Influence of strain rate on the activation of {110}, {112}, {123} slip in ferrite of DP800

被引：12

作者：

Tian, Chunhua ^{[1
]}

Dehm, Gerhard ^{[1
]}

Kirchlechner, Christoph ^{[1
,2
]}

机构：

[1] Max Planck Inst Eisenforsch GmbH, D-40237 Dusseldorf, Germany

[2] Karlsruhe Inst Technol, Inst Appl Mat, D-76344 Eggenstein Leopoldshafen, Germany

来源：

MATERIALIA | 2021年 / 15卷

关键词：

Pillar compression; Ferrite; Slip plane families; Strain rate sensitivity; Schmid's law; Peierl's process;

D O I：

10.1016/j.mtla.2020.100983

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have performed micro pillar compression to investigate the influence of strain rate on the activation of three slip plane families, namely {110}, {112} and {123}, in ferrite of a dual phase steel. The critical resolved shear stress of all three slip plane families rises with increased strain rate. The strain rate sensitivity drops with increasing strain. Increasing strain rate does not reduce the number of activated slip systems, instead resulting in slip plane activation outside of that predicted by Schmid ' s law. The activation volume of 13b(3) to 16b(3) suggests that the Peierl's process is the rate controlling mechanism in ferrite of DP800.

引用

页数：5

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