APFIM INVESTIGATION OF FINE-SCALE PRECIPITATION IN ALUMINUM-ALLOY 6061

被引：58

作者：

EDWARDS, GA

STILLER, K

DUNLOP, GL

机构：

[1] CHALMERS UNIV TECHNOL,DEPT PHYS,S-41296 GOTHENBURG,SWEDEN

[2] UNIV QUEENSLAND,DEPT MIN & MET ENGN,BRISBANE,QLD 4000,AUSTRALIA

来源：

APPLIED SURFACE SCIENCE | 1994年 / 76卷 / 1-4期

关键词：

D O I：

10.1016/0169-4332(94)90346-8

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The results of an APFIM investigation of precipitation during ageing of aluminium alloy 6061 at 70-degrees-C and 175-degrees-C are presented. The first, stage of precipitation was found to involve the separate clustering of Si atoms and Mg atoms. This was closely followed by movement of Mg atoms to the Si clusters. The Mg: Si ratio in these small precipitates increased slowly during ageing at 70-degrees-C and more rapidly during ageing at 175-degrees-C, with most precipitates attaining a Mg:Si ratio of close to one at both temperatures. A needle-shaped precipitate formed during ageing for 24 h at 175-degrees-C was also found to have a Mg:Si ratio of close to one.

引用

页码：219 / 225

页数：7

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