Microstructure of LaFe13-xSix Alloys Annealed at High Temperature for a Short Time

被引：0

作者：

Liu Tao ^{[1
]}

Chen Yungui ^{[1
]}

Tang Yongbai ^{[1
]}

Xiao Sufen ^{[1
]}

Zhang Enyao ^{[1
]}

Wang Jinwei ^{[1
]}

Tu Mingjing ^{[1
]}

机构：

[1] Sichuan Univ, Chengdu 610065, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2009年 / 38卷 / 05期

关键词：

MAGNETIC ENTROPY CHANGE; TRANSITION;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructures of the as-cast and the shortly annealed LaFe13-xSix (x=1.43, 1.56, 2.4) alloys at high temperature were investigate by X-ray diffraction, scanning electron microscope and energy dispersive spectroscopy. It was demonstrated that the microstructure of the as-cast LaFe11.570Si1.43 was characterized by dendrite grains, which contained a large amount of alpha-Fe and LaFeSi. LaFe11.44Si (1.56) had not only dendrite grains but also most amount of phases crystallized in NaZn13-type structure besides alpha-Fe and LaFeSi. The NaZn13-type structure of the as-cast LaFe10.6Si2.4 could be directly obtained and characterized by cellular grains. After annealing at 1350 degrees C for half an hour, the dendrite grains were turned into equiaxed ones, and NaZn13-type structure phases were formed as the matrix phase, with the existence of alpha-Fe and impurity phase LaFeSi.

引用

页码：887 / 890

页数：4

共 13 条

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