Interface structure of Si3N4-whisker-reinforced Al-Mg-Si alloy (Al alloy 6061) composites studied by high-resolution electron microscopy

被引：36

作者：

Jeong, HG

Hiraga, K

Mabuchi, M

Higashi, K

机构：

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

[2] UNIV OSAKA PREFECTURE,COLL ENGN,DEPT MECH SYST ENGN,SAKAI,OSAKA 591,JAPAN

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 1996年 / 74卷 / 02期

关键词：

D O I：

10.1080/095008396180425

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have studied the microstructure of Si3N4-Whisker(Si3N4w)-reinforced Al-Mg-Si alloy (Al alloy 6061) composites, some of which show high-strain-rate superplasticity, by high-resolution and analytical electron microscopy, paying particular attention to the structure of the Si3N4w-Al-matrix interfaces. In the high-strain-rate superplastic composite, which was prepared by hot extrusion after hot-press sintering, a strong reaction occurs between the Al matrix and the Si3N4w crystals, and reaction phases at their interfaces with a definite crystallographic relationship to the Si3N4w crystals are formed. On the other hand, no evidence for an interfacial reaction between the Al matrix and the Si3N4w crystals was detected in the as-sintered material which was prepared without any subsequent extrusion and which shows no superplasticity.

引用

页码：73 / 80

页数：8

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