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

页码：434 / 440

页数：7

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