Thermal behaviors of Al-based amorphous alloys bearing nanocrystalline In particles

被引：9
|
作者：
Mu, J. [1 ,2 ]
Zhu, Z. W. [1 ]
Zhang, H. F. [1 ]
Hu, Z. Q. [1 ]
Wang, Y. D. [3 ]
Ren, Y. [4 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
[3] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China
[4] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA
来源：
ACTA MATERIALIA | 2010年 / 58卷 / 19期
基金：
中国国家自然科学基金;
关键词：
Melt-spinning; Nanocrystalline materials; Interface structure; Melting behavior; Crystallization; BULK METALLIC GLASSES; MECHANICAL-PROPERTIES; MELTING BEHAVIOR; EMBEDDED NANOPARTICLES; COMPRESSIVE PLASTICITY; MATRIX COMPOSITES; PB PARTICLES; TEMPERATURE; ALUMINUM; CRYSTALLIZATION;
D O I：
10.1016/j.actamat.2010.07.048
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We successfully fabricated nanocrystalline (NC) indium (In) particles embedded in Al-based amorphous matrix. Systematic investigations indicate that thermal interaction between the NC In and the amorphous matrix significantly influences their respective thermal behaviors. The melting temperature of NC In was found to be depressed by 10-30 K, owing to the specific interfacial structure of NC In/amorphous system. The simultaneous appearance of the liquid/amorphous interface destabilizes the amorphous matrix, leading to face-centered cubic-Al precipitation at the interface of In sphere/amorphous matrix at a relatively lower temperature. This effect is attributed to the diffusion of La from the matrix to the liquid In particles. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：6267 / 6275
页数：9
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