期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
奥氏体/铁素体层状条带结构高锰钢的微观组织及其性能 被引量:4
1
作者 朱恺 伍翠兰 +4 位作者 谢盼 韩梅 刘元瑞 张香阁 陈江华 《金属学报》 SCIE EI CAS CSCD 北大核心 2018年第10期1387-1398,共12页
采用XRD、SEM、TEM、EBSD、EPMA等表征手段及硬度测试和拉伸实验研究了Mn12Ni2MoTi(Al)钢经过形变热处理后的微观组织及其性能。结果表明,Mn12Ni2MoTi(Al)钢经过65%冷轧及745℃两相区退火处理后,其横截面形成了由奥氏体层和铁素体层交... 采用XRD、SEM、TEM、EBSD、EPMA等表征手段及硬度测试和拉伸实验研究了Mn12Ni2MoTi(Al)钢经过形变热处理后的微观组织及其性能。结果表明,Mn12Ni2MoTi(Al)钢经过65%冷轧及745℃两相区退火处理后,其横截面形成了由奥氏体层和铁素体层交替排列的层状条带组织,每个条带均由晶体取向相近的亚微米等轴晶组成;奥氏体条带中含有少量的铁素体晶粒,同样铁素体条带中含有少量的奥氏体晶粒。这种奥氏体/铁素体层状条带结构中的奥氏体晶粒具有黄铜型{110}<112>和Goss型{110}<001>织构,铁素体晶粒主要为旋转立方型{001}<110>和立方型{001}<100>织构。随着退火时间的延长,层状条带特征先增强然后逐渐减弱直至消失,同时奥氏体织构由黄铜型织构逐渐向Goss型织构演化。当材料具有层状条带组织时,同时具有高屈服强度和良好延伸率;当层状条带组织消失时,其屈服强度大幅度下降的同时延伸率也下降。 展开更多
关键词 层状结构 高锰钢 形变热处理 TRIP效应
原文传递
Positive Strain Rate Sensitivity and Deformation Behavior of a Fe–29Mn–3Al–3Si TWIP Steel 被引量:1
2
作者 Shucheng Shen Cuilan Wu +1 位作者 Pan Xie yuanrui liu 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2022年第11期1825-1836,共12页
The Fe-29 Mn-3 Al-3 Si twin-induced plasticity(TWIP)steel is used to conduct quasi-static compression and dynamic impact deformation with strain rates ranging from 8.3×10^(-4) to 3800 s^(-1).The microstructures a... The Fe-29 Mn-3 Al-3 Si twin-induced plasticity(TWIP)steel is used to conduct quasi-static compression and dynamic impact deformation with strain rates ranging from 8.3×10^(-4) to 3800 s^(-1).The microstructures and properties of deformed samples under different strain rates were investigated comparatively.These results show that positive strain rate sensitivity was observed with the increase in strain rates and that there was a significant difference in strain rate sensitivity factor(m)between quasi-static compression(m=0.029)and dynamic impact deformation(m=0.190).Compared to the quasi-static compression,the dynamic impact deformation exhibited higher yield strength.Microstructural examination reveals that the primary twins were frequently found during the quasi-static compression process,and the secondary twins were rarely observed.However,the secondary and multi-fold deformation twins were florescent in the dynamic impact samples.At the initial stage of dynamic impact deformation,partial dislocations and staking faults on multiple conjugate{111}planes were simultaneously activated and produced a large number of Lomer-Cottrell dislocations,resulting in a large increase in yield strength during dynamic impact. 展开更多
关键词 TWIP steel Dynamic deformation Strain rate sensitivity Multi-fold deformation twins
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部