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
收藏
页数：6
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