Lattice Structures of AlSc and Their Effect on Interdiffusion

被引：1

作者：

Li, Juan ^{[1
]}

Ye, Feng ^{[1
]}

Huang, Li ^{[1
]}

Liang, Yongfeng ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, State Key Larboratory Adv Met & Mat, Beijing 100083, Peoples R China

来源：

HIGH PERFORMANCE STRUCTURE MATERIALS | 2013年 / 747-748卷

关键词：

AlSc; B2; Orthorhombic; Diffusion couple; SC; SYSTEM; SCANDIUM;

D O I：

10.4028/www.scientific.net/MSF.747-748.9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The structures of AlSc with 50at.% and 55at.% Sc were investigated. It was shown that orthorhombic AlSc is formed at Sc 50at.%, and B2 AlSc at Sc 55at.%. After anealing above 1100 degrees C, the orthorhombic AlSc transited into B2 structure, which indicated that B2 AlSc can also be a metalstable phase in the alloy with Sc less than 50at.%. The effects of these two structures on the phases formation via inter-diffusion were also studied using diffusion couple with titanium and gamma-TiAl. It was found that the interdiffusion coefficients are the main factors for Ti/AlSc and structures are the main factors for gamma-TiAl/AlSc.

引用

页码：9 / 13

页数：5

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