Journal articles: 'Titanium sheet'

1

Harada, Yasunori, Hiroto Ono, and Yuki Nishikubo. "Deep Drawability of Ti/Steel/Ti Laminated Sheets." Materials Science Forum 920 (April 2018): 64–69. http://dx.doi.org/10.4028/www.scientific.net/msf.920.64.

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Cladding is the bonding together of dissimilar metals. One of clad products is the titanium clad steel sheet. It is effective to cover with pure titanium sheet to improve the corrosion resistance of the steel sheet. Titanium clad steel sheets are often achieved by rolling sheets together under high pressure. In the current study, the blank comprising three laminar non-bonded sheets, such as the titanium/steel/titanium sheet, is arranged in the die. The formability of pure titanium clad sheet by multistage deep drawing was investigated to enhance corrosion resistance of steel cup. In the experiment, the blanks were pure titanium sheets JIS1-TP270, JIS2-TP340, ultralow-carbon steel SPCC, and stainless steel SUS316L. The initial thickness of the sheet was 0.2 to 0.5 mm in thickness. The blank diameter was 70 mm. The blanks are merely adjacent sheet; however, not joined with each other. In the deep drawing process, a hydraulic press was used in the experiment and the forming speed for the press was about 10 mm/min. The lubricant used was the solid powders of molybdenum disulfide. For the prevention, pure titanium blank was treated by oxide coating. The conditions of heat treatment were annealed at 973 K for 3.6 ks to 7.2 ks. By oxide coating, the titanium sheet has sufficient ability in preventing the seizure in multistage deep drawing. The drawn cups of the three-layer laminated sheet were formed. The seizure did not cause. The oxidatively-treated titanium sheets have sufficient ability in preventing the seizure. In addition, the clad cups until 6th stage were formed by multistage deep drawing. Long clad cups were successfully formed in multistage deep drawing process.

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Lacki, Piotr, and Konrad Adamus. "Numerical Simulation of Welding Thin Titanium Sheets." Key Engineering Materials 549 (April 2013): 407–14. http://dx.doi.org/10.4028/www.scientific.net/kem.549.407.

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Different titanium grades are used in aircraft construction because of titaniums unique properties. These materials are mostly joined by different welding methods. Electron beam welding technology is often used in the aircraft industry to join structural elements made of titanium alloys. The goal of the work is a numerical analysis of the electron beam welding process applied to joining thin titanium sheets. The analysis was performed using finite element method, FEM. Temperature distribution, size of heat affected zone (HAZ), depth and width of fusion zone were determined for the assumed heat source model. Thermo-mechanical (TMC) simulation of the electron beam welding process using FEM is presented in the paper. The joining of two sheets, one made of commercially pure titanium Grade 2 and the other made of titanium alloy Grade 5 (Ti6Al4V), is analysed in the work. For the sheet welding process distributions of temperature, effective stress, and sheet deformation were calculated.

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Harada, Yasunori, and Minoru Ueyama. "Multi-Stage Cold Deep Drawing of Pure Titanium Square Cup." Key Engineering Materials 651-653 (July 2015): 1072–77. http://dx.doi.org/10.4028/www.scientific.net/kem.651-653.1072.

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This paper deals with the formability of pure titanium sheet in square cup deep drawing. Pure titanium has very excellent corrosion resistance. In the metal forming process, pure titanium has very good ductility in cold forming. The normal anisotropy of pure titanium is very high. Therefore, the property is suitable to the sheet metal forming, such as deep drawing process. However, the most important problem is that the occurrence of seizure becomes remarkable in severe forming operations. Many investigations on the effect of processing conditions on the seizure of titanium were carried out. In the present study, the formability of pure titanium sheet in square cup deep drawing was investigated. For the prevention, pure titanium sheets were treated by heat oxide coating. The fresh and clean titanium is not in direct contact with the die during the forming due to the existence of the oxide layer. The material was pure titanium sheets of the JIS grade 2. The initial thickness of the blank was 0.5 mm in thickness. In the deep drawing process, the sheets were employed and a flat sheet blank is formed into a square by a punch. Forming of sheet by multi-stage deep drawing was tried. Various cups were drawn by exchanging the punch and die. The die was taper without a blankholder in the subsequent stages. The effects of the intermediate annealing and tool shape on the occurrence of seizure in square cup deep drawing were also examined. The square cups were successfully drawn by heat oxide coating. The coating of titanium sheet has sufficient ability in preventing the seizure in multi-stage deep drawing operation. The results of the present study revealed that the pure titanium square cups were successfully formed by using heat oxide coating treatment.

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Xie, Yi Bing, Li Min Zhou, Chuan Jun Huang, Yang Liu, and Jian Lu. "Preparation and Electrochemical Capacitance of Ruthenium Oxide-Titania Nanotube Composite." Materials Science Forum 614 (March 2009): 235–41. http://dx.doi.org/10.4028/www.scientific.net/msf.614.235.

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A well-aligned titania nanotube array grown on titanium sheet was fabricated by an anodization process in hydrofluoric acid-phosphoric acid-ethylene glycol aqueous electrolyte. Electroactive ruthenium oxide was filled into independent titania nanotubes or deposited on the surface of planar titanium sheet by an electrodeposition-oxidation process. Electrochemical capacitances of these well-designed ruthenium oxides were investigated for supercapacitor applications. Accordingly, ruthenium oxide-titania/titanium (RuO2-TiO2/Ti) nanocomposite exhibits a much higher specific capacitance, power and energy density than ruthenium oxide/titanium (RuO2/Ti) in sulphate acid electrolyte. The utilization efficiency of RuO2 is intensively improved by introducing a novel electrode substrate with a nanotube array structure. Such a superior performance of RuO2-TiO2/Ti nanocomposite is ascribed to its highly accessible reaction sites of well-tailored RuO2 on TiO2 nanotubes.

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Malysheva, Svetlana, G. A. Salishchev, Sergey Mironov, and Sergey V. Zherebtsov. "Production of Nanostructure in Titanium by Cold Rolling." Materials Science Forum 584-586 (June 2008): 759–64. http://dx.doi.org/10.4028/www.scientific.net/msf.584-586.759.

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The paper considers changes in microstructure, texture and mechanical properties of commercial titanium with initial coarse-grained structure during cold sheet rolling. It has been shown that rolling above 75% leads to formation of a uniform nanocrystalline (NC) structure with a grain size of approximately 0.2 'm in the sheet material. The sheets have a high level of mechanical properties which is comparable with the properties of bulk specimens of titanium with NC structure produced by some other method of severe plastic deformation.

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Harada, Yasunori, Kenzo Fukaura, and Kenichiro Mori. "Formability of Beta Titanium Alloy in Multi-Stage Deep Drawing Process." Key Engineering Materials 345-346 (August 2007): 121–24. http://dx.doi.org/10.4028/www.scientific.net/kem.345-346.121.

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In the multi-stage deep drawing processes of a beta titanium alloy sheet, the formability has been investigated. The beta titanium alloy sheets have sufficient ductility at room temperature, whereas a seizure tends to occur during deep drawing due to high reactivity with other materials. To prevent the seizure, the beta titanium alloy sheet was treated by oxide coating heating, because the coated sheet was not in direct contact with the die during deep drawing due to the existence of the oxide layer. The blank used was the commercial beta titanium alloy Ti-15V-3Cr-3Sn-3Al. The effect of the coating condition on the formability in the multi-stage deep drawing process was examined. It was found that long drawn cups with a height sixfold that of the diameter were successfully formed by oxide coating heating.

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7

Park, Jin Gee, Nho Kwang Park, and Young Suk Kim. "Plastic Deformation Characteristics and Evaluation of Press Formability for Ti-6Al-4V Sheet at Warm Temperature." Materials Science Forum 654-656 (June 2010): 875–78. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.875.

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Titanium alloy sheets have excellent specific strength and corrosion resistance as well as good performance at high temperature. Recently, titanium alloys are widely employed not only aerospace parts but also prosthetics and motorcycle. However, titanium and its alloys are difficult-to-form materials due to limited slip system and plastic anisotropy. Titanium alloy sheets were usually formed by slow forming or hot forming with heating die and specimen. In the sheet metal forming area, FE simulation technique to optimize forming process is widely used. To achieve high accuracy FE simulation results, identification of material properties and deformation characteristics such ad yield behaviors are very important. In this study, the yield locus of Ti-6Al-4V sheet was obtained at warm temperature. The experimental results are compared with the theoretical predictions. Also, the Forming Limit Curves (FLC) was achieved at warm temperature.

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8

Yan, Weijun, and Ping Shao. "Study on the Performance of Titanium Materials Based on Nano Silver Particles in Orthodontic Healing." Journal of Nanoscience and Nanotechnology 21, no. 2 (February 1, 2021): 1135–41. http://dx.doi.org/10.1166/jnn.2021.18686.

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Nanomaterials are used as a new type of antibacterial agent in clinical medical research projects due to their unique physical and chemical properties. In this study, silane coupling method was used to coat nano-silver particles on titanium sheets to make the smooth titanium surface have antibacterial properties. Scanning electron microscope to observe the surface morphology of silane coupling modified titanium plate, the shape and size of nano-silver particles, and the adhesion on titanium plate; X-ray energy spectroscopy and line scan analysis of each element on the titanium wafer; X-ray photoelectron spectroscopy quantitative analysis of surface elements on the titanium wafer. The experimental group was nano-silver modified titanium sheet, and the control group was smooth titanium sheet. The experimental results show that the titanium material loaded with nano-silver particles has better antibacterial performance in the orthodontic process than ordinary materials. This material is highly safe and can be promoted for use.

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9

Zhang, Yue, Xiao Cong He, and Fu Long Liu. "Study on the Property of Clinched Joint in Similar-Dissimilar Sheets about Titanium Alloy." Applied Mechanics and Materials 723 (January 2015): 888–91. http://dx.doi.org/10.4028/www.scientific.net/amm.723.888.

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In order to analysis the mechanical properties of clinched joints of titanium alloy, three types of the clinched joints in similar and dissimilar sheets called , TA1-TA1,TA1-H62 and Al5052-TA1 were respectively studied through the method of experiment. Tensile shear tests were carried out to examine the mechanical behavior of them, the failure modes also been analysised. It can be seen in the experiment that the failure mode of the three kinds of joints were fracture of upper sheet at the neck with the minimum thickness. Comparison shows that improve the plasticity of the lower sheet can improve the quality of joint when the upper sheet was titanium alloy sheet.

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10

HARADA, Yasunori, Shuji HATTORI, and Hiroto ONO. "Deep Drawability of Titanium/Mesh/Titanium Laminated Sheet." Proceedings of Conference of Kansai Branch 2017.92 (2017): 502. http://dx.doi.org/10.1299/jsmekansai.2017.92.502.

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11

Formisano, Antonio, Luca Boccarusso, Luigi Carrino, Massimo Durante, Antonio Langella, Fabrizio Memola Capece Minutolo, and Antonino Squillace. "Formability and Surface Quality of Incrementally Formed Grade 1 Titanium Thin Sheets." Key Engineering Materials 716 (October 2016): 99–106. http://dx.doi.org/10.4028/www.scientific.net/kem.716.99.

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The incremental forming of titanium alloy sheets combines the advantages of this advanced flexible manufacturing process, that allows to produce complex components without using dedicated tools, with the interesting properties of the material under consideration. In this study, thin sheets of grade 1 titanium were incrementally formed to evaluate their formability and surface quality by varying the tool-sheet contact conditions. Experimental tests and surface analyses highlight dependence on the contact conditions of the surface quality rather than of the formability. Moreover, they emphasize that the tool-sheet contact conditions mainly affect the repeatability of the process due to the occurrence of galling.

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12

ANZAI, Masahiro, Hiroshi ENDO, Toru SUDO, and Takeo NAKAGAWA. "Magnetic Finishing of Titanium Sheet." Tetsu-to-Hagane 78, no. 2 (1992): 335–37. http://dx.doi.org/10.2355/tetsutohagane1955.78.2_335.

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13

He, Xiao Cong, and De Suo Zhao. "Mechanical Clinching of Titanium and Aluminum-Lithium Sheet Materials." Key Engineering Materials 744 (July 2017): 228–32. http://dx.doi.org/10.4028/www.scientific.net/kem.744.228.

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This paper deals with the join-ability of extensible die mechanical clinching in titanium and aluminium-lithium sheet materials. Latest developments in extensible die mechanical clinching processes for sheet materials are reviewed. Clinching process tests were carried out for the dissimilar alloy sheets combinations. To increase the join-ability, TA1 sheets were heated to 700 °C by an oxyacetylene flame gun. The temperature was controlled by an infrared thermometer. Tensile-shear tests were carried out to characterize the mechanical properties of the clinched joints. The quality assessment and failure mode of clinched joints were studied. Results showed that clinched joints of titanium and aluminium-lithium have very good join-ability and load-bearing capacity. It can be inferred from the energy absorption analyse results that the clinch joints failed with neck fracture mode can absorb more energy than that of the clinch joints failed with button separation mode.

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14

Inoue, Hirofumi, Masaaki Ishio, and Takayuki Takasugi. "Texture, Tensile Properties and Press Formability of Mg-3Al-1Zn/Ti Clad Sheets Produced by Roll-Bonding." Materials Science Forum 495-497 (September 2005): 645–50. http://dx.doi.org/10.4028/www.scientific.net/msf.495-497.645.

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In order to improve corrosion resistance and mechanical properties of magnesium alloys, titanium with high specific strength was warm roll-bonded on the surface of AZ31 magnesium alloy sheets. Although the AZ31 alloy before roll-bonding had a typical basal texture, the AZ31 layer that constitutes a larger part of the clad sheet clearly showed off-basal texture with c-axis inclined by about 10º from the normal direction toward the rolling direction. This texture significantly affected tensile properties of clad sheets, resulting in lower proof stress and higher elongation at the rolling direction than at the transverse direction. In deep drawing tests, the 2-layered clad sheet with an outer titanium layer could be successfully formed at temperatures considerably lower than the limiting forming temperature of an original AZ31 single sheet. This is probably due to an effect of the outer titanium layer bearing tensile stress at a shoulder part of cup and an additional effect of improved deformability by off-basal texture in the AZ31 layer.

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15

Wood, Paul, Muhammad Jawad Qarni, Paul L. Blackwell, Vladimir Cerny, Phillip Brennand, Steven Wilkinson, and Andrzej Rosochowski. "Modeling the Super Plastic Forming of a Multi-Sheet Diffusion Bonded Titanium Alloy Demonstrator Fan Blade." Materials Science Forum 735 (December 2012): 215–23. http://dx.doi.org/10.4028/www.scientific.net/msf.735.215.

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The paper describes a finite element method in 2D and 3D to simulate the super plastic forming of a demonstrator jet engine fan blade made from Titanium alloy sheet. The fan blade is an assembly of three sheets in which a single inner (core) sheet is diffusion bonded to the two outer (skin) sheets at prescribed zones, which is then super-plastically formed to a desired fan profile. In the model, the diffusion bonded zones between the core and skin sheets are simulated using tied interfaces. The thickness of each skin sheet is not uniform and significant change in thickness can occur over a short distance as well as gradually over the entire skin sheet. The thickness of the core sheet which is smaller than the thickness of each skin sheet remains uniform. The paper describes the design for a scaled-down demonstrator fan blade and model build process. Selected results and evaluations of finite element simulations are presented and discussed.

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16

Lacki, P., J. Adamus, W. Wieckowski, and J. Winowiecka. "Evaluation of Drawability of Titanium Welded Sheets / Ocena Tłocznosci Spawanych Blach Tytanowych." Archives of Metallurgy and Materials 58, no. 1 (March 1, 2013): 139–43. http://dx.doi.org/10.2478/v10172-012-0164-7.

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In the paper experimental and numerical results of sheet-metal forming of titanium welded blanks are presented. Commercially pure titanium Grade 2 (Gr 2) and Ti6Al4V titanium alloy (Gr 5) are tested. Forming the spherical cups from the welded Gr 2 || Gr 5 blanks, and uniform Gr 2 and Gr 5 blanks is analysed. Numerical simulations were performed using the PamStamp 2G v2012 program based on the finite element method (FEM). Additionally, drawability tests using the tool consisting of die, hemispherical punch and blank-holder were carried out. Thickness changes and plastic strain distributions in the deformed material are analysed. The obtained results show some difficulties occurring during forming of the welded blanks made of titanium sheets at the same thicknesses but at different grades. It provide important information about the process course and might be useful in design and optimization of the sheet-titanium forming process.

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17

lee, Hyunseok, and Miseon Choi. "Study on edge cracking of titanium cold rolled sheet." MATEC Web of Conferences 321 (2020): 11017. http://dx.doi.org/10.1051/matecconf/202032111017.

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In this study, to understand oxygen effects on workability of titanium, edge cracking and microstructure changes with the oxygen content variations in the cold rolled sheets were observed carefully and discussed. The higher oxygen content of titanium sheet, the more the edge cracks occurred after cold rolling deformation. While the specimen containing low oxygen became fine grained structures after the cold rolling, the other high oxygen sheets consisted of relatively coarse and elongated grains. The fine-grained structures was assumed to come from an active twinning behavior, meanwhile the other’s elongated structures were due to the twinning suppression by increasing oxygen contents. In addition, distinct shear bands were appeared in the high oxygen sheets after cold rolling. The high oxygen contents may multiply dislocation density by suppression of twinning and promoting dislocation slips. The increased dislocations can also produce a concentration of strain, slip bands thus appears during the cold rolling deformation. These slip bands cause the edge cracking in the higher oxygen sheets.

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18

Krivtsun, I. V., V. Yu Khaskin, V. M. Korzhyk, I. M. Klochkov, V. V. Kvasnytskyi, O. A. Babich, Cai Detao, Luo Ziyi, and Han Shanguo. "Hybrid laser-microplasma welding of sheet Ti–Al–V Titanium alloy." Paton Welding Journal 2019, no. 10 (October 28, 2019): 12–16. http://dx.doi.org/10.15407/tpwj2019.10.01.

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19

Lee, Ho Sung, Jong Hoon Yoon, and Yeong Moo Yi. "Blow Forming of Lightweight Titanium Components." Materials Science Forum 658 (July 2010): 336–39. http://dx.doi.org/10.4028/www.scientific.net/msf.658.336.

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The objective of this study is to fabricate lightweight structural panels and pressurized tanks by blow forming of solid-state bonded Ti-6Al-4V sheets. The solid-state bonding process was conducted in selective areas of the sheets and gas pressure was applied to the core sheet in order to form center cells. The microstructure of bonded region shows no indication of any discontinuous or heterogeneous microstructure at interface. It is shown that the blow forming of a lightweight sandwich structural panel and a sphere vessel was successfully performed with solid-state bonded multiple sheets of titanium alloy. The result of configuration and thickness distribution measurement indicate that the FEM analysis can predict the forming behavior during blow forming process of solid-state bonded sheets.

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20

Le, Khanh Dien, Tan Hung Nguyen, Ngoc Huy Tran, Thanh Son Le, Huy Bich Nguyen, and Thanh Nam Nguyen. "A Research of the Precision of Titanium Sheet Formed by Hot Incremental Sheet Forming Method." Key Engineering Materials 749 (August 2017): 154–60. http://dx.doi.org/10.4028/www.scientific.net/kem.749.154.

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Single Point Incremental Forming (SPIF) is a recent technology of forming sheet in several decades. Nowadays, SPIF technology is still continued to be studied, applied and ameliorated in sheet manufacturing in industry. However one of the difficulties of the technology is the forming angle is still small (smaller than 800 according the properties of metal sheets). This paper recommends a measure of increasing the plasticity of the sheet by heating in time of forming by SPIF technology. Naturally, the plasticity of metal sheet increases by the temperature of the material in forming process with its limitation and constraint. The paper represents the effect of heating metal sheet through the empirical process of SPIF technology directed by the design of experiment (DOE). The analyses of the results of experimental process is applied to show the effect of heating to the precision of Titanium sheet. Finally, some private opinions about the heating in SPIF are also mentioned as a very tiny contribution of the research for the new technology.

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21

Shipton, M. H., and W. T. Roberts. "Hot deep drawing of titanium sheet." Materials Science and Technology 7, no. 6 (June 1991): 537–40. http://dx.doi.org/10.1179/mst.1991.7.6.537.

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22

Chinapareddygari, Teena Mouni, Chandrasekaran Ravishankar, Karthikeyan Thangaraj, Shaju K. Albert, Utpal Borah, Anil Kumar Vesangi, and Rohit Kumar Gupta. "Stretchability of Commercial Purity Titanium Sheet." Metallurgical and Materials Transactions A 50, no. 12 (September 18, 2019): 5602–13. http://dx.doi.org/10.1007/s11661-019-05417-4.

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23

Bai, Hui Ping, Zhong Hua Zheng, Yuan Qiang Tu, and Jie Cai. "Corrosion Performance of Common Pressed Prepainted Steel Sheet." Applied Mechanics and Materials 193-194 (August 2012): 458–61. http://dx.doi.org/10.4028/www.scientific.net/amm.193-194.458.

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The corrosion behavior of common pressed prepainted steel sheets with trade mark TDC51D+Z was studied by neutral salt spray and electrochemical impedance spectroscopy (EIS). The effect of organic polymers on the corrosion performance of prepainted steel sheet was analyzed with glow discharge optical emission spectrometry (GDS). The results showed that the distributing depth of titanium pigment determined the corrosion performance of prepainted steel sheets with white finishing coat.

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24

Adamus, J., and P. Lacki. "Investigation of Sheet-Titanium Forming with Flexible Tool – Experiment and Simulation / Badanie Kształtowania Blach Tytanowych Z Wykorzystaniem Elastycznego Narzędzia - Doświadczenie I Symulacja." Archives of Metallurgy and Materials 57, no. 4 (December 1, 2012): 1247–52. http://dx.doi.org/10.2478/v10172-012-0139-8.

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In the paper the results of investigation of sheet-titanium forming with flexible tool are presented. Titanium alloy sheets belong to a group of materials which are very hard to deform at ambient temperature. To improve sheet formability forming technology using a semi-flexible tool was implemented. Experiments were carried out on a specially designed for this purpose device. Due to the application of a rubber pad the stress state similar to triaxial compression was produced in the deformed material. Such a stress state made it possible to obtain higher material deformation without risk of fracture. The numerical simulations were used for analysing the flexible forming process. The ADINA System basing on the Finite Element Method (FEM) was applied.

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Zhang, Yong Chun, Xiu Feng Wang, Xi Bing Wang, and Jiang Guo. "Laser Prestressed Bending of Titanium Alloy Sheet." Applied Mechanics and Materials 633-634 (September 2014): 773–76. http://dx.doi.org/10.4028/www.scientific.net/amm.633-634.773.

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The new method of laser prestressed bending of Titanium alloy sheet is put forward in this paper. Titanium alloy sheet is produced pre-deformation by a clamp, the laser beam with some certain intensity scans its surface along the given path, and it is formed due to the thermal effect of the laser to reduce the yield strength of the scanning area and enhance its plastic deformation ability. A feasibility experiment for Ti-6Al-4V sheet is done and the bending effect is remarkable. Laser prestressed bending mechanism is described and the main influence factors are analyzed.

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Göttmann, A., J. Diettrich, G. Bergweiler, M. Bambach, G. Hirt, P. Loosen, and R. Poprawe. "Laser-assisted asymmetric incremental sheet forming of titanium sheet metal parts." Production Engineering 5, no. 3 (February 18, 2011): 263–71. http://dx.doi.org/10.1007/s11740-011-0299-9.

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Harada, Yasunori, Toshiyuki Araki, and Takahiro Tsuda. "Formability of Pure Titanium Long-Cup by Multi-Stage Deep Drawing." Materials Science Forum 654-656 (June 2010): 1307–10. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.1307.

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The pure titanium long-cups were formed by preventing the seizing in cold multi-stage deep drawing processes. For the prevention, pure titanium sheets were treated by heating oxide coating. The coating is very effective in preventing the occurrence of seizure and galling. The fresh and clean titanium is not in direct contact with the die during the forming due to the existence of the oxide layer. In multi-stage deep drawing, pure titanium sheets of the JIS grade 2 was employed. Various cups were drawn by exchanging the punch and ringed die. The die was flat in the first stage, and was taped without a blankholder in the subsequent stages. The effects of the coating conditions on the occurrence of seizure in multi-stage deep drawing were examined. It was found that the coating titanium sheet has sufficient ability in preventing the seizure in multi-stage deep drawing processes. The pure titanium long-cups were successfully formed by a multi-stage deep drawing operation in cold.

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Aydogan, Cahit Sertac, Hasan Ali Hatipoglu, and Omer Keles. "Springback prediction of CP2 titanium sheets in hydroforming with membrane diaphragm process with finite element method." MATEC Web of Conferences 190 (2018): 09002. http://dx.doi.org/10.1051/matecconf/201819009002.

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This study aims to predict and to examine the springback of CP2 Titanium sheets in hydroforming with membrane diaphragm process, which is the branch of hydroforming process. The Hydroforming with Membrane Diaphragm was used for experimental investigation, in which specified CP2 titanium sheets were bent with various radii and angles on a specifically designed die. Springback results were then used to validate the finite element model constructed previously. Results show that the numerical model of this study can be used to predict the approximate springback values. Thus, the scrap quantities of the sheet metal titanium products can be reduced by making some modifications on the die, such as the springback compensation based on the obtained approximate springback values.

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Shen, Hong, Yu Feng Deng, and Jian Hao. "Finite Element Analysis of the Process of Drilling Medical Titanium Sheet." Advanced Materials Research 532-533 (June 2012): 272–76. http://dx.doi.org/10.4028/www.scientific.net/amr.532-533.272.

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This article showed that the research of the process of drilling medical titanium sheet. Internal stress, strain and temperature distribution could not be seen, so based on Finite element analysis software, establishing finite element model of the process of drilling. On the basis of the inspection and studying existing drilling technology, three options were proposed .In view of stress, strain, temperature, and axial force, analyze the process of drilling titanium sheet. The results showed that penetration rate in 1000r/min and feed in 0.04mm/r, twist drill drilling medical titanium sheet is more reasonable.

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Usov, V. V., N. M. Shkatulyak, O. S. Savchuk, and N. I. Rybak. "Kearns texture parameters, mechanical properties and damageability of titanium sheet after alternating bending." Physics and Chemistry of Solid State 22, no. 3 (September 7, 2021): 543–50. http://dx.doi.org/10.15330/pcss.22.3.543-550.

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This work aims to determine the Kearns texture parameters and evaluate on their basis the elastic moduli, mechanical properties (ultimate tensile strength, conditional yield stress), as well as damageability parameters of the sheets commercial titanium (CT-grade 1: 0.04% Fe; 0.015% C; 0.05% N 0.05% c; 0.009% H) as delivered after rolling and annealing at 840°C (original sheet) and further alternating bending (AB) in the amount of 0.5; 1, 3 and 5 cycles. Damageability parameters characterizing damage accumulation were determined from the elastic modulus change after the above-mentioned number of AB cycles relative to the values of the elastic modulus in different directions of the original sheet of the studied titanium. The elastic constants of the single crystal and the Kearns texture parameters were used to estimate the elastic modulus in the rolling direction (RD) and transverse direction (TD) of the original sheet, and sheets after an above number of AB cycles. The deviation of the calculated and experimental values of the elastic modulus did not exceed 5%. The deviation of the calculated and experimental values of the ultimate tensile strength and yield stress in the RD and TD both in the initial state and after the corresponding number cycles of the AB did not exceed 10%.

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Takayama, Yoshimasa, Mei Qin Shi, Yoshihiro Ougiya, Kenta Nonaka, and Hideo Watanabe. "Texture Evolution in Titanium and Aluminum Sheets Subjected to Friction Roll Surface Processing and Subsequent Annealing." Materials Science Forum 702-703 (December 2011): 457–60. http://dx.doi.org/10.4028/www.scientific.net/msf.702-703.457.

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Titanium and aluminum sheets were directionally strained by friction roll surface processing (FRSP). Severe shear strain was imposed into the surface layer and strain gradient was formed through the thickness of the sheet. The microstructure and texture in as-strained state were investigated by optical microscopy and X-ray diffraction technique. Ultra-fine grains in the surface layer of the titanium sheet were found to have a sharp texture with a preferred orientation strongly related to the FRSP direction. The evolution of microstructure and crystallographic texture of FRSPed samples during annealing were studied by electron back-scattered diffraction (EBSD) technique. Obvious preferred orientations of shear straining were obtained in the surface layer of both materials as a result from FRSP and subsequent annealing.

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Gershon, B., and I. Eldror. "Research and Application of Superplastic Forming Titanium Alloys for Commercial Aircraft Parts." Materials Science Forum 475-479 (January 2005): 3047–50. http://dx.doi.org/10.4028/www.scientific.net/msf.475-479.3047.

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Titanium alloys sheets have many attractions for the aerospace industry owing to their high strength, low density, heat resistance and other useful properties. Many of the sheet metal structures in airframes have complex shapes and compound curvatures with intricate details. Superplastic forming (SPF), a most recent advancement in titanium sheet forming technology, exploits the excellent characteristic of >1000% elongation potential for the fabrication of complex configurations not achievable by conventional methods. SPF technology can also reduce manufacturing cost by shortening the preparation time, eliminating the need for extensive welding or other joining methods and by reducing the number of manufacturing steps. Consequently, high profit margins may be achieved in serial aircraft production. This paper outlines the research at Israel Aircraft Industries (IAI) of SPF technology and its application in producing complex-shape Ti sheet parts for the new IAI commercial aircrafts, models “G-150” and “G-200”. Examples of both actual and experimental parts are given, together with details of the manufacturing parameters employed. An economical analysis is also included.

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Kikuchi, Yusuke, Koji Kakehi, Koichi Kitazono, Eiichi Sato, and Kazuhiko Kuribayashi. "Magnesium Foam Produced from Bulk AZ31 Magnesium Alloy Sheets." Materials Science Forum 475-479 (January 2005): 501–4. http://dx.doi.org/10.4028/www.scientific.net/msf.475-479.501.

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Using commercial AZ31 magnesium alloy sheets, we produced a foamable preform sheet containing titanium hydride (TiH2) powder through diffusion-bonding and hot-rolling of four cycles. Heating the preform sheets in Ar atmosphere, we obtained closed-cell magnesium alloy foams with various porosities. The foamed specimen at 883 K showed the maximum porosities of 77%.

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Pham, Quoc Tuan, and Young Suk Kim. "Evaluation of Press Formability of Pure Titanium Sheets." Key Engineering Materials 716 (October 2016): 87–98. http://dx.doi.org/10.4028/www.scientific.net/kem.716.87.

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Commercially pure titanium (CP Ti) has been actively used in plate heat exchangers due to its light weight, high specific strength, and excellent corrosion resistance. However compared with automotive steels and aluminum alloys, only limited research has been conducted on the plastic deformation characteristics and press formability of CP Ti sheets. In this study, the mechanical properties, including the anisotropic property and the stress-strain relation, of the CP Ti sheet are clarified in relation to press formability. A new proposed strain hardening model, Kim-Tuan equation, is successful in perfectly describing the stress evaluation for strain increment of this material during strain path. The forming limit curve (FLC) of the CP Ti sheet as a criterion for press formability was experimentally evaluated by punch stretching testing and analytically predicted via Hora’s modified maximum force criterion. The predicted FLC based on the Kim-Tuan strain hardening equation and the appropriate yield function correlates well with the experimental results of the punch stretching test.

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HATTORI, Shuji. "Formability of Titanium/Steel/Titanium Laminated Sheet by Multistage Deep Drawing." Journal of the Japan Society for Technology of Plasticity 58, no. 683 (2017): 1115–16. http://dx.doi.org/10.9773/sosei.58.1115.

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Harhash, M., A. Carradò, and H. Palkowski. "Lightweight titanium/polymer/titanium sandwich sheet for technical and biomedical application." Materialwissenschaft und Werkstofftechnik 45, no. 12 (December 2014): 1084–91. http://dx.doi.org/10.1002/mawe.201400356.

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Nunobiki, Masayuki, Koichi Okuda, Kousuke Hourai, and Hiroo Shizuka. "Bending of Pure Titanium Sheet to Curved Surface Shape by Laser Forming Technique." Advanced Materials Research 126-128 (August 2010): 388–93. http://dx.doi.org/10.4028/www.scientific.net/amr.126-128.388.

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This paper deals with laser forming procedure to bend pure titanium sheets along arbitrary curved shape. In preliminary experiments, single straight-line bending was carried out and the relationship between bending angle and laser irradiation conditions was investigated. It was clarified that the bending angle was able to control with scanning velocity and the number of scanning passes. With use of obtained experimental formula for the bending angle, we tried to bend the Ti sheet along given parabola shape with a multi straight-line bending. The experimental result was corresponding to the target shape well. This paper proposed a laser forming procedure for curved shapes which include both convex curve and concave curves. It was confirmed that it was able to curve a titanium sheet along arbitrary curved surface with proposed method.

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OGAYA, Masayoshi, Masaru KISAICHI, and Seishi ISHIYAMA. "Stretchability of Commercially Pure Titanium Thin Sheet." Tetsu-to-Hagane 72, no. 6 (1986): 649–56. http://dx.doi.org/10.2355/tetsutohagane1955.72.6_649.

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Kruglov, A. A., and O. A. Rudenko. "Formability of VT6 titanium alloy nanostructured sheet." Letters on Materials 2, no. 2 (2012): 107–10. http://dx.doi.org/10.22226/2410-3535-2012-2-107-110.

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Li, Zhang, S. L. Gobbi, I. Norris, S. Zolotovsky, and K. H. Richter. "Laser welding techniques for titanium alloy sheet." Journal of Materials Processing Technology 65, no. 1-3 (March 1997): 203–8. http://dx.doi.org/10.1016/s0924-0136(96)02263-7.

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Walczyk, Daniel F., and Sameer Vittal. "Bending of Titanium Sheet Using Laser Forming." Journal of Manufacturing Processes 2, no. 4 (January 2000): 258–69. http://dx.doi.org/10.1016/s1526-6125(00)70027-2.

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HARADA, Yasunori, Yuki NISHIKUBO, Mami UEDA, and Ippei TANAKA. "Deep drawability of titanium alloy laminated sheet." Proceedings of Mechanical Engineering Congress, Japan 2019 (2019): J04201. http://dx.doi.org/10.1299/jsmemecj.2019.j04201.

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Ross, Keith A., and Peter Thimm. "Sheet resistance nonuniformity for ionized titanium deposition." Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures 18, no. 4 (2000): 2024. http://dx.doi.org/10.1116/1.1306277.

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Kishimoto, Akihiro, Yuuki Yamada, Kohei Funatsu, and Tetsuya Uda. "Suitable Electrode Materials for Titanium Sheet Deposition." Advanced Engineering Materials 22, no. 2 (December 5, 2019): 1900747. http://dx.doi.org/10.1002/adem.201900747.

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Bernhart, Gerard, Jean Paul Arcens, and Yannick Le Maoult. "Innovative Superplastic Forming Based on In Situ Infra-Red Sheet Heating." Materials Science Forum 735 (December 2012): 415–21. http://dx.doi.org/10.4028/www.scientific.net/msf.735.415.

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This paper describes the research work that was performed in order to propose an innovative and low cost process route for superplastic forming of aluminum and titanium alloy sheets. The driving idea was to heat only the metallic sheet using heating elements included in the pressure chamber. Several heating configuration have been tested and equipment designs investigated. Based on experimental results and numerical thermal analysis, it was found that halogen heating lamps with a high reflective thermal insulation was the best for the upper pressure chamber, whereas low effusivity Refractory Castables materials seem optimal as low cost forming die. Energy consumption evaluation shows more than 80% energy saving in nominal titanium alloy forming. A pilot forming equipment was developed and first aluminum sheet forming trials give interesting results.

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Geng, Lin, H. L. Wang, Y. B. Song, and Jie Zhang. "The Fabrication of Titanium Aluminide Matrix Composite Sheet by Rolling and Reaction Annealing." Materials Science Forum 654-656 (June 2010): 404–7. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.404.

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In this work, Ti5Si3 and TiC particle reinforced titanium aluminide matrix composite sheet was fabricated by rolling and reaction annealing using the starting materials of SiCp/Al composite and pure titanium sheet. The deformation compatibility of both starting materials and microstructure evolution during reaction synthesis were studied. The results show that titanium has the similar deformability with SiCp/Al composite via the introduction of SiC particles and the selection of proper rolling temperature. Titanium aluminide matrix composite reinforced by Ti5Si3 and TiC was synthesized by reactions during the annealing. The reactions include the formation of titanium aluminide matrix by the diffusion synthesis between titanium and aluminum, as well as reinforcements (Ti5Si3 and TiC) by in-situ reaction between SiC and titanium.

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Adamus, Janina, and Maciej Motyka. "Analysis of Tensile Test of Titanium EBW Sheet." Key Engineering Materials 639 (March 2015): 339–46. http://dx.doi.org/10.4028/www.scientific.net/kem.639.339.

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The continuous pursuit of vehicle weight reduction forces the industry to look for alternative materials to steel. Light alloys such as aluminium or titanium are materials that provide a decrease in weight using conventional technologies. Additional weight reduction results from using tailor-welded blanks (TWB). While the joining and forming steel or even aluminium TWBs is quite well known and described in the technical literature, joining and forming titanium TWBs still poses a significant problem. In the paper, experimental tests carried out with welded samples manufactured from commercially pure titanium Gr 2 and titanium alloy Gr 5 sheets are presented. The samples were joined by electron beam welding. Mechanical testing and optical microscopy were used to characterise the welds and the base metal of the samples. The samples were subjected to uniaxial tension up to final failure. The 3‑D Digital Image Correlation system ARAMIS was used for monitoring the whole deformation process. This makes it possible for real-time observation of sample deformation. The test results and the numerical analysis of the tensile tests are compared. The numerical simulations were carried out with the ADINA System based on the Finite Element Method (FEM). The mechanical analysis leads to calculation of the strain state after sample deformation in uniaxial tension (mechanical model).

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Sato, Hideki, Kenichi Manabe, Dong Bin Wei, Zheng Yi Jiang, and Daiki Kondo. "Micro Sheet Hydroforming Process of Ultra-Thin Pure Titanium Foil." Key Engineering Materials 626 (August 2014): 397–401. http://dx.doi.org/10.4028/www.scientific.net/kem.626.397.

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A micro hydromechanical deep drawing is carried out using the pure titanium and the effect of fluid pressure on formability of pure titanium is investigated. The experiments are performed using the two kinds of pure titanium foils (TR270C-H and TR270C-O) and stainless steel foil (SUS304-H) with 50 thickness and the cylindrical and conical punches. As a result, it is found that the peeling off the oxide film of pure titanium can be reduced by applying the fluid pressure because the friction force and contact pressure between the blank and die decreases. However, the formability is lower for pure titanium than that for stainless steel because the tensile strength is low and the friction force is easy to increase as the friction force increases. In contrast, due to the low young modulus of pure titanium, the restriction of wrinkling, decrease of friction force and friction holding effect can be obtained at low fluid pressure.

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NISHIO, Kazumasa, Mitsuaki KATOH, Tomiko YAMAGUCHI, Tatsuya TOKUNAGA, and Atsuo MATSUMOTO. "Lap Welding of Titanium Sheet and Mild Steel Sheet by Seam Welding." QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 21, no. 4 (2003): 553–59. http://dx.doi.org/10.2207/qjjws.21.553.

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Maeno, Tomoyoshi, Yuya Yamashita, and Ken-Ichiro Mori. "Hot Stamping of Titanium Alloy Sheets into U Shape with Concave Bottom and Joggle Using Resistance Heating." Key Engineering Materials 716 (October 2016): 915–22. http://dx.doi.org/10.4028/www.scientific.net/kem.716.915.

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The hot stamping of α+β titanium alloy sheet into U shape with concave bottom using resistance heating were performed. Since both edges of the sheet in contact with a pair of electrodes were not heated, cracks occurred around the corners of the bottom due to the partially high flow stress. The cracks were prevented by slitting both edges before resistance heating because of the elongation of the edges. In addition, the hot stamping of titanium alloy sheet into joggle using partial resistance heating were performed. The distortion of sheet was reduced by reduction in area of resistance heating

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Journal articles on the topic 'Titanium sheet'

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