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Characterizing DP-steels using micromechanical modeling of cells
Computational Materials Science, 2007Dual phase (DP) steels having a microstructure consisting of martensite dispersed in a softer matrix called ferrite have received colossal attention due to their appealing combination of high strength, high work hardening rate and good ductility, which are favorable properties especially for forming processes.
F.M. Al-Abbasi, James A. Nemes
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Micromechanical modeling of fatigue behavior of DP steels
Materials Science and Engineering: A, 2017Abstract The effect of martensitic phase fraction on the cyclic stress-strain behavior of two DP steels is investigated via a micromechanical model based on a representative volume element (RVE). A dislocation density based model and a Chaboche hardening model are used to identify the isotropic and kinematic hardening behavior of constituent phases ...
Ghazal Moeini +3 more
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Characterization and modelling of failure initiation in DP steel
Computational Materials Science, 2013This work aims to study the failure initiation in dual-phase (DP) steel. A microstructure based approach using representative volume elements (RVEs) is utilized to evaluate the microstructure deformation and the failure initiation on the mesoscale.
A. Ramazani +4 more
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The Microstructure and Formability Study on DP Steel of Lightweight Automobile
Materials Science Forum, 2011Dual phase (DP) steel is a high strength steel for auto-panel. In this paper, mechanical property, forming ability, baked-hardening and work hardening properties of high strength steel DP450 are studied by experiments, and compared with those of steel MS6000.And theoretical research on predicting the forming limit of steel DP450 by the NADDRG model ...
Jin Wu +4 more
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Precipitation Characterization and Mechanical Behavior in Novel DP Steels
Materials Science Forum, 2018Dual precipitates of carbide and copper particles formed within Cu-Ti microalloyed DP (Dual Phase) steel in the present study. The precipitation behaviors of tiny precipitates, especially in the ferrite matrix, were checked precisely by several methods, such as optical microscopy, high resolution transmission electron microscopy, and hardness testing ...
Chih Yuan Chen +5 more
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The Effect of Cooling Rate on the Damage Micromechanisms of DP Steels
Materials Science Forum, 2010The microstructural failure mechanisms of two DP steel sheets cooled with different cooling rates during their heat treatment are compared in the present study. The as-cold rolled DP steel sheets were annealed at intercritical temperature and cooled down with rates of 45°C/s (quenching) and 2 °C/s (slow cooling). Uniaxial tensile tests were carried out
Orlando León-García +2 more
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Study on Microstructure and Formability of DP Steel of Lightweight Automobile
Applied Mechanics and Materials, 2013Dual phase (DP) steel is a high strength steel for auto-panel. In this paper, mechanical property, forming ability of high strength steel DP450 are studied by experiments and compared with those of steel MS6000. And theoretical research on predicting the forming limit of steel DP450 by the NADDRG model.
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Failure of DP and TRIP steel sheets in different deformation modes
AIP Conference Proceedings, 2019Advanced high strength steel (AHSS) sheets have gained major attention from research groups across the world especially in last two decades. The exact description of the forming behavior of these steels has several challenges associated with it.
Barnwal, Vivek K. +2 more
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Micromechanical Characterization of Ductile Damage in DP Steel
Weight minimization triggered the automotive industry to introduce new advanced high strength steels that show ductile fracture by microvoid evolution under deformation, resulting in unexpected failure without significant necking. Therefore, an extensive study was initiated to gain insight on the formation and development of microstructural damage in ...Hoefnagels, J. +3 more
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Evaluation of the Effects of Inclusion Distribution on the Local Ductility of DP Steel
Materials Science Forum, 2012In the present study, the effects of inclusions on the local ductility of DP steel are investigated using finite element analysis (FEA). In order to evaluate local ductility, a continuum damage mechanics (CDM) model has been incorporated into the Abaqus/Explicit® commercial finite element code.
Y. Suwa +4 more
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