Application of Johnson-Mehl-Avrami-Kolmogorov type equation in non-isothermal phase process: Re-discussion

作者：Lei, Xuanwei; Huang, Jihua^*; Jin, Xing; Chen, Shuhai; Zhao, Xingke

来源：Materials Letters, 2016, 181: 240-243.

DOI：10.1016/j.matlet.2016.06.039

• Phase transformation
• Metals and alloys
• Kinetics
• JMAK type equation

A new non-isothermal phase kinetic equation which keeps the form of Johnson-Mehl-Avrami-Kolmogorov (JMAK) equation is established. This non-isothermal JMAK type equation is expressed as
X( t)=1 - exp[-(Kt)n], K=K-0 exp(-Q/RT0)
T-0 can be given a linear relationshi wi transformation temperature T in relatively large parameter fluctuation ranges. The applications of non-isothermal JMAK type equation in gamma ->alpha phase process of Fe 0.002 wt%C alloy under linear cooling process and welding thermal process do show its good agreements with the experimental data.

• 出版日期2016-10-15
• 单位北京科技大学