二元合金体系形变过程中Kirkendall空洞形貌演化和生长动力学的晶体相场法研究

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Bibliographic Details
Published in	中国有色金属学报：英文版 Vol. 27; no. 3; pp. 599 - 607
Main Author	马文婧;柯常波;梁水保;周敏波;张新平
Format	Journal Article
Language	English
Published	2017
Subjects	Kirkendall空洞;二元合金;晶体相场方法;生长指数;形变
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ISSN	1003-6326

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Bibliography:	Kirkendall void; binary alloy; phase field crystal method; growth exponent; deformation 43-1239/TG The formation and growth of Kirkendall voids in a binary alloy system during deformation process were investigated byphase field crystal model.The simulation results show that Kirkendall voids nucleate preferentially at the interface,and the averagesize of the voids increases with both the time and strain rate.There is an obvious coalescence of the voids at a large strain rate whenthe deformation is applied along the interface under both constant and cyclic strain rate conditions.For the cyclic strain rate appliedalong the interface,the growth exponent of Kirkendall voids increases with increasing the strain rate when the strain rate is largerthan1.0×10-6,while it increases initially and then decreases when the strain rate is smaller than9.0×10?7.The growth exponent ofKirkendall voids increases initially and then decreases gradually with increasing the length of cyclic period under a square-waveform constant strain rate.
ISSN:	1003-6326