1 and the end temperature Ac3are raised with rare earth addition. The activation energy can be increased by 186 kJ/mol, and the value of kinetic factor n is decreased. The austenitic transformation process of without addition and addition rare earth 30Mn steel have been described as two stages, and different stages have different grain growth mechanism."/>
[Yan Honghong, Hu Yong, Zhao Dawen, LI Yongtang. Effect of rare earth addition on austenitizing process of 30Mn steel[J]. Rare Metal Materials and Engineering,2017,46(7):1912~1919.]
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