Effect of scandium additions on microstructure and mechanical properties of Al-Zn-Mg alloy welds

被引：45

作者：

Dev, Selvi ^{[1
]}

Stuart, A. Archibald

Kumaar, R. C. Ravi Dev

Murty, B. S.

Rao, K. Prasad

机构：

[1] Saipem, ENI Grp, StarStroi, Sakhalin, Russia

[2] Indian Inst Technol, Madras 600036, Tamil Nadu, India

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2007年 / 467卷 / 1-2期

关键词：

Al-Zn-Mg alloy; RDE-40; scandium; GTAW; solidification cracking; mechanical properties;

D O I：

10.1016/j.msea.2007.02.080

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The microstructure and mechanical properties of fusion zones of medium strength Al-Zn-Mg alloy (RDE-40) welds obtained by using different fillers containing various amount of scandium was investigated. It was observed that addition of scandium led to very significant grain refinement in the fusion zone especially for scandium levels greater than the eutectic composition (0.55 wt%). The grain refinement led to the reduction in solidification cracking and improved the tensile properties of fusion zone compared to the ones obtained by the commercial AA5556 filler. (c) 2007 Published by Elsevier B.V.

引用

页码：132 / 138

页数：7

共 16 条

[1] Microstructural evolution and ageing behaviour of the low Cu:Mg ratio Al-Cu-Mg alloys containing scandium and lithium [J].