Isothermal Aging Kinetics in CuZnAl Shape Memory Alloy

被引：0
|
作者：
Zengqi ZHAO Lab.of Physics
机构：
来源：
Journal of Materials Science & Technology | 1993年 / 03期
关键词：
isothermal aging kinetics; CuZnAl alloy; shape memory; bainitic transformation; activation energy;
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学科分类号：
摘要：
Isothermal aging behaviours of a CuZnAl shape memory alloy have been investigated by means ofdilatometry.The length of the specimens during isothermal aging from 190 to 280℃ increases withthe aging time at each temperature.The isothermal aging kinetics fits in Avrami equation and thetime exponent n decreases with the increase in aging temperature.The apparent activation energyfor the isothermal aging process was measured to be 109.0kJ/mol,which is about equal to that of arelaxation internal friction peak at about 200℃ (f≈1 Hz) in the alloy.
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页码：172 / 176
页数：5
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