Peritectic reaction and its influences on the microstructures evolution during directional solidification of Fe-Ni alloys

被引：40

作者：

Luo, L. S. ^{[1
]}

Su, Y. Q. ^{[1
]}

Guo, J. J. ^{[1
]}

Li, X. Z. ^{[1
]}

Li, S. M. ^{[2
]}

Zhong, H. ^{[2
]}

Liu, L. ^{[2
]}

Fu, H. Z. ^{[1
,2
]}

机构：

[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China

[2] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2008年 / 461卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

directional solidification; peritectic solidification; coupled growth; Fe-Ni alloy;

D O I：

10.1016/j.jallcom.2007.07.009

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Systematic directional solidification experiments were carried out in Fe-Ni peritectic alloys to investigate the influences of peritectic reaction on the microstructures evolution. Various microstructures were observed in the directionally solidified samples, such as bands, mixed bands, island banding, tree-like oscillatory pattern, coupled and cellular coupled growth structures. It was found that peritectic reaction occurs near the trijunctions during the two-phase growth at different interface morphologies of the primary phase observed as planar, cellular and dendritic. Peritectic reaction makes the liquid/delta/gamma trijunctions region quite irregular and makes the trijunctions dynamics quite complicated, and thus plays an important role in the formation of various microstructures. (c) 2007 Elsevier B. V. All rights reserved.

引用

页码：121 / 127

页数：7

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