HEAT TREATMENT OF Al-7Si-0.3Mg ALLOY PREVIOUSLY INOCULATED WITH A NEW TYPE OF QUATERNARY MASTER ALLOY

被引：0
|
作者：
Moldovan, P. [1 ]
Popescu, Gabriela [1 ]
Butu, M. [1 ]
机构：
[1] Univ Politehn Bucuresti, Dept Engn & Management Elaborat Metall Mat, Bucharest, Romania
来源：
UNIVERSITY POLITEHNICA OF BUCHAREST SCIENTIFIC BULLETIN SERIES B-CHEMISTRY AND MATERIALS SCIENCE | 2007年 / 69卷 / 02期
关键词：
heat treatment; solution treatment; artificial ageing; grain refining; modification; quality index;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The paper presents the results obtained in T6 heat treatment of Al-7Si-0.3Mg alloy, treated in liquid state with a new type of master alloy (AlTiBSr) for simultaneous grain refining and modification. The heat treatment (solution treatment at 540 degrees C/6h, water quenching, and artificial ageing) leads to improvement of structural characteristics (silicon spheroidization and grain refining) and mechanical properties (increasing of elongation, of yield strength and of the Q quality index). We remark that the results of heat treatment of Al-7Si-0.3Mg alloy refined and modified with AlTiBSr are similar to those obtained for strontium modification with AlSr10 master alloy.
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页码：91 / 98
页数：8
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