Retained Austenite Control and Extra-Cryogenic Impact Toughness of Fe-3.0%Mn Low Carbon Steel
Retained Austenite Control and Extra-Cryogenic Impact Toughness of Fe-3.0%Mn Low Carbon Steel
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保留%20奥氏体%20控制%20和%20超低温%20冲击%20韧性%20%20Fe-3.0%Mn%20低%20碳%20钢
DOI:
10.4028/www.scientific.net/msf.993.520
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发表时间:
2020-05
期刊:
影响因子:
--
通讯作者:
Zhao Dong Wang
中科院分区:
文献类型:
--
作者:
Xiang Tao Deng;Xiao Lin Li;Long Huang;Zhao Dong Wang
The control of the retained austenite in Fe-3.0%Mn Low carbon steel by a three-step intercritical heat treatment and the low-temperature impact toughness evolution during the process were analyzed in the present study. The results indicated that the microstructure consisted intercritical ferrite, martensite/bainite and retained austenite. The distribution of carbon and manganese could improve the stability of the austenite located at the grain boundaries of prior austenite and lath boundaries of martensite. For the TRIP effect of the austenite, the excellent plasticity and low temperature toughness was obtained. The impact toughness could reach 200 J (impact energy) at -80 °C during the three-step heat treatment, and the uniform elongation could exceed at 16%.
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