The effect of alloying additions on vacancy behaviour in aluminium-copper alloys

被引：3

作者：

Kratzer, Terence

Gable, Brian M.

Nairn, Kate M.

Bastow, Timothy J.

Muddle, Barry C.

Hill, Anita J.

机构：

[1] CSIRO Mfg & Infrastruct Technol, Clayton, Vic 3169, Australia

[2] RMIT Univ, Sch Appl Phys, Melbourne, Vic 3000, Australia

[3] Monash Univ, Dept Mat Engn, Clayton, Vic 3800, Australia

[4] Monash Univ, Sch Chem, Clayton, Vic 3800, Australia

来源：

ALUMINIUM ALLOYS 2006, PTS 1 AND 2: RESEARCH THROUGH INNOVATION AND TECHNOLOGY | 2006年 / 519-521卷

关键词：

positron annihilation; Al-Cu-Mg-Ag alloys; silicon additions; vacancy concentration;

D O I：

10.4028/www.scientific.net/MSF.519-521.597

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of Si additions on vacancy behavior following solution treatment and quenching was studied for an Al-Cu-Mg-Ag alloy system using positron annihilation lifetime spectroscopy (PALS). Both the initial positron lifetime and steady state positron lifetime increase as the Si concentration increases. This behavior is interpreted in terms of Si interacting with vacancies, leading to their retention in the alloy. The ability of PALS to monitor vacancy behavior after solution treatment should allow the improved prediction of phase transformation kinetics and hence the tailoring of ageing treatments.

引用

页码：597 / 602

页数：6

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