近液相线铸造6063铝合金二次加热组织

李赫; 路贵民; 崔建忠

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近液相线铸造6063铝合金二次加热组织
Reheating Analysis of 6063 Aluminum Alloy by Near-Liquidus Casting
2007年第S1期页码：364-367
纸质出版：2007
DOI：
稿件说明：

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[1]李赫,路贵民,崔建忠.近液相线铸造6063铝合金二次加热组织[J].特种铸造及有色合金,2007(S1):364-367. DOI：

Li He Lu Guimin Cui Jianzhong. Reheating Analysis of 6063 Aluminum Alloy by Near-Liquidus Casting[J]. Special Casting & Nonferrous Alloys, 2007, (S1): 364-367. DOI：

摘要

研究了近液相线铸造6063合金锭坯在半固态二次加热过程中的组织变化。结果表明

在固液两相区内

随着加热温度的升高

α相的生长和球化速度变快。本试验中

二次加热的最佳工艺制度为630℃下保温30min

或者640℃下保温25min

此时液相体积分数为23%左右

晶粒平均等级圆直径为160μm左右。

Abstract

The change of the structure of 6063 aluminum alloy by near-liquiduscasting during reheated was studied. It is found that growth and globe rate of αphase were increased with the reheating temperature in solid-liquid phase zone. The best technical parameters of reheating is 630 ℃ at 30 minutesor 640 ℃ at 25 minutes. Under these conditions

its volume fraction of liquid is about 23%

and the Average equal-area-circle grain diameter is about 160 μm.