Superior strain-hardening by deformation-induced nano-HCP martensite in Fe-Mn-Si-C high-manganese steel

被引：19
|
作者：
Xiong, Renlong [1 ,3 ]
Peng, Huabei [2 ]
Zhang, Tuanwei [3 ]
Bae, Jae Wung [3 ]
Kim, Hyoung Seop [3 ]
Wen, Yuhua [2 ]
机构：
[1] Wuhan Inst Technol, Sch Mech & Elect Engn, Wuhan 430205, Peoples R China
[2] Sichuan Univ, Sch Mech Engn, Chengdu 610065, Peoples R China
[3] POSTECH Pohang Univ Sci & Technol, Dept Mat Sci & Engn, Pohang 37673, South Korea
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2021年 / 824卷 / 824期
基金：
新加坡国家研究基金会; 中国国家自然科学基金;
关键词：
High-manganese steel; Strain-hardening; Crystallography; Mechanical twinning; Deformation-induced HCP martensite; STACKING-FAULT ENERGY; INDUCED PLASTICITY STEELS; CARBON CONTENT; MECHANICAL-PROPERTIES; TENSILE PROPERTIES; HIGH-STRENGTH; TRANSFORMATION; AL; MICROSTRUCTURE; EVOLUTION;
D O I：
10.1016/j.msea.2021.141864
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We propose that high strain-hardening in face-centered cubic (FCC) crystals containing interstitial atoms could be achieved through the formation of nanoscale hexagonal close-packed (HCP) martensite with severe lattice distortions. Our experimental results showed that carbon atoms could more effectively prevent the HCP martensite from thickening and result in the formation of nano-HCP martensite. This caused a higher strainhardening rate in FeMnSiC steel with heavy carbon than in FeMnSiCrNi steel with trace carbon though the HCP martensite transformation kinetics was almost the same in these two steels.
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页数：6
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