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Effect of rare earth addition on austenitizing process of 30Mn steel
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School of Mechanical Engineering,Taiyuan University of Science and Technology,,,

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    Abstract:

    Continuous heating tests of without addition and addition rare earth 30Mn steel were investigated by using differential scanning calorimetry (DSC). The transformation activation energy and kinetic factor were obtained by Kissinger and JMA equation. The results show that the values of the starting temperature Ac1 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.

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[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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History
  • Received:June 21,2016
  • Revised:November 08,2016
  • Adopted:December 02,2016
  • Online: November 14,2017

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