Crystallographic orientation-dependent dislocations slip during tensile testing of lath martensitic steel

被引：3
作者：
Wang, Y. B. [1 ]
Zhao, F. [1 ]
Xu, F. H. [2 ]
Liang, Y. L. [1 ]
Lei, L. [3 ]
Yang, M. [1 ]
Long, S. L. [4 ]
机构：
[1] Guizhou Univ, Sch Mat & Met, Guiyang 550025, Peoples R China
[2] Guizhou Special Equipment Inspect & Testing Inst, Guiyang 550025, Peoples R China
[3] Yangtze Univ, Sch Phys & Optoelect Engn, Jingzhou 434023, Peoples R China
[4] Guizhou Inst Technol, Sch Mech Engn, Guiyang 550003, Peoples R China
来源：
MATERIALS LETTERS | 2023年 / 353卷
关键词：
In-situ EBSD; Multi-level microstructure; Martensite; Microstructure; Dislocation slip; Deformation compatibility; TEMPERATURE; TOUGHNESS;
D O I：
10.1016/j.matlet.2023.135231
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Based on observations of slip traces and variant-pair boundaries obtained through the transformation of the Kurdjumov-Sachs (K-S) orientation relationship from quasi in-situ electron backscatter diffraction (EBSD), the corresponding slip systems, Schmid factors (SF), and geometric compatibility parameter (m') around the crack were calculated during tensile testing of lath martensitic steel. The occurrence of slip transfer, which typically happens at low values of m' or SF, resulted in stress concentration on crystallographic orientations of 50.5 degrees, 60 degrees, and twin-related orientations. However, more effective slip transfer and plastic deformation were observed at 20 degrees due to larger m' and SF values.
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页数：5
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