Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 5    No. 1    March 1995

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OSTWALD COARSENING UNDER CHANGING VOLUME FRACTION CONDITION
Zhao Jiuzhou ;Guo Jingjie ;Jia Jun Li; Qingchun

College of Materials Science and Engineering; Harbin institute of Technology; Harbin 15000l

Abstract:The mathematical model describing the Ostwald coarsening of the second phase particle in decreasing temperature process(the volume fraction of the second phase changes) have been put forward ,and calculations have been carried out for the liquid-liquid phase transformation of Zn-pb alloy. It was found that this model is in good accordance with LSW theory when the cooling rate is zero. With the increase of the cooling rate, the critical particle size decreases, and the coarsening rate of particle increases.

 

Key words: Ostwald coarsening; second phase; volume fraction

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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