冷轧0.10C5Mn2Al钢在10 2/s应变速率下的超塑性研究

特殊钢 ›› 2020, Vol. 41 ›› Issue (5): 55-59.

冷轧0.10C5Mn2Al钢在10 2/s应变速率下的超塑性研究

刘思涵，王存宇，王昌，徐海峰，曹文全

钢铁研究总院，北京100081

收稿日期:2020-04-15 出版日期:2020-10-01 发布日期:2022-05-06
作者简介:刘思涵( 1995-).女，硕士生.2017年北京理工大学毕业，中保汽车钢超塑性研究。
基金资助:
国家自然科学基金资助(51871062)

A Study on Superplasticity of Cold Rolling 0.10C5Mn2Al Steel at Strain Rate 10 ~2 /s

Liu Sihan, Wang Cunyu , Wang Chang, Xu Haifeng ， Cao Wenquan

Institute for Special Steels, Central Iron and Steel Research Institute, Beijing 100081

Received:2020-04-15 Published:2020-10-01 Online:2022-05-06

摘要/Abstract

摘要： 对0.10C5Mnn2Al钢在750～850℃,10^-2/s的应变速率下进行高温拉伸试验及组织结构表征。研究结果表明,0.10C5Mn2Al钢在750℃,800℃、850℃下,10^-2/s的应变速率下的伸长率分别为320%、570%和730%,均获得了超塑性的现象,在超塑性变形过程中,由于变形和高温的共同作用导致了奥氏体和铁素体晶粒均长大,其中变形是导致晶粒长大的主要原因。

关键词: 冷轧中锰钢, 超塑性, 高温拉伸, 高应变速率

Abstract: The high temperature tensile test and microstructure characterization of 0.10C5Mn2Al steel with strain rates 10 ^-2/s at 750 ~ 850 ℃ are carried out. The results show that the elongation of 0.10C5Mn2AI steel strain rate 10 ^-2/s at 750 °C ,800 °C and 850 ℃ is 320% ,570% and 730% respectively to obtain superplasticity. In the process of superplastic deformation, both austenite and ferrite grains grow due to the combination of deformation and high temperature and the reformation is the main cause of grain growth.

刘思涵, 王存宇, 王昌, 徐海峰, 曹文全. 冷轧0.10C5Mn2Al钢在10 2/s应变速率下的超塑性研究[J]. 特殊钢, 2020, 41(5): 55-59.

Liu Sihan, Wang Cunyu , Wang Chang, Xu Haifeng , Cao Wenquan. A Study on Superplasticity of Cold Rolling 0.10C5Mn2Al Steel at Strain Rate 10 ~2 /s[J]. Special Steel, 2020, 41(5): 55-59.

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