Microstructural changes in a mechanically alloyed Al-6.2Zn-2.5Mg-1.7Cu alloy (7010) with and without particulate SiC reinforcement

被引：18

作者：

Bhaduri, A ^{[1
]}

Gopinathan, V ^{[1
]}

Ramakrishnan, P ^{[1
]}

Miodownik, AP ^{[1
]}

机构：

[1] UNIV SURREY,DEPT MAT SCI & ENGN,GUILDFORD GU2 5XH,SURREY,ENGLAND

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1996年 / 27卷 / 11期

关键词：

D O I：

10.1007/BF02595463

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Elemental powders of Al, Zn, Mg, and Cu (corresponding to the composition of 7010 aluminium alloy) were milled in a high-energy attritor with and without additions of SiC particulates. The microstructural changes taking place in the milled powders (which eventually lead to mechanical alloying) are found to be retarded by SiC additions. High-resolution techniques such as electron probe microanalysis (EPMA) and transmission electron microscopy/energy-dispersive X-ray analysis (TEM/EDX) revealed the presence of localized. solute-rich regions long after the diffraction line from these solutes had ceased to appear in the X-ray diffractograms, Zinc appears to be more difficult to be mechanically alloyed into aluminum than either Cu or Mg in spite of its comparatively larger diffusivity in aluminum.

引用

页码：3718 / 3726

页数：9

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