PARTIAL MELTING AND SEGREGATION BEHAVIOR IN A SUPERPLASTIC SI3N4/AL-MG ALLOY COMPOSITE

被引：57

作者：

KOIKE, J

MABUCHI, M

HIGASHI, K

机构：

[1] OREGON STATE UNIV,DEPT MECH ENGN,CORVALLIS,OR 97331

[2] NATL IND RES INST NAGOYA,KITA KU,NAGOYA 462,JAPAN

[3] UNIV OSAKA PREFECTURE,COLL ENGN,DEPT MECH SYST ENGN,SAKAI,OSAKA 593,JAPAN

来源：

JOURNAL OF MATERIALS RESEARCH | 1995年 / 10卷 / 01期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1557/JMR.1995.0133

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Al-Mg alloy (5052) composite reinforced with Si3N4 particulates was investigated by transmission electron microscopy and electron energy loss spectroscopy. Partial melting was observed at matrix/reinforcement interfaces and matrix grain boundaries at a temperature near an optimum superplastic temperature. Segregation of solute elements (Mg and Si) was observed at the interfaces and grain boundaries. Both partial melting and solute segregation were found to depend on grain boundaries. The obtained results were explained by a decrease of the solidus temperature due to segregation whose extent depends on the type of the grain boundary structure.

引用

页码：133 / 138

页数：6

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