A model for determining initial dislocation-densities associated with martensitic transformations

被引：30

作者：

Hatem, T. M. ^{[1
]}

Zikry, M. A. ^{[1
]}

机构：

[1] N Carolina State Univ, Dept Mech & Aerosp Engn, Raleigh, NC 27695 USA

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2011年 / 27卷 / 10期

关键词：

Martensitic phase transformation; Martensitic steel; Dislocation-densities; Finite element analysis; LATH MARTENSITE; PLASTICITY; MECHANISMS; MULTISLIP; CRYSTALS; ALLOYS;

D O I：

10.1179/1743284711Y.0000000079

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A three-dimensional multiple-slip dislocation-density-based crystal plasticity formulation, and specialised finite element formulations were used to determine the initial dislocation-densities associated with martensitic transformations in steel alloys. The analysis is based on modelling the shear part from the phenomenological theory of martensitic transformation to obtain both the transformation mobile and immobile dislocation-densities. The model was validated with experiments related to the transformation of lath martensite in high-strength low-alloying steels.

引用

页码：1570 / 1573

页数：4

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