Computer simulation for the effect of coherent strain on the precipitation progress of binary alloy

作     者：卢艳丽 陈铮 王永欣 

作者机构：Dept. of Materials Science and Engineering Northwestern Polytechnical University 

基　　金：Sponsored by the National Natural Science Foundation of China (Grant No.50071046) the National Hi-Tech Research and Development Program ofChina (Grant No.2002AA331051) 

出 版 物：《Journal of Harbin Institute of Technology(New Series)》 (哈尔滨工业大学学报（英文版）)

年 卷 期：2007年第14卷第5期

页      码：634-640页

摘      要：Based on the microscopic elasticity theory and microscopic diffusion equation, the precipitation progress of the binary alloys including coherent strain energy was studied. The results show that coherent strain has obvious effect on the coherent two-phase morphology and precipitation mechanism. With the increase of coherent strain energy, the particles shape changes from the randomly distributed equiaxed particels to elliptical precipitate shapes,their arrangement orientation increases; in the late stage of precipitation, the particle arrangement presents obvious directionality along the [10]and[01]directions, and the precipitation mechanism of alloy changes from typical spinodal decomposition mechanism to the mixture process which possesses the characteristics of both non-classical nucleation growth and spinodal decomposition mechanisms.

主 题 词：金属 变形过程 强度 压力 计算机技术 设计方案 

学科分类：0810[工学-土木类] 07[理学] 070205[070205] 0805[工学-能源动力学] 0812[工学-测绘类] 0702[理学-物理学类] 

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