Observation of deformation twinning and martensitic transformation during nanoindentation of a transformation-induced plasticity steel

被引：8

作者：

Xiong, Zhiping ^{[1
]}

Casillas, Gilberto ^{[2
]}

Saleh, Ahmed A. ^{[1
]}

Cui, Shaogang ^{[1
]}

Pereloma, Elena V. ^{[1
,2
]}

机构：

[1] Univ Wollongong, Sch Mech Mat & Mechatron Engn, Wollongong, NSW 2522, Australia

[2] Univ Wollongong, Electron Microscopy Ctr, Wollongong, NSW 2519, Australia

来源：

SCIENTIFIC REPORTS | 2017年 / 7卷

基金：

澳大利亚研究理事会;

关键词：

INDIVIDUAL RETAINED AUSTENITE; MECHANICAL STABILITY; MULTIPHASE STEELS; TENSILE BEHAVIOR; TRIP; DUCTILITY; GRAINS;

D O I：

10.1038/s41598-017-17824-x

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

For the first time, deformation twinning and martensitic transformation were observed in retained austenite in a low-alloyed transformation-induced plasticity steel using nanoindentation in conjunction with electron backscattering diffraction and transmission electron microscopy. Dislocation glide, martensite formation and deformation twinning were correlated to pop-ins and deviation from linearity in the load-displacement curve. Deformation twinning was found to enhance the stability of retained austenite. This observation furthers our understanding of RA stability during straining of low-alloyed multiphase TRIP steel.

引用

页数：6

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