新型倾斜板技术制备A2017半固态合金

谢丰广; 管仁国; 王付兴; 刘相华

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新型倾斜板技术制备A2017半固态合金
Preparation of A2017 Semi-solid Alloy by a New Wave-like Sloping Plate Process
2008年第10期页码：766-768
纸质出版日期： 2008 ，
DOI：

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[1]谢丰广,管仁国,王付兴,刘相华.新型倾斜板技术制备A2017半固态合金[J].特种铸造及有色合金,2008(10):766-768+735.

Xie Fengguang1, Guan Renguo2, Wang Fuxing2, et al. Preparation of A2017 Semi-solid Alloy by a New Wave-like Sloping Plate Process[J]. Special Casting & Nonferrous Alloys, 2008,(10):766-768.
[1]谢丰广,管仁国,王付兴,刘相华.新型倾斜板技术制备A2017半固态合金[J].特种铸造及有色合金,2008(10):766-768+735. DOI：

Xie Fengguang1, Guan Renguo2, Wang Fuxing2, et al. Preparation of A2017 Semi-solid Alloy by a New Wave-like Sloping Plate Process[J]. Special Casting & Nonferrous Alloys, 2008,(10):766-768. DOI：

摘要

采用新型的波浪型倾斜板技术

对制备半固态A2017合金进行了研究。熔融的合金在倾斜的波浪型冷却板表面非均匀形核

并在流动与碰撞剪切的条件下生长

逐渐从粗大的等轴晶网络演化为细小的近球形晶。通过试验发现

在浇注温度为720℃、倾角为45°的条件下

选用长度为400～500mm有间隔波浪的室温倾斜板可获得细小均匀的合金组织。坯料在二次加热温度为625℃、保温时间为60min的条件下

球化理想

适合于触变成形。

Abstract

Preparation of A2017 semi-solid alloy was conducted by means of a new wave-like sloping plate method. The molten alloy was heterogeneously nucleated on surface of wave-like sloping plate and was grown in the condition of flow

collision and shearing

resulting in the gradual evolution of coarse net-work equiaxed grain into fine spheroid particle. The microstructure with fine uniform distribution in the semi-solid alloy can be successfully prepared with pouring at 720 ℃ on the interval wave-like sloping plate with length in 400

00 mm and declined angle of 45°. Furthermore

the desirable spheroidized structure suitable for thixo-forming was obtained with re-heating at 625 ℃ for 60 min.