Ultrasonic attenuation of polycrystalline aluminum wetted with liquid gallium

被引：5

作者：

Miyagi, T. ^{[1
]}

Koizumi, H. ^{[1
]}

机构：

[1] Meiji Univ, Sch Sci & Technol, Dept Phys, Tama Ku, Kawasaki, Kanagawa 2148571, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2006年 / 442卷 / 1-2期

关键词：

aluminum; gallium; grain boundary; liquid metal embrittlement; brittle to ductile transition;

D O I：

10.1016/j.msea.2006.03.126

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Ultrasonic attenuation measurements were carried out on polycrystalline aluminum specimens that contain gallium in the grain boundaries as a function of temperature by using longitudinal waves of 10 MHz. When the specimen is cooled from 308 K to below 200 K, the attenuation exhibits a sharp drop below the melting temperature of gallium (302.9 K). In the heating process from 200 to 308 K, the attenuation shows an abrupt increase near the melting point of gallium. The change in attenuation is due to gallium in the grain boundaries and may be related to the brittle to ductile fracture transition observed for aluminum containing gallium in the grain boundaries. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：184 / 186

页数：3

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