Influence of martensite morphology on the work-hardening behavior of high strength ferrite-martensite dual-phase steel

被引：197

作者：

Das, Debdulal ^{[1
]}

Chattopadhyay, Partha Protim ^{[1
]}

机构：

[1] Bengal Engn & Sci Univ, Dept Met & Mat Engn, Sibpur 711103, Howrah, India

来源：

JOURNAL OF MATERIALS SCIENCE | 2009年 / 44卷 / 11期

关键词：

STRESS-STRAIN ANALYSIS; MECHANICAL-PROPERTIES; TENSILE PROPERTIES; DEFORMATION-BEHAVIOR; FRACTURE-BEHAVIOR; EVOLUTION;

D O I：

10.1007/s10853-009-3392-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study concerns influence of martensite morphology on the work-hardening behavior of high-strength ferrite-martensite dual-phase (DP) steel. A low-carbon microalloyed steel was subjected to intermediate quenching (IQ), step quenching (SQ), and intercritical annealing (IA) to develop different martensite morphologies, i.e., fine and fibrous, blocky and banded, and island types, respectively. Analyses of work-hardening behavior of the DP microstructures by differential Crussard-Jaoul technique have demonstrated three stages of work-hardening for IQ and IA samples, whereas the SQ sample revealed only two stages. Similar analyses by modified Crussard-Jaoul technique showed only two stages of work-hardening for all the samples. Among different treatments, IQ route has yielded the best combination of strength and ductility due to its superior work-hardening behavior. The influence of martensite morphology on nucleation and growth of microvoids/microcracks has been correlated with the observed tensile ductility.

引用

页码：2957 / 2965

页数：9

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