Effect of Solution Heat Treatment Time on a Rheocast Al-Zn-Mg-Cu Alloy

被引：10
|
作者：
Mazibuko, Nonjabuliso E. [1 ]
Curle, Ulyate A. [1 ]
机构：
[1] CSIR, ZA-0001 Pretoria, South Africa
来源：
LIGHT METALS TECHNOLOGY V | 2011年 / 690卷
关键词：
CSIR-RCS; eutectic phase; intermetallic phases; hardness; EVOLUTION;
D O I：
10.4028/www.scientific.net/MSF.690.343
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
During rheo-high pressure die casting (R-HPDC) of Al-Zn-Mg-Cu alloys a coarse eutectic phase is formed. This eutectic phase is difficult to take into solution because of its size and it would require longer solution heat treatment times. The objective of this work was to determine the time for sufficient dissolution of the eutectic phase in this Al-Zn-Mg-Cu alloy. Solution heat treatment was carried out at 473 degrees C for various time periods and the samples were quenched in water. The samples were then artificially aged at 120 degrees C for 24 hrs. A component of the eutectic was observed to have dissolved and another component transformed to new intermetallic phases for all solution heat treatment times at 473 degrees C.
引用
收藏
页码：343 / 346
页数：4
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