A380铝合金半固态坯料二次加热工艺及组织演变

汪尹雄; 路贵民; 王姣姣

doi:10.15980/j.tzzz.2014.12.015

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A380铝合金半固态坯料二次加热工艺及组织演变
Microstructure Evolution of Semi-solid A380 Aluminum Alloy During Reheating Process
2014年34卷第12期页码：1284-1288
纸质出版日期： 2014 ，
DOI： 10.15980/j.tzzz.2014.12.015

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[1]汪尹雄,路贵民,王姣姣.A380铝合金半固态坯料二次加热工艺及组织演变[J].特种铸造及有色合金,2014,34(12):1284-1288.

Wang Yinxiong, Lu Guimin, Wang Jiaojiao. Microstructure Evolution of Semi-solid A380 Aluminum Alloy During Reheating Process[J]. Special Casting & Nonferrous Alloys, 2014,34(12):1284-1288.
[1]汪尹雄,路贵民,王姣姣.A380铝合金半固态坯料二次加热工艺及组织演变[J].特种铸造及有色合金,2014,34(12):1284-1288. DOI： 10.15980/j.tzzz.2014.12.015.

Wang Yinxiong, Lu Guimin, Wang Jiaojiao. Microstructure Evolution of Semi-solid A380 Aluminum Alloy During Reheating Process[J]. Special Casting & Nonferrous Alloys, 2014,34(12):1284-1288. DOI： 10.15980/j.tzzz.2014.12.015.

摘要

研究了近液相线铸造A380铝合金在563、573及583℃保温5

0min的二次加热工艺条件下的组织演变。结果表明

随着保温温度的升高和保温时间的延长

晶粒平均等积圆直径增加

晶粒圆整度降低

温度越高

变化的趋势越快。半固态坯料加热温度为583℃

保温时间为20min时

能够获得较好的二次加热组织。此时

晶粒平均等积圆直径为49.74μm

晶粒平均圆整度为1.75。

Abstract

The microstructure evolution of near-liquidus casting A380 aluminum alloy with the reheating temperature at 563

573

583 ℃ and holding time for 5

0 min was investigated.The results show that

with the increase of reheating temperature and holding time

the average grain diameter is increased gradually with the roundness value decreases

and with temperature increase

the changes tendency is accelerated.The optimum microstructure with the average grain diameter of 49.74μm and roundness value of 1.75 can be obtained with the reheating temperature at 583℃and holding time for 20 min.