Real microstructure based micromechanical model to simulate microstructural level deformation behavior and failure initiation in DP 590 steel

被引：95
|
作者：
Paul, Surajit Kumar [1 ]
机构：
[1] Tata Steel Ltd, Res & Dev, Jamshedpur 831001, Bihar, India
来源：
MATERIALS & DESIGN | 2013年 / 44卷
关键词：
Dual phase steel; Strain partitioning; Strain localization; Damage; Volume expansion of martensite; Failure modes; DUAL-PHASE STEELS; TENSILE PROPERTIES; DUCTILE FRACTURE; TRIP STEELS; MARTENSITE; STRAIN; PREDICTION; PLASTICITY; MORPHOLOGY; EVOLUTION;
D O I：
10.1016/j.matdes.2012.08.023
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Dual phase (DP) steels having a microstructure consists of a ferrite matrix, in which particles of martensite are dispersed, have received a great deal of attention due to their useful combination of high strength, high work hardening rate and ductility. In the present work, a microstructure based micromechanical model is developed to capture the deformation behavior, plastic strain localization and plastic instability of DP 590 steel. A microstructure based approach by means of representative volume element (RVE) is employed for this purpose. Dislocation based model is implemented to predict the flow behavior of the single phases. Plastic strain localization which arises due to incompatible deformation between the hard martensite and soft ferrite phases is predicted for DP 590 steel. Different failure modes arise from plastic strain localization in DP 590 steel are investigated on the actual microstructure by finite element method. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：397 / 406
页数：10
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