Critical role of strain partitioning and deformation twinning on cracking phenomenon occurring during cold rolling of two duplex medium manganese steels

被引：52

作者：

Sun, Binhan ^{[1
]}

Fazeli, Fateh ^{[2
]}

Scott, Colin ^{[2
]}

Yan, Xiaojun ^{[3
]}

Liu, Zhiwei ^{[3
]}

Qin, Xiaoyu ^{[3
]}

Yue, Stephen ^{[1
]}

机构：

[1] McGill Univ, Dept Mat Engn, 3610 Univ St, Montreal, PQ H3A 0C5, Canada

[2] Nat Resources Canada, CanmetMAT, 183 Longwood Rd South, Hamilton, ON L8P 0A5, Canada

[3] Beihang Univ, Sch Energy & Power Engn, 37 XueYuan St, Beijing 100191, Peoples R China

来源：

SCRIPTA MATERIALIA | 2017年 / 130卷

关键词：

Rolling; Medium Mn steels; Twinning; Martensitic phase transformation; Strain partitioning; DUAL-PHASE STEELS; INDUCED PLASTICITY STEEL; LOW-CARBON STEELS; GRAIN-SIZE; TRANSFORMATION BEHAVIOR; MECHANICAL-BEHAVIOR; BRITTLE TRANSITION; TENSILE PROPERTIES; TRIP STEEL; SILICON;

D O I：

10.1016/j.scriptamat.2016.11.009

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Two ferrite-austenite duplex medium manganese steels with very similar phase fractions and grain sizes were subjected to cold rolling. The 10Mn steel presented a much better cold rollability compared with the 7Mn steel, which is believed to stem from two critical factors. Firstly, the larger strain partitioning in the 10Mn steel resulted in a less deformation accommodated by the brittle delta-ferrite, which delayed or even inhibited micro crack formation inside the ferrite phase. Secondly, the deformation twinning activated in the austenite of the 10Mn steel during rolling effectively enhanced the ductility of the austenite-martensite (gamma-alpha') mixed phase. Crown Copyright (C) 2016 Published by Elsevier Ltd on behalf of Acta Materialia Inc. All rights reserved.

引用

页码：49 / 53

页数：5

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