Relevant bibliographies by topics / Dual-Phase (DP) Steels

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  3. Conference papers

Academic literature on the topic 'Dual-Phase (DP) Steels'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 February 2022

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Journal articles on the topic "Dual-Phase (DP) Steels"

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Rasouli, Azam, and Mohammad Mazinani. "The Assessment of Work Hardening Behaviour of Dual Phase Steels with Coarse Martensite Islands." Advanced Materials Research 476-478 (February 2012): 311–15. http://dx.doi.org/10.4028/www.scientific.net/amr.476-478.311.

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In this paper, the tensile properties of dual phase (DP) steels with different martensite contents have been studied. Two steels with 0.09 and 0.15% carbon were used for the production of DP steel samples via intercritical annealing treatment, and the deformation behaviour of DP steel samples were examined during tensile loading. Although DP steels usually show two-stage work hardening behaviour, DP steels in this study with relatively high martensite content and coarse islands size exhibit a three-stage work hardening behaviour. This unusual behaviour was attributed, with the help of SEM micr
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Abdo, Hany S., Asiful H. Seikh, Biplab Baran Mandal, Jabair A. Mohammed, Sameh A. Ragab, and Mohamed S. Abdo. "Microstructural Characterization and Corrosion-Resistance Behavior of Dual-Phase Steels Compared to Conventional Rebar." Crystals 10, no. 11 (2020): 1068. http://dx.doi.org/10.3390/cryst10111068.

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Dual-phase (DP) steels consist of a ferritic matrix dispersed with some percentage of martensite, which gives the material a good combination of strength and ductility, along with the capacity to absorb energy and enhanced corrosion protection properties. The purpose of this work was to study the microstructural and corrosion behavior (mainly pitting and galvanic corrosion) of DP steel compared with that of conventional rebar. To obtain DP steel, low-carbon steels were heat-treated at 950 °C for 1 h and then intercritically annealed at 771 °C for 75 min, followed by quenching in ice-brine wate
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Punyamueang, Suttirat, and Vitoon Uthaisangsuk. "Determination of Stress-Strain Curve of Dual Phase Steel by Nanoindentation Technique." Key Engineering Materials 658 (July 2015): 195–201. http://dx.doi.org/10.4028/www.scientific.net/kem.658.195.

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The advanced high strength (AHS) steels, for example, dual phase (DP) steels, transformation induced plasticity (TRIP) steels and complex (CP) steels principally exhibit multiphase microstructure features. Thus, mechanical behavior of the constituent phases significantly affects the resulting overall properties of such AHS steels. Novel material characterization techniques on micro- and nano-scale have become greatly more important. In this work, stress-strain response of the DP steel grade 1000 was determined by using the Nanoindentation testing. The DP steel showed the microstructure contain
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Mohrbacher, Hardy, Jer-Ren Yang, Yu-Wen Chen, Johannes Rehrl, and Thomas Hebesberger. "Metallurgical Effects of Niobium in Dual Phase Steel." Metals 10, no. 4 (2020): 504. http://dx.doi.org/10.3390/met10040504.

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Dual phase (DP) steels are widely applied in today’s automotive body design. The favorable combination of strength and ductility in such steels is in first place related to the share of ferrite and martensite. The pronounced work hardening behavior prevents localized thinning and allows excellent stretch forming. Niobium microalloying was originally introduced to dual phase steel for improving bendability by refining the microstructure. More recently developed “high ductility” (HD) DP steel variants provide increased drawability aided by a small share of austenite retained in the microstructur
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Wang, Zhi Gang, Zheng Zhi Zhao, Ai Min Zhao, and Jie Yun Ye. "Microstructure and Recrystallization Texture Characterization of Cold-Rolled Dual-Phase Steel." Advanced Materials Research 430-432 (January 2012): 1223–26. http://dx.doi.org/10.4028/www.scientific.net/amr.430-432.1223.

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Deep drawing dual phase steel was designed and trial-produced in the laboratory. The microstructure and recrystallization texture was studied using OM,TEM and XRD techniques. The results show that texture components typically in DP steels are γ (<111>//ND) and α (<110>//RD) fibers, which is partly attributed to the precipitation of Mo-based carbides in hot-rolled plate. Besides, {554}<225> and {332}<113> texture components are also founded in deep drawing DP steels, which are beneficial to improvement of drawability. With the increasing of annealing temperature, the ten
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Matsuyama, Shuntaro, and Enrique I. Galindo-Nava. "A Unified Model for Plasticity in Ferritic, Martensitic and Dual-Phase Steels." Metals 10, no. 6 (2020): 764. http://dx.doi.org/10.3390/met10060764.

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Unified equations for the relationships among dislocation density, carbon content and grain size in ferritic, martensitic and dual-phase steels are presented. Advanced high-strength steels have been developed to meet targets of improved strength and formability in the automotive industry, where combined properties are achieved by tailoring complex microstructures. Specifically, in dual-phase (DP) steels, martensite with high strength and poor ductility reinforces steel, whereas ferrite with high ductility and low strength maintains steel’s formability. To further optimise DP steel’s performanc
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Marvi-Mashhadi, M., A. Rezaee-Bazzaz, and Mohammad Mazinani. "Modelling the Flow Behaviour of Dual-Phase Steels with Different Martensite Volume Fractions by Finite Element Method." Materials Science Forum 706-709 (January 2012): 1503–8. http://dx.doi.org/10.4028/www.scientific.net/msf.706-709.1503.

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Dual-phase (DP) steels have a composite-type microstructure consisting mainly of hard martensite islands embedded in a soft ferrite matrix. DP steels exhibit a characteristic combination of high strength, high work hardening rate and good ductility. Mechanical behaviour of DP steels is closely related to their microstructures. Hence, it is necessary to take into account their microstructural parameters in any attempt to estimate their flow behaviour. In this study, the flow curves of low carbon DP steels with 26.4 and 52% martensite produced by intercritical annealing processes at different te
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Xiong, Zhiping, Andrii G. Kostryzhev, Yanjun Zhao, and Elena V. Pereloma. "Microstructure Evolution during the Production of Dual Phase and Transformation Induced Plasticity Steels Using Modified Strip Casting Simulated in The Laboratory." Metals 9, no. 4 (2019): 449. http://dx.doi.org/10.3390/met9040449.

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Instead of conventional steel making and continuous casting followed by hot and cold rolling, strip casting technology modified with the addition of a continuous annealing stage (namely, modified strip casting) is a promising short-route for producing ferrite-martensite dual-phase (DP) and multi-phase transformation-induced plasticity (TRIP) steels. However, at present, the multi-phase steels are not manufactured by the modified strip casting, due to insufficient knowledge about phase transformations occurring during in-line heat treatment. This study analysed the phase transformations, partic
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Filep, Adám, and Valéria Mertinger. "Microstructure Characterization of Deep-Drawn DP780-Grade Dual Phase Steel." Materials Science Forum 752 (March 2013): 75–84. http://dx.doi.org/10.4028/www.scientific.net/msf.752.75.

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Dual phase (DP) steels belong to the group of high-strength low-alloy (HSLA) steels. Our study focuses on the causes of crack formation of sheets, which are designed for deep drawing, of DP780-grade dual phase steel. Also, a series of heat treatment experiments were performed regarding the effect of intercritical annealing temperature on the structure and mechanical properties of the finished product (in this case a rolled sheet).
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Pan, Zhiyi, Bo Gao, Qingquan Lai, et al. "Microstructure and Mechanical Properties of a Cold-Rolled Ultrafine-Grained Dual-Phase Steel." Materials 11, no. 8 (2018): 1399. http://dx.doi.org/10.3390/ma11081399.

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A new processing route to produce Ultrafine-Grained Dual-Phase steel has been proposed, involving cold-rolling and subsequent intercritical annealing of a fibrous ferrite–martensite starting structure. Ultrafine-grained DP (UFG-DP) steel with an average ferrite grain size of about ~2.7 μm and an average martensite island size of ~2.9 μm was achieved. Tensile testing revealed superior mechanical properties (the ultimate tensile strength of 1267 MPa and uniform elongation of 8.2%) for the new DP steel in comparison with the fibrous DP steels. The superior mechanical properties are attributed to
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Dissertations / Theses on the topic "Dual-Phase (DP) Steels"

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Sung, Ji-Hyun. "The Causes of “Shear Fracture” of Dual-Phase Steels." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1268039436.

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Falk, Johannes. "Fracture prediction of stretched shear cut edges in sheets made of Dual-Phase steel." Thesis, Blekinge Tekniska Högskola, Institutionen för maskinteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-13956.

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Dual-Phase (DP) steels, part of the group of Advanced High Strength Steels (AHSS), are used by car manufactures due to its large strength to weight ratio. The high strength of the DP steel does have a negative impact on the formability during sheet metal forming and stretch forming, e.g. fractures often appear in shear cut edges during forming of blanks made of DP steel.   The main objective with this thesis is to develop a new punch for Volvo Cars that concentrates the strain to the sheared edges of a test specimen made from different types of DP steel. This is done to be able to measure and
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Mallick, Dwaipayan. "Hydrogen behavior in first and second generation of advanced high strength steels." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSEI052.

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Les aciers AHSS sont largement utilisés pour les caisses des véhicules, en raison de leurs bonnes propriétés mécaniques et de leurs capacités à réduire l'empreinte carbone. Toutefois, leur utilisation est limitée par leur sensibilité à la fragilisation par l'hydrogène (HE). La présente étude vise à comprendre l'influence de l'hydrogène sur quatre aciers AHSS : deux biphasés (DP), un phase complexe (CP) et un à plasticité induite (TWIP). Les résultats montrent une forte susceptibilité à l’HE pour les aciers DP et TWIP par rapport aux aciers CP. Le comportement de CP est attribuée à une microstr
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Zanluchi, Jeferson Jorge Dallagnol. "Avaliação de retorno elástico para processos de estampagem à frio dos aços bifásicos DP 600 e DP 800." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/127900.

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Este trabalho procura avaliar o retorno elástico em aços avançados de alta resistência utilizados em processo de dobramento. Para isso, foram usadas chapas de aço bifásico DP 600 e DP 800, ambas revestidas. Foram empregados dois métodos de medição a fim de abordar e avaliar o retorno elástico. O primeiro método abordado foi à conformação de tiras em U e o segundo método foi à realização do ensaio Dobramento Sob Tensão, aos quais possibilitaram a coleta de dados para aplicação em cálculo de coeficiente de atrito no processo de dobramento. Em ambas as avaliações foram utilizadas duas diferentes
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Hou, Yuliang. "Modelling of plasticity and fracture behaviors of dual-phase steel." Thesis, Compiègne, 2016. http://www.theses.fr/2016COMP2302/document.

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L’acier à double phase (DP) a été développé par l'industrie automobile pour le but de réduire le poids, l'amélioration de la performance de la sécurité et l'efficacité énergétique. Habituellement, l'acier DP contient des îlots de martensite dure noyée dans une matrice de ferrite doux. La synergie entre ces deux phases avec la microstructure inhomogène présente d'excellentes propriétés mécaniques. Les propriétés mécaniques (comportements de plasticité et de dégâts) d'acier DP sont principalement dérivés de sa microstructure, par exemple, la fraction de volume, la taille, la distribution et la m
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Olsen, Eric Michael. "Friction Stir Welding of High-Strength Automotive Steel." BYU ScholarsArchive, 2007. https://scholarsarchive.byu.edu/etd/951.

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The following thesis is a study on the ability to create acceptable welds in thin-plate, ultra-high-strength steels (UHSS) by way of friction stir welding (FSW). Steels are welded together to create tailor-welded blanks (TWB) for use in the automotive industry. Dual Phase (DP) 590, 780, and 980 steel as well as Transformation-Induced Plasticity (TRIP) 590 steel with thicknesses ranging from 1.2 mm to 1.8 mm were welded using friction stir welding under a variety of processing conditions, including experiments with dissimilar thicknesses. Samples were tested under tensile loads for initial dete
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Rosado, Diego Belato. "Comparação do efeito da fragilização por hidrogênio em aços com resistência à tração acima de 1000 MPa." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2011. http://hdl.handle.net/10183/37374.

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Este trabalho tem por objetivo avaliar os efeitos do hidrogênio em três diferentes tipos de aços de alta resistência mecânica. São descritos os fenômenos de introdução, difusão e aprisionamento de hidrogênio (H) dentro dos metais, em conjunto com os diferentes tipos de danos provocados devido à presença do hidrogênio. Os materiais de estudo são aços da família Advanced High Strength Steels (AHSS): aços Dual Phase (DP 1000 e DP 1200) e aço Martensítico (M 190). A introdução de hidrogênio nos materiais foi realizada através de carregamento catódico, o qual é representativo para as condições indu
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Piao, Kun. "An Elevated-Temperature Tension-Compression Test and Its Application to Mg AZ31B." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1316096630.

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Figueira, José Tomé Serra Afonso. "Study and Validation of Constitutive Models for AHSS Steels." Master's thesis, 2018. http://hdl.handle.net/10362/66169.

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Advanced High Strength Steels have been extensively used in automotive industry due to their high yield and ultimate tensile strengths, allowing the production of lighter structural components for the car body structure without compromising safety requirements, however these steels exhibit a large springback phenomenon, after forming processes. To deal with this challenge, constitutive material models have been studied to capture the material behaviour under plastic deformation, and accurately predict the springback. Making use of the material characterization tests previously performed, the
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Khan, Mohammad Ibraheem. "Spot Welding of Advanced High Strength Steels (AHSS)." Thesis, 2007. http://hdl.handle.net/10012/2777.

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Efforts to reduce vehicle weight and improve crash performance have resulted in increased application of advanced high strength steels (AHSS) and a recent focus on the weldability of these alloys. Resistance spot welding (RSW) is the primary sheet metal welding process in the manufacture of automotive assemblies. Integration of AHSS into the automotive architecture has brought renewed challenges for achieving acceptable welds. The varying alloying content and processing techniques has further complicated this initiative. The current study examines resistance spot welding of high strength and a
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Conference papers on the topic "Dual-Phase (DP) Steels"

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Tüzemen, Mehmet Çağrı, and Elmas Salamci. "Effect of Microstructure on Mechanical Properties and Abrasive Wear Behavior of Low Carbon Dual-Phase Steels." In ASME 2014 12th Biennial Conference on Engineering Systems Design and Analysis. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/esda2014-20231.

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The mechanical properties and wear behavior of Dual Phase (DP) steels have been investigated and compared with those observed in normalized (N) steel that has the same chemical composition. The DP steels having different content and morphology of martensite were produced by varying intercritical annealing temperature and initial microstructures. Mechanical properties of four different DP steels and N steel have been investigated by carrying out tensile and macrohardness tests. Dry sliding wear tests have been conducted on four different the DP steels and the N steel using pin-on-plate to inves
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Lou, Ming, Yunwu Ma, and Yongbing Li. "Study on Formation and Performance of Electric-Aided Self-Piercing Riveted Aluminum Alloy and Dual-Phase Steels With Different Strength Grades." In ASME 2019 14th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/msec2019-2984.

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Abstract To improve the joint quality by reducing the deformation resistance of dual-phase (DP) steels, electric-aided self-piercing riveting (EA-SPR) was conducted in this paper. The effect of current density on the joint forming process, geometry characteristics and mechanical properties of EA-SPR for both combinations of aluminum to steel and steel to aluminum were investigated and compared with the traditional SPR joints. It was found that the riveting force decreased for all the DP steels with different strength grades. The increase amplitude of undercut increased with the elevated streng
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Koganti, Ramakrishna, Sergio Angotti, Armando Joaquin, Cindy Jiang, and Chris Karas. "Gas Metal Arc Welding (GMAW) Process Optimization for Uncoated Dual Phase 600 Material Combination With Aluminized Coated and Uncoated Boron Steels for Automotive Body Structural Applications." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-43419.

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With the increasing demand for safety, energy saving and emission reduction, Advanced High Strength Steels (AHSS) have become very attractive steels for automobile makers. The usage of AHSS steels is projected to grow significantly in the next 5–10 years as new safety and fuel economy regulations are enacted. These new steels pose significant manufacturing challenges, particularly for welding and stamping. Welding of AHSS remains one of the technical challenges in the successful application of AHSS in automobile structures, especially when durability of the welded structures is required. In th
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Xu, Chun, and Shuhui Li. "Correlation Between Strain and Exfoliating Performance of Galvannealed DP Steels." In ASME 2006 International Manufacturing Science and Engineering Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/msec2006-21021.

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The galvannealed dual-phase steels are used in automotive applications. However, galvannealed coating is often exfoliated when it is in the pressing process. Galvannealed exfoliation is examined as a function of strain state using double reserve Olsen test to simulate forming process. Distances of punch in first and second reverse Olsen tests are changed to used to generate other strain state. The circle grids are etched on sheet to measure strain. Significant exfoliating is encountered in biaxial compress strain zone while no exfoliating occurred in biaxial tensile strain zone. Exfoliating is
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Pérez, Iñaki, Maribel Arribas, Iñigo Aranguren, et al. "Processing of new dual-phase (DP) and complex-phase (CP) steels for automotive applications by tailored hot forming routes." In PROCEEDINGS OF THE 22ND INTERNATIONAL ESAFORM CONFERENCE ON MATERIAL FORMING: ESAFORM 2019. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5112724.

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Ben-Yahia, Faycal, James A. Nemes, and Farid Hassani. "Investigation of Structural and Material Effects on Crashworthiness of Advanced High Strength Steel Columns." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-55106.

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An experimental and numerical study was performed to evaluate the crashworthiness of several advanced high strength steels. The behavior of two Dual Phase (DP) steels and an HSLA steel are compared by examining the crush response of longeron column specimens, experimentally and computationally. The closed section columns, fabricated by spot welding formed channel sections, in both single hat and double hat configurations were exposed to 182 kg and 454 kg axial impacts at different velocities. Final column height and impact force history were recorded and compared with results of finite element
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Shih, Hua-Chu, and Ming F. Shi. "Die Wear and Coating Galling in Stamping Advanced High Strength Steels." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-62668.

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Advanced high strength steels (AHSS) have been widely used in vehicle structural components due to their high strength nature with balanced formability. In a typical application, a zinc coating is often required and applied to AHSS for the purpose of corrosion protection. Due to the high strength nature of AHSS, higher forming forces and binder pressures are also required in stamping AHSS, which often results in coating galling and die wear. The degree of coating galling and die wear depends upon forming process variables such as contact pressure, forming speed, lubrication and die temperature
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Shih, Hua-Chu. "Evaluation of Zinc Coating Adhesion in Stamping Advanced High Strength Steel." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-37977.

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Advanced high strength steels (AHSS) have been widely used in vehicle structural components due to their high strength properties balanced with good formability. In many applications, a zinc coating is often applied to AHSS for the corrosion protection. Due to the high strength properties of AHSS, higher forming forces and binder pressures are also required in stamping AHSS, which often results in coating powdering/flaking or galling around the draw bead and die radius areas. The degree of coating powdering/flaking depends upon forming process variables such as draw bead force, forming speed,
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Shih, Hua-Chu, Changqing Du, and Dajun Zhou. "Die Wear and Galling in Stamping DP980 Steel." In ASME 2013 International Manufacturing Science and Engineering Conference collocated with the 41st North American Manufacturing Research Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/msec2013-1142.

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Stamping of dual phase (DP) 980 steel creates higher deformation heat, contact pressure and friction force between the tooling and sheet steel. These, in turn, cause higher die wear and galling. Although various countermeasures have been adopted in production to prevent excessive wear associated with forming DP980 steel, the stamping die tryout process has not been revised accordingly to ensure that the die surfaces in contact with sheet metal have been hardened and coated. The effects of die hardness and lubrication conditions on die wear and galling in stamping DP980 steel during the die try
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Mahagaonkar, N. S., K. N. Kulkarni, V. V. Shinde, M. R. Saraf, and Lothar Issler. "Evaluation of Fatigue Properties and Effect of Stress Concentration on Fatigue Life of Dual Phase Steel Grade DP 800." In SIAT 2011. SAE International, 2011. http://dx.doi.org/10.4271/2011-26-0120.

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