Effects of Second Phase Particle Dispersion on Kinetics of Isothermal Peritectic Transformation in Fe-C Alloy

被引：8
|
作者：
Chen, Liang [1 ]
Matsuura, Kiyotaka [2 ]
Sato, Daisuke [1 ]
Ohno, Munekazu [2 ]
机构：
[1] Hokkaido Univ, Grad Sch Engn, Kita Ku, Sapporo, Hokkaido 0608263, Japan
[2] Hokkaido Univ, Div Mat Sci & Engn, Fac Engn, Kita Ku, Sapporo, Hokkaido 0608263, Japan
来源：
ISIJ INTERNATIONAL | 2012年 / 52卷 / 03期
关键词：
peritectic transformation; Fe-C system; second phase particles; retarding effect; diffusion couple; multi-phase field; AUSTENITE GRAIN-STRUCTURE; LIQUID DIFFUSION COUPLE; FIELD MODEL; CARBON; GROWTH; SIMULATION; STEEL; AL;
D O I：
10.2355/isijinternational.52.434
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Effects of dispersion of insolvable particles on peritectic transformation kinetics in Fe-C binary alloy system have been investigated by means of a model experiment based on a diffusion couple method. During isothermal holding of the diffusion couple of delta and liquid phase samples, the peritectic transformation proceeds by migrations of ferrite(delta)/austenite(gamma) interface and liquid(L)/gamma interface. It was observed that the existence of insolvable particle, ZrO2, in delta phase retarded the migration of delta/gamma interface and also the migration of L/gamma interface. The retarding effect by the ZrO2 particles becomes strong as volume fraction of particles increases and/or particle radius decreases, which is qualitatively coincident with the effect of particles on grain growth (Zener pinning). These findings were verified by multi-phase field simulations.
引用
收藏
页码：434 / 440
页数：7
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