TY - GEN
T1 - Retained austenite control and extra-cryogenic impact toughness of fe-3.0%mn low carbon steel
AU - Deng, Xiangtao
AU - Li, Xiaolin
AU - Huang, Long
AU - Wang, Zhaodong
N1 - Publisher Copyright:
© 2020 Trans Tech Publications Ltd, Switzerland.
PY - 2020
Y1 - 2020
N2 - 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 －80o C during the three-step heat treatment, and the uniform elongation could exceed at 16%.
AB - 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 －80o C during the three-step heat treatment, and the uniform elongation could exceed at 16%.
KW - Cryogenic impact toughness
KW - Intercritical heat treatment
KW - Medium manganese steel
KW - Retained austenite
UR - http://www.scopus.com/inward/record.url?scp=85087161399&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/MSF.993.520
DO - 10.4028/www.scientific.net/MSF.993.520
M3 - 会议稿件
AN - SCOPUS:85087161399
SN - 9783035715668
T3 - Materials Science Forum
SP - 520
EP - 525
BT - Functional and Functionally Structured Materials IV
A2 - Han, Yafang
PB - Trans Tech Publications Ltd
T2 - 20th Chinese Materials Conference, CMC 2019
Y2 - 10 July 2019 through 14 July 2019
ER -