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Artykuły w czasopismach na temat „Tensile zone”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 20 lutego 2023

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1

Zhou, Yi, Meng Cui, Dequan Zhou, Xiaojia Wang, and Xiao Fu. "Meso-Experimental Study on Tensile Characteristics of Clay." Advances in Civil Engineering 2021 (March 29, 2021): 1–16. http://dx.doi.org/10.1155/2021/8875903.

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This paper presents an experimental study on the meso-structure change of clay using an innovative testing system. It aims to evaluate the tensile characteristics of clay. The testing system designed in this paper includes a tensile loading device, an image acquisition device, and an image processing program, which can collect and process the meso-structural images of the soil sample and predict the location of tensile fracture zone with a small preloading. The tests were conducted with three different observation zones, including the tensile fracture zone (Zone 1), the adjacent area of tensil

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2

Zheng, Yi, Yao Hui Liu, Yu Lai Song, Jia’an Liu, Ling Nan Kong, and Yan Liang. "Effect of Welding Heat Input on Microstructure and Softening Behavior of 5CrMoV Steel." Key Engineering Materials 735 (May 2017): 42–48. http://dx.doi.org/10.4028/www.scientific.net/kem.735.42.

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Three different heat input combinations for the medium carbon alloy steels 5CrMoV are compared in terms of the heat affected zone of microstructures, hardness, and tensile properties. The microstructures in the heat affected zone are predominately ferrite and bainite, with grain size variation in different sub-zones and different heat input. Analyses of the micro-hardness profiles indicated that softening phenomenon occurs in the entire heat affected zone, and high heat input resulted in the greatest decrease in hardness. The results of the tensile tests reveal tensile properties of the heat a

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3

Darwis, Mardis, Rudy Djamaluddin, Rita Irmawaty, and Astiah Amir. "Analisis Pola Kegagalan Balok Sistem Rangka dengan Perkuatan di Daerah Tumpuan." Jurnal Penelitian Enjiniring 24, no. 1 (October 26, 2020): 17–23. http://dx.doi.org/10.25042/jpe.052020.03.

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The previous research of using truss system reinforcement in the beam without concrete (BTR) in the tension zone causes a decrease in flexural capacity due to the failure in the area near the support. Therefore, it is necessary to add tensile reinforcement in the support zone. This study aims to analyze the ultimate capacity of the truss system concrete beam strengthened with tensile reinforcement and to analyze the effect of tensile reinforcement in support zone due to crack pattern. This study was conducted experimentally in the laboratory. The dimension of truss reinforced concrete specimen

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4

EL-NEMER, SAMIR. "INHOMOGENEOUS DEFORMATION ZONE IN TENSILE SPECIMEN." International Conference on Applied Mechanics and Mechanical Engineering 1, no. 1 (May 1, 1986): 35–42. http://dx.doi.org/10.21608/amme.1986.51834.

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5

Baskutis, Saulius, Jolanta Baskutiene, and Edvinas Bernotaitis. "Experimental Study of Welded Joints of Aluminium Alloy AW6082." Solid State Phenomena 260 (July 2017): 212–18. http://dx.doi.org/10.4028/www.scientific.net/ssp.260.212.

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This paper considers mechanical properties of the welded joints of aluminium alloy AW6082 under varying metal inert gas welding conditions, determined by tensile and microhardness tests. The test joints were produced at different welding current and welding speed. Cross sections of the welding zones have been analysed. The influence of heat input on the tensile strength properties and hardness of the base metal, heat affected and fusion zones were studied. The behaviour of double-V butt weld joints was investigated by tensile tests. Static tensile test and metallographic examination results sh

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6

Chen, Qing Feng, Zhong Hui Chen, Ning Ma, Wei Zhang, and Hui Li. "The Zonal Disintegration Law within Coal in Front of Working Face in Deep Coal Mine." Applied Mechanics and Materials 353-356 (August 2013): 1082–89. http://dx.doi.org/10.4028/www.scientific.net/amm.353-356.1082.

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The mining coal in the front of long wall face consists of elastic zone, plastic zone and fracture zone. Based on the research of zonaldisintegration of surrounding rock mass in deep tunnel, the zonal disintegration phenomenon of deep coal mine was analyzed by using the theoretical analysis method. On the basis of the Griffith theory, the internal and external boundary formulas of fracture zone and the mechanical criteria of zonal disintegration were obtained. The research shows that the essence of zonal disintegration is the tensile failure and brittle tension crack failure under the abutment

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7

Snider, G. R., J. Lomakin, M. Singh, S. H. Gehrke, and M. S. Detamore. "Regional Dynamic Tensile Properties of the TMJ Disc." Journal of Dental Research 87, no. 11 (November 2008): 1053–57. http://dx.doi.org/10.1177/154405910808701112.

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Although the TMJ disc has been well-characterized under tension and compression, dynamic viscoelastic regional and directional variations have heretofore not been investigated. We hypothesized that the intermediate zone under mediolateral tension would exhibit lower dynamic moduli compared with the other regions of the disc under either mediolateral or anteroposterior tension. Specimens were prepared from porcine discs (3 regions/direction), and dynamic tensile sweeps were performed at 1% strain over a frequency range of 0.1 to 100 rad/sec. Generally, the intermediate zone possessed the lowest

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8

NESSLER, J. P., P. C. AMADIO, L. J. BERGLUND, and K. N. AN. "Healing of Canine Tendon in Zones Subjected to Different Mechanical Forces." Journal of Hand Surgery 17, no. 5 (October 1992): 561–68. http://dx.doi.org/10.1016/s0266-7681(05)80242-6.

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The effect of external force environment on the healing of a partial thickness injury to canine flexor tendon was studied. A 50% laceration was made in either the fibrocartilaginous (compressive) zone or in the tendinous (tensile) zone of canine flexor digitorum profundus tendons. After three or six weeks, the tendons were harvested. An optical method for determining zone-specific material properties showed that, in response to injury, the structural stiffness decreased in the tensile zone of the tendon but increased in the compressive zone. The mechanical properties and failure mechanism of c

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9

Parasuraman, Prabhuraj, Tushar Sonar, and Selvaraj Rajakumar. "Microstructure, tensile properties and fracture toughness of friction stir welded AA7075-T651 aluminium alloy joints." Materials Testing 64, no. 12 (November 29, 2022): 1843–50. http://dx.doi.org/10.1515/mt-2022-0212.

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Abstract The main objective of this investigation is to study the microstructure, tensile properties and fracture toughness of friction stir welded (FSW) butt joints of 10 mm thick AA7075-T651 plates. The microstructural features of stir zone (SZ), thermos-mechanically affected zone (TMAZ), heat affected zone (HAZ) were analyzed using optical microscopy technique. The tensile properties were evaluated using smooth and notch tensile specimens and compared to base metal properties. The microhardness survey was done across the weld cross section and correlated to the failure of tensile specimens.

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10

Li, Juan, Honglong Zhao, Nian Zhou, Yingzhe Zhang, Qingdong Qin, Daoyi Wang, Jianguo Jiao, Guoli Tang, and Yonghua Li. "Study on Microstructure of Fiber Laser Welding of CoCrCuFeNi High Entropy Alloy." Materials 15, no. 24 (December 8, 2022): 8777. http://dx.doi.org/10.3390/ma15248777.

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A CoCrCuFeNi high-entropy alloy was successfully welded in this study using fiber laser welding. The effects of the welding parameters on the microstructure and mechanical properties were studied. Three zones were formed: the fusion zone, partial melting zone, and base metal. The base metal exhibited a typical dendrite structure, and the Cu element segregated in the interdendrite. The fusion zone consisted of fine equiaxed crystals and columnar crystals with the same crystalline structure as the base metal. The fusion zone exhibited minimal compositional microsegregation after laser welding. E

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11

Abolusoro, Olatunji P., and Esther T. Akinlabi. "Effects of processing parameters on mechanical, material flow and wear behaviour of friction stir welded 6101-T6 and 7075-T651 aluminium alloys." Manufacturing Review 7 (2020): 1. http://dx.doi.org/10.1051/mfreview/2019026.

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Dissimilar friction stir welding (FSW) between 6101-T6 and 7075-T651 aluminium alloys was conducted. Three different parameters each were investigated for rotational speed and travel speed, and the effects of these parameters on the tensile behaviour, hardness and wear were evaluated. The results indicate that the ultimate tensile strength increases with an increase in the feed rate. However, the increase in rotational speed decreases the ultimate tensile values. The fractured analysis of the tensile samples shows similarities in the fractured pattern as all the samples failed at heat affected

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12

Chen, Yu, Xing Hua Chen, and Shuang Wang. "Mechanism of Welding Test Pieces in Tensile Property Anomaly." Advanced Materials Research 472-475 (February 2012): 1147–50. http://dx.doi.org/10.4028/www.scientific.net/amr.472-475.1147.

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Aiming at the mechanical property abnormality of a certain cylinder test piece for aerospace application, scanning electron microscope and metallographic microscope were used to observe and analyze the fracture and weld structure of test pieces under tensile test, and the reason of property abnormality was determined. On the fracture of welding test pieces under tensile test formed two evident characteristic zones, one of which was the initial zone looking like arc ribbons alternating with each other. More obvious texture structure formed in the welding heat affected zone, with the direction c

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13

Ran, X. Z., H. Cheng, D. Liu, S. Q. Zhang, H. B. Tang, and H. M. Wang. "Microstructure and Mechanical Properties of Plasma Arc Welding Joint for Laser Melting-Deposited AerMet100 Ultrahigh-Strength Steel." Materials Science Forum 789 (April 2014): 424–30. http://dx.doi.org/10.4028/www.scientific.net/msf.789.424.

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The repair of laser melting-deposited AerMet100 ultrahigh strength steel (UHSS) heat-treated samples with groove machined was conducted by low-cost plasma arc welding (PAW). And the microstructure and mechanical properties of welding joint were examined by optical microscopy (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD), micro-hardness test and the tensile mechanical test. The experimental results indicated that the welding zone with low hardness values mainly consisted of columnar grains with about 200μm width which epitaxial growth from substrate grains, and in which the

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14

Peng, Ru Lin, Jin Ming Zhou, Sten Johansson, Annethe Bellinius, Volodymr Bushlya, and Jan Eric Ståhl. "Influence of Dry Cut and Tool Wear on Residual Stresses in High Speed Machining of Nickel-Based Superalloy." Materials Science Forum 768-769 (September 2013): 470–77. http://dx.doi.org/10.4028/www.scientific.net/msf.768-769.470.

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Machining induced residual stresses were investigated in Inconel 718 prepared by high speed turning under dry cut condition. The influence of cutting tool wear and the use of cutting fluid were studied. By x-ray diffraction measurements, characteristic residual stress distributions with tensile stresses in the top layer and compressive stresses in the layer below were found in all the investigated samples. The magnitude of surface tensile stresses and size of the tension as well as compression zones varied depending on the cutting condition. The application of cutting fluid for turning using n

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15

Zhou, Guang, Xin Qi Yang, and Xiao Dong Xu. "Study on Mechanical Behaviors in Friction Stir Welding of 6061-T4 T-Joints." Advanced Materials Research 418-420 (December 2011): 1092–96. http://dx.doi.org/10.4028/www.scientific.net/amr.418-420.1092.

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Friction stir welding (FSW) of T-joints composed by 3mm thick 6061-T4 alloy was presented and the influences of process parameters on hardness profiles and tensile strength were discussed specifically. Two low hardness zones on the skin and one low hardness zone on the stringer were found. Tensile behaviors of T-joints were examined in two directions—in skin direction and in stringer direction. It was found that the tensile strength ranged from 170~180MPa for all specimens in the skin direction. And the specimens failed in heat affected zone (HAZ) corresponding to the lowest hardness. In the s

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16

Mahdi, Elsadig, E. Eltai, Fatima Ghassan Alabtah, and Faysal Fayez Eliyan. "Mechanical Characterization of AA 6061-T6 MIG Welded Aluminum Alloys Using a Robotic Arm." Key Engineering Materials 913 (March 18, 2022): 271–78. http://dx.doi.org/10.4028/p-rhrr3n.

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Aluminum alloys are of particular interest in the design of lightweight structures in different applications. Accordingly, welding aluminum alloys (AA) is a critical issue; for example, welding defects could arise during the traditional welding of aluminum alloys. This paper investigates the effects of welding using a robotic arm on the mechanical properties of 6061-T6 Aluminum alloy, as plates joined by Metal Inert Gas (MIG) welding. The tensile behavior and mechanical properties were investigated using tensile testing, hardness testing, and impact testing. The tensile behavior of AA-6061-T6

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17

Mani, Cherish, Sozharajan Balasubramani, Ramanujam Karthikeyan, and Sathish Kannan. "Digital Image Correlation of Tensile Properties for Monel 400/SS 316L Dissimilar Metal Welding Joints." Materials 14, no. 6 (March 22, 2021): 1560. http://dx.doi.org/10.3390/ma14061560.

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Dissimilar metal weld joints of Monel 400 and Stainless Steel 316L stainless steel were carried out using Gas Tungsten Arc Welding (GTAW). Conventional annealing and cryogenic treatment were performed on the welded joints. Weld joints of this combination of materials have enormous potential applications in power industry and the available related literature is limited. In the present study, the tensile properties of heat treated (HT), cryotreated (CT), and untreated (UT) specimens were studied. The engineering stress and strain were determined experimentally as per Standard Test Methods for Te

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18

Xu, Tian Han, Yao Rong Feng, Sheng Yin Song, Zhi Hao Jin, and Dang Hui Wang. "Investigation of Fracture Mechanism of Casing-Drilling Steels." Advanced Materials Research 197-198 (February 2011): 1647–50. http://dx.doi.org/10.4028/www.scientific.net/amr.197-198.1647.

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The paper reports on an investigation of the fracture mechanism of both tensile and impact fracture in three types of casing-drilling steels. The results show that the tensile fracture surface of N80 steel includes fibrous zone, radiation area and shear lip zone, and those of both K55 and P110 steels include two zones; all the tensile fracture surfaces of three types of casing drilling steels show the ductile fracture mode, the ductile fracture mode indicated with dimples is observed on all zones; the impact fracture surface of the N80 steel possesses a combined quasi-cleavage and ductile frac

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19

Gu, Sen Dong, Ji Peng Zhao, Rui Jie Ouyang, and Yong Hong Zhang. "Microstructural Characterization and Tensile Behavior of TA1 Titanium Alloy Sheet Welded by Electron Beam Welding." Materials Science Forum 1027 (April 2021): 149–54. http://dx.doi.org/10.4028/www.scientific.net/msf.1027.149.

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In the present study, TA1 titanium alloy sheets with a thickness of 0.8mm were welded by electron beam welding. Microstructure of the welded region was investigated using optical microscope and electron backscattered diffraction. Then, the tensile test was conducted to analyse the tensile behavior of the welded sheets as well as the fractography of the fracture surfaces. It is shown that the mean grain size in the heat-affected zone is smaller than that in the fusion zone and base material. The strength of the base metal is lower than that of the fusion zone and heat-affected zone. The average

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20

D., Antony Prabu, and Subbaiah K. "Microstructure and Mechanical Behavior of Sc Doped Filler Rod in TIG Welding Dissimilar Al Mg Alloys." Journal of New Materials for Electrochemical Systems 24, no. 3 (September 30, 2021): 143–50. http://dx.doi.org/10.14447/jnmes.v24i3.a01.

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The present work reports about the effect of cast scandium doped ER5356 filler rod in Tungsten Inert Gas welding of dissimilar Aluminium Magnesium alloys. The grain refinement effect on weld microstructure by transition metal scandium was investigated with optical and scanning electron microscope. Additionally, XRD analysis, tensile strength (global and component joint) and microhardness were tested on weld samples. The microstructural examination in weld fusion zone observed fine grain size and suppressed dendrite arm spacing. The formation of Al3Sc precipitate in weld fusion zone due to scan

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21

Lin, Sen, Jianguo Tang, Shengdan Liu, Yunlai Deng, Huaqiang Lin, Hua Ji, Lingying Ye, and Xinming Zhang. "Effect of Travel Speed on Microstructure and Mechanical Properties of FSW Joints for Al–Zn–Mg Alloy." Materials 12, no. 24 (December 12, 2019): 4178. http://dx.doi.org/10.3390/ma12244178.

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The microstructures and mechanical properties of friction stir welded (FSW) Al–Zn–Mg alloy plate under different travel speeds were investigated. Both the average grain sizes (AGSs) of the shoulder affected zone (SAZ), nugget zone (NZ), and the widths of thermo-mechanically affected zone (TMAZ) decreased with the increase of travel speed. Moreover, the AGSs of NZ are always about 60% of that of SAZ at different travel speeds. The fractions of high-angle grain boundaries (HAGBs) in the FSW joints reduce with the distance away from the stir zone (SZ). Furthermore, the initial η’ strengthening pr

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22

Li, Jian Wei, Zhong Su, Gui Ping Lv, Li Jun Pang, and Wei Jia. "Peak-To-Peak Change in Magnetization Caused by Fracture." Advanced Materials Research 787 (September 2013): 755–58. http://dx.doi.org/10.4028/www.scientific.net/amr.787.755.

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To simulated the magnetization change at the instant of fracture, assume that the distribution of dislocation-magnetic dipole is consistent, the models of dislocation-magnetic dipole for tensile fracture and tensile-tensile fatigue fracture are established, respectively: The distribution of magnetic dipole for tensile fracture is linear increase from distant to the fracture zone, while the distribution of magnetic dipole for tensile-tensile fatigue fracture is converging only at the fracture zone. It is found that the established model can present the change of peak-to-peak in magnetization fo

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23

Yu, Yang, Yi Hua Dou, Fu Xiang Zhang, and Xiang Tong Yang. "Analysis of Premium Connection of Connecting and Sealing Ability Loaded by Axial Tensile Loads." Applied Mechanics and Materials 268-270 (December 2012): 737–40. http://dx.doi.org/10.4028/www.scientific.net/amm.268-270.737.

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It is necessary to know the connecting and sealing ability of premium connection for appropriate choices of different working conditions. By finite element method, the finite element model of premium connection is established and the stresses of seal section, shoulder zone and thread surface of tubing by axial tensile loads are analyzed. The results show that shoulder zone is subject to most axial stresses at made-up state, which will make distribution of stresses on thread reasonable. With the increase of axial tensile loads, stresses of thread on both ends increase and on seal section and sh

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24

Zheng, Bowen, Shengwen Qi, Xiaolin Huang, Ning Liang, and Songfeng Guo. "Compression-Induced Tensile Mechanical Behaviors of the Crystalline Rock under Dynamic Loads." Materials 13, no. 22 (November 12, 2020): 5107. http://dx.doi.org/10.3390/ma13225107.

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Characterization of the tensile mechanical behaviors of rocks under dynamic loads is of great significance for the practical engineering. However, thus far, its micromechanics have rarely been studied. This paper micromechanically investigated the compression-induced tensile mechanical behaviors of the crystalline rock using the grain-based model (GBM) by universal distinct element code (UDEC). Results showed that the crystalline rock has the rate- and heterogeneity-dependency of tensile behaviors. Essentially, dynamic Brazilian tensile strength increased in a linear manner as the loading rate

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Patel, Vinay Kumar, and Komal Rani. "Mechanical and Wear Properties of Friction Stir Welded 0–6Wt% nAl2O3 Reinforced Al-13Wt%Si Composites." Strojnícky casopis – Journal of Mechanical Engineering 67, no. 1 (April 1, 2017): 77–86. http://dx.doi.org/10.1515/scjme-2017-0008.

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Abstract Friction Stir Welding (FSW) of an Al-13%Si alloy matrix reinforced with 0, 3 and 6 wt% Al2O3 nanoparticles (nAl2O3) is performed and the optical microstructures, tensile strength, hardness and sliding wear properties of friction stir welded joints are investigated and compared to those of base materials. Four different zones of distinct appearances were observed during FSW, which exhibited altered microstructures in the nugget zone (NZ), thermo mechanically affected zone (TMAZ), heat affected zone (HAZ), and base material zone (BMZ). The ultimate tensile strength of the base materials

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Zuo, Yu Jun, Chun An Tang, Wan Cheng Zhu, and Lian Chong Li. "Influence of Duration of Stress Wave on the Spallation Process in Inhomogeneous Material." Key Engineering Materials 353-358 (September 2007): 917–20. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.917.

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Based on mesoscopic damage mechanics, a numerical code RFPA2D (dynamic version) is developed to simulate the spallation process of inhomogeneous medium induced by reflection of stress wave, and the influence of duration of stress wave on spallation is discussed. For convenience of description and discussion, the failure area in the immediate vicinity of loading position of model is divided into two zones, i.e. comminution zone and fracture zone; and the failure area caused by spalling in model is defined as spalling zone. The comminution zone is affected little by the duration of stress wave,

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Ahmed, Talha, Wali Muhammad, Mustasim Billah Bhatty, Ahnaf Usman Zillohu, and Hamid Zaigham. "Optimization of Maximum Tool Travel Speed for Friction Stir Welded AA-2014-T6 without Compromising the Mechanical Properties." Key Engineering Materials 875 (February 2021): 219–26. http://dx.doi.org/10.4028/www.scientific.net/kem.875.219.

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In this study optimization of maximum travel speed that can be achieved for Friction Stir Welding of Aluminum Alloy 2014-T6 without compromising the mechanical properties was carried out. Joints were made at different travel speeds of 200, 300, 400, 500 and 600 mm/min with constant tool rotational speed of 800 rpm and tool tilt angle of 2.The samples were characterized by stereo microscopy, optical microscopy, scanning electron microscopy, Vickers microhardness testing and tensile testing. Microstructural features of as-welded samples revealed refined equiaxed grains in nugget zone and grain

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Cui, Maomao, Zhao Wang, Leigang Wang, and Yao Huang. "Numerical Simulation and Multi-Objective Optimization of Partition Cooling in Hot Stamping of the Automotive B-Pillar Based on RSM and NSGA-II." Metals 10, no. 9 (September 18, 2020): 1264. http://dx.doi.org/10.3390/met10091264.

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In this study, the simulation and optimization of the partition cooling in the hot stamping process was carried out for an automotive B-pillar through minimizing the maximum thickening rate and the maximum thinning rate located in the rapid and slow cooling zones. The optimization was implemented by investigating the process parameters such as friction coefficient, sheet austenitizing temperature, holding time, heating zone temperature, the upper binder force and the lower binder force. The optimal Latin hypercube design (OLHD), the response surface methodology (RSM) and the non-dominated sort

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Denesh, Mr K. C., and V. Senthilkumar. "Experimental Study on The Steel Fiber Reinforcement Concrete." International Journal for Research in Applied Science and Engineering Technology 11, no. 1 (January 31, 2023): 710–13. http://dx.doi.org/10.22214/ijraset.2023.48670.

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Abstract: Concrete is one of the world most widely used construction material. However, since the early 1800’s, it has been known that concrete is weak in tension. Weak tensile strength combined with brittle behavior result in sudden tensile failure without warning. This is obviously not desirable for any construction material. Thus, concrete requires some form of tensile reinforcement to compensate its brittle behavior and improve its tensile strength and strain capacity to be used in structural applications. Historically, steel has been used as the material of choice for tensile reinforcemen

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Wang, Feng, Bai Qing Xiong, Yong An Zhang, Hong Wei Liu, Zhi Hui Li, Xi Wu Li, and Feng Bin Xia. "Microstructure and Mechanical Properties of Laser Beam Welded AA7021 Aluminum Alloy." Applied Mechanics and Materials 488-489 (January 2014): 106–10. http://dx.doi.org/10.4028/www.scientific.net/amm.488-489.106.

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In this study, a laser beam welds in a Al-Zn-Mg alloy were characterized by optical microscope (OM), scanning electron microscope (SEM), transmission electron microscope (TEM) and tensile tests. It is found that the joint of the alloy contained three distinctive regions, i.e. fusion zone, heat affected zone and base metal region. The fusion zone consists of small grains, whose size is heterogeneously distributed. Extensive microhardness measurements were conducted in the weld regions of the nuggets exhibited a hardness loss in the fusion zone due to the loss of strengthening phases. Microstruc

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Selig, E. T. "Tensile zone effects on performance of layered systems." Géotechnique 37, no. 3 (September 1987): 247–54. http://dx.doi.org/10.1680/geot.1987.37.3.247.

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Zaragoci, Jean-François, Luisa Silva, Michel Bellet, and Charles-André Gandin. "Numerical tensile test on a mushy zone sample." IOP Conference Series: Materials Science and Engineering 33 (July 3, 2012): 012054. http://dx.doi.org/10.1088/1757-899x/33/1/012054.

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He, En Guang, Li Chen, and Ming Tao Wang. "Study on the Microstructure and Property for T-Joints of Al-Li Alloy Welded by Double Sided Synchronization Fiber Laser." Advanced Materials Research 1095 (March 2015): 859–64. http://dx.doi.org/10.4028/www.scientific.net/amr.1095.859.

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In the experiment, the T-joints of 2060-T8/2099-T83 Aluminum-Lithium by double sided synchronization Fiber laser welding with thickness of 2 mm was studied aimed to know the microstructure, the distributions of micro-hardness, and the tensile strength of the T-joints. The results show that the microstructure is columnar fine grain zone, dendrite zone, and equiaxed crystal zone in turn from the weld fusion line to weld centre; the micro-hardness of the weld is lower than the micro-hardness of base metal, and softening phenomenon appears in the weld; The average circumferential tensile strength

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Ma, Chao Qun, Qi Qiang Duan, and Xiao Wu Li. "Plastic Deformation and Damage Behavior of AL6XN Super-Austenitic Stainless Steels." Advanced Materials Research 79-82 (August 2009): 1951–54. http://dx.doi.org/10.4028/www.scientific.net/amr.79-82.1951.

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Tensile and compressive deformation and damage behaviors of Al6XN super-austenitic stainless steels were examined at different strain rates. The deformation and fracture surfaces were characterized by scanning electron microscopy (SEM). It was found that the uniaxial deformation (tensile or compressive) behaviors of Al6XN stainless steel shows a low strain rate sensitivity over the range of 10-4s-1 - 10-2s-1. The tensile and compressive yield strengths measured are nearly comparable. The steel shows a good tensile plasticity. Dislocation slip deformation is the main characteristic of uniaxial

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Wang, Feng, Bai Qing Xiong, Yon Gan Zhang, Hong Wei Liu, Zhi Hui Li, and Xi Wu Li. "Effect of Metal Inert Gas Welding on Microstructure and Mechanical Properties of Al-Zn-Mg Alloy." Advanced Materials Research 418-420 (December 2011): 1396–99. http://dx.doi.org/10.4028/www.scientific.net/amr.418-420.1396.

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Abstract. The microstructure and mechanical properties of a metal inert gas welds in a medium strength Al-4Zn-1Mg alloy were characterized by optical microscope (OM), scanning electron microscope (SEM) and tensile tests. It is found that the joint of the alloy contained three distinctive regions, i.e. fusion zone, heat affected zone and base metal region. Extensive microhardness measurements were conducted in the weld regions of the nuggets exhibited a hardness loss in the fusion zone due to the loss of strengthening phases. Microstructural examination of the joints revealed typical eutectic s

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Pei, Chao Wu, Yong Yao, Dai Guo Chen, Bin Jia, Li Jun He, and Jiu Li Zhang. "Experimental Study of the Tensile Bond Strength in Concrete Aggregate - Paste Interfacial Transition Zone." Applied Mechanics and Materials 193-194 (August 2012): 1384–88. http://dx.doi.org/10.4028/www.scientific.net/amm.193-194.1384.

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Study on the characteristics of tensile bond strength in concrete interfacial transition zone. Calculate the tensile bond strength of interfacial transition zone in concrete by the way of vertical drawing cobblestones of different grain size from C30 concrete by MTS hydraulic loading system .(the grain size include 50,70,90,100mm) results show that:1.when the cobblestones diameter is in a certain range(<90mm in this experiment)or the bonded area is in a certain range(<5251 mm2 in this experiment), The tensile bond strength of concrete interfacial transition zone nothing to do with the co

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Li, Xiu Hua, Wei Min Cong, Chen Xi Yue, and Jian Xiong Liu. "Research on the Technology of GFRP Bars and PC Strand Combined Supporting Piles by Experiment." Advanced Materials Research 838-841 (November 2013): 657–60. http://dx.doi.org/10.4028/www.scientific.net/amr.838-841.657.

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GFRP bars and PC strand combination pile that is configuration GFRP bars in the compression zone of the general pile, in the tension zone configuration PC strand. Pile construction is completed and before the excavation, applied partially prestressed for the tension zone of PC strand, so that GFRP bars in tension, with the excavation pit, GFRP bars tendons pulling force gradually reduced; When the excavation to a certain depth, the second prestressed steel strand so until the excavation is completed. In summary, the technology features is GFRP bars, concrete piles, PC strand all in tension. Th

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Liang, Yan, Yaohui Liu, Yulai Song, and Wei Cui. "Optimizing the Mechanical Properties in the Repair Zone of 5Cr5MoV by Controlling Welding Heat Input." Metals 8, no. 12 (November 23, 2018): 981. http://dx.doi.org/10.3390/met8120981.

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The influence of welding heat input on the microstructure and mechanical properties of 5Cr5MoV die steel was studied in order to improve the mechanical properties of the cold working die and extend its service life. Shielded metal arc welding (SMAW) method was used with different heat inputs in the range from 4.2 to 6.61 kJ/cm to repair the 5Cr5MoV die steel. Microhardness and tensile properties were performed to evaluate the repaired quality of the cold working die steel. The microhardness of the weld repaired zone gradually decreased from the weld to the tempering zone. The highest microhard

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Wang, Xiao Ming, Sheng Zhu, Zhi Hao Zhao, Qi Wei Wang, and Xiao Dong Zhao. "Effect of Micro-Alloyed Treatment for 5183 Welding Wire on Microstructure and Tensile Property of Welded Joint." Applied Mechanics and Materials 633-634 (September 2014): 821–25. http://dx.doi.org/10.4028/www.scientific.net/amm.633-634.821.

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5183 welding wire micro-alloyed using Sc, Zr, Er and automatic MIG welding system applied to weld 7A52 aluminum alloy. Optical microscope and universal tensile testing machine utilized to investigate microstructure and tensile property of welded joint, respectively. The results indicated that welded zone and fused zone was composed of uniform isometric crystal and tiny isometric dendrite crystal when the welded joint was fabricated by using 5183 welding wire micro-alloyed via rare earth element, respectively. Tensile strength and specific elongation of welded zone was improved utmostly when th

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Zhao, Tianbo, Yutaka S. Sato, Rongshi Xiao, Ting Huang, and Jingquan Zhang. "Laser pressure welding of Al-Li alloy 2198: effect of welding parameters on fusion zone characteristics associated with mechanical properties." High Temperature Materials and Processes 39, no. 1 (May 27, 2020): 146–56. http://dx.doi.org/10.1515/htmp-2020-0047.

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AbstractAl-Li alloy 2198 exhibits good combination of toughness and strength but its application is strongly limited by the poor weldability due to the formation of porosities during fusion-welding. This is the first study proposing and verifying a new approach to produce defect-free laser welds of poorly fusion-weldable Al-Li alloy 2198 with applied external pressure, i.e., feasibility of laser pressure welding to Al-Li alloy 2198 was examined. The microstructures associated with tensile shear behavior of laser pressure welded Al-Li alloy 2198 obtained at various welding parameters were analy

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Uzunali, Umut Yaşar, Hamdullah Cuvalcı, Barbaros Atmaca, Serhat Demir, and Serdar Özkaya. "Mechanical properties of quenched and tempered steel welds." Materials Testing 64, no. 11 (November 1, 2022): 1662–74. http://dx.doi.org/10.1515/mt-2022-0047.

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Abstract Welding is the most commonly used joining process in the industry. Generally, weld zone consists of three different regions such as base metal, heat-affected zone (HAZ) and weld metal (WM). Microstructure of HAZ and WM changes due to the heat effects after the welding process. These effects cause changes in mechanical properties such as Young modulus, tensile strength and hardness in weld zone. The aim of this paper is to identify the mechanical properties of weld zone by uni-axial tensile test, nanoindentation test and hardness test. For this aim, quenched and tempered steel plates w

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Tu, H. Y., Ulrich Weber, and Siegfried Schmauder. "Numerical Investigation of the Damage Behavior of S355 EBW by Cohesive Zone Modeling." Advanced Materials Research 1102 (May 2015): 149–53. http://dx.doi.org/10.4028/www.scientific.net/amr.1102.149.

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In this paper, the cohesive zone model is used to study the fracture behavior of an electron beam welded (EBW) steel joint. Mechanical properties of different weld regions are derived from the tensile test results of flat specimens, which are obtained from the respective weld regions. Based on the tensile test of notched round specimens, the cohesive strength T0can be fixed. With the fixed T0value, the cohesive model is applied to compact tension (C(T)) specimens with the initial crack located at different positions of weldment with different cohesive energy values Γ0. Numerical simulations ar

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Ahn, Young Nam, Min Jung Kang, and Cheol Hee Kim. "Analysis of Laser Weldments for Dual-Phase and Martensitic Steel Sheets for Automotive Applications." Defect and Diffusion Forum 353 (May 2014): 8–12. http://dx.doi.org/10.4028/www.scientific.net/ddf.353.8.

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Laser weldability was investigated for advanced high-strength steel sheets for automotive applications. Dual-phase steel (DP780) and martensitic steel (MS1300) sheets were employed as base materials; laser-butt and overlap welding experiments were conducted on combinations of steels with similar and dissimilar strength. The tensile strength and metallurgical morphology were analysed for the butt-welded specimens; tensile-shear strength and bead shapes were analysed for the overlap-welded specimens. Even with laser welding, martensite in the heat-affected zone disintegrated and resulted in a so

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Li, Zhijun, Zihao Li, Weijie Tang, Shengsheng Zhao, and Hongying Wang. "Differences in the Microstructures and Tensile Properties of Each Zone of Inertia Friction Welded Joints of TA19 Titanium Alloy." Processes 11, no. 1 (January 3, 2023): 147. http://dx.doi.org/10.3390/pr11010147.

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TA19 titanium alloy is a novel medium-temperature, high-strength titanium alloy widely used in the aerospace industry, and its welding performance is very important for the manufacturing of structural parts. In this study, TA19 titanium alloy was connected by inertial friction welding (IFW). After welding, the microstructural and alloying elements of the IFW joints were investigated; the results showed that the microstructures of each zone of the IFW joint were different, and accumulations of the β-stable element Mo were only observed in the base metal (BM) and the heat-affected zone (HAZ). Te

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45

Kosnan, Mohamad Shahrul Effendy, Zaini Ahmad, Abdoulhdi Amhmad Borhana, and Mohd Nasir Tamin. "Finite Element Simulation of Ductile Failure Process of Spot Welded Joint under Tensile Loading." Applied Mechanics and Materials 660 (October 2014): 623–27. http://dx.doi.org/10.4028/www.scientific.net/amm.660.623.

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Deformation response and failure process of a spot welded joint are investigated in this study. For this purpose, a cross-tension spot welded joint sample made of dual phase steel sheets (DP600) is prepared and tensile tested to failure. Complementary FE simulation of the test is performed. The FE model acknowledges the variation of properties across the spot welded region. Rice-Tracey ductile damage model is approximated and employed in the simulation. Close comparison of load-displacement curves and deformed shape with measured values serve as validation of the FE model. Results show that FE

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Wang, X. B. "Distributions of Local Damage Variable and Local Plastic Tensile Strain and Precursors to Failure of Quasi-Brittle Pure Bending Beam." Key Engineering Materials 347 (September 2007): 447–52. http://dx.doi.org/10.4028/www.scientific.net/kem.347.447.

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For many quasi-brittle materials (such as rock, ceramic and concrete) in pure bending state, the material on the tensile side will fail firstly since the compressive strength can be ten times the tensile strength. After tensile strain localization zone is initiated in the midspan of the beam, its propagation direction will be perpendicular to the neutral axis. In the paper, using nonlocal theory or gradient-dependent plasticity, the distributions of local plastic tensile strain and local damage variable in tensile strain localization zone of a pure bending beam are analyzed theoretically. The

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Fan, Hao, Peng Zhou, Jie Li, Jiankang Huang, Yu Ni, and Yuanyuan Hui. "Microstructure and Mechanical Properties of Arc Zone and Laser Zone of TC4 Titanium Alloy Laser–TIG Hybrid Welded Joint." Metals 12, no. 11 (October 30, 2022): 1854. http://dx.doi.org/10.3390/met12111854.

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As a high-efficiency and high-quality welding technology, laser-tungsten inert gas (laser–TIG) hybrid welding has been widely used in the aerospace and marine equipment industries. Through laser–TIG hybrid welding of TC4 titanium alloy, the effect of the current on the weld formation, the microstructure and mechanical properties of the arc zone, and the laser zone was studied. The results show that the molten pool in the arc zone will flow periodically, and the flow becomes more intense with an increase in the current, which will result in a finer grain size in the arc zone than in the laser z

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48

Wang, Feng, Yu Ting Zuo, Bai Qing Xiong, Yon Gan Zhang, Hong Wei Liu, Zhi Hui Li, and Xi Wu Li. "Effect of Electron Beam Welding on Microstructure and Mechanical Properties of Spray-Deposited Al-Zn-Mg-Cu Alloy." Applied Mechanics and Materials 302 (February 2013): 230–35. http://dx.doi.org/10.4028/www.scientific.net/amm.302.230.

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In this study, Al-8.6Zn-2.6Mg-2.2Cu (wt,%) alloy was synthesized by the spray atomization and deposition technique. Electron beam welding (EBW) joint in the spray-deposited Al-8.6Zn-2.6Mg-2.2Cu alloy is composed of fusion zone, heat affected zone and base metal region. The microstructure of the fusion zone has been found to be very fine equiaxed grains, and the microstructure of the heat affected zone is mainly composed of α-Al and Al/MgZn2 eutectic microstructure. Extensive microhardness measurements were conducted in the weld regions of the nuggets exhibited a hardness loss in the fusion zon

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Mai, Rong Zhi, Ze Xin Jiang, Jin Jun Ma, and Yong Jun Zhang. "Analytical Study on Microstructure and Mechanical Property in HAZ-Softened Weld Joint with High Heat Input of Low Carbon TMCP Steel." Applied Mechanics and Materials 872 (October 2017): 99–106. http://dx.doi.org/10.4028/www.scientific.net/amm.872.99.

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Three types of low-carbon TMCP steels with different strength of the same carbon equivalent were welded by the flux-cupper back for SAW(FCB) method in this work. The microstructure, hardness and tensile strength of the FCB welded joints were studied. Softening phenomenon occurs in the heat affected zone of low-carbon content and low carbon-equivalent TMCP EH36 steel after high heat input welding. The softened zone is mainly depended on the strength of the base metal (BM), which appears on the fine-grain zone and incomplete crystallize zone of BM with relative low strength, and on the coarse gr

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Hall, Ernest L., and Ann M. Ritter. "Structure and behavior of metal/ceramic interfaces in Ti alloy/SiC metal matrix composites." Journal of Materials Research 8, no. 5 (May 1993): 1158–68. http://dx.doi.org/10.1557/jmr.1993.1158.

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The structure and mechanical behavior of the fiber/matrix interface in Ti alloy/SCS-6 SiC metal matrix composites were studied. In these composites the interface region consists of a fiber-coating region and a metal reaction zone between the SiC fiber body and the metal matrix. The fiber coating consists of a number of zones or layers which are comprised of cubic SiC particles in a turbostratic carbon matrix. Some ambiguity remains, concerning the number of distinct layers and the size, shape, and density of the SiC particles. The effect of composite fabrication and heat treatment on the coati

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