图书来源:二元合金相图及中间相晶体结构 二元合金相图及中间相晶体结构
作 者:唐仁政 田荣璋
出版时间:2009-05
定 价:320元
图书ISBN:978-7-81105-831-4
出版单位:中南大学出版社
Jun Wang1),Hong-chao Kou1),Hui Chang1),Xiao-feng Gu2),Jin-shan Li1),Hong Zhong1),and Lian Zhou1) 1) State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi’an 710072,China 2) School of Information Technology,Jiangnan University,Wuxi 214122,China
摘 要:The primary crystallization of the Ti40Zr25Ni8Cu9Be18 amorphous alloy was studied by isochronal differential scanning calorimetry(DSC).The activation energy was determined by the Kissinger-Akahira-Sunose method.Trying to analyze the crystallization kinetics of the Ti40Zr25Ni8Cu9Be18 amorphous alloy by two different methods,it was found that the crystallization kinetics did not obey the Johnson-Mehl-Avrami equation.A modified method in consideration of the impingement effect was proposed to perform kinetic analysis of the isochronal crystallization of this alloy.The kinetic parameters were then obtained by the linear fitting method based on the modified kinetic equation.The results show that the isochronal crystallization kinetics of the amorphous Ti40Zr25Ni8Cu9Be18 alloy is heating rate dependent,and the discrepancy between the Johnson-Mehl-Avrami method and the modified method increases with the increase of heating rate.
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