Investigation on a new processing of semi-solid slurrying for magnesium alloy

被引：0

作者：

Le, Qi-Chi ^{[1
]}

Ou, Peng ^{[1
]}

Cui, Jian-Zhong ^{[1
]}

Lu, Gui-Min ^{[1
]}

机构：

[1] Lab. of Elec. Proc. of Mater., Ministry of Educ., Northeastern Univ., Shenyang 110004, China

来源：

| 2002年 / Northeastern University卷 / 23期

关键词：

Casting; -; Cooling; Microstructure; Refining;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The as-cast microstructures of AZ91D magnesium alloy were studied at various casting temperatures. The effects of stewing time and cooling capacity of mould on the cast structure of AZ91D alloy were investigated for near-liquidus casting processing. When the casting temperature is above the liquidus, lower temperature is favor of lightening microstructure loose, however, coarser structure is obtained. This trend continues till the upper edge of liquidus. In the contrary, near-liquidus casting promotes the microstructure refining ad rosettizing, and the microporosity is invisible. The proper stewing time enhances the refining. The dendrite fusing at certain extent promotes the rosettization, however, over-stewing is not expected. Increasing cooling rate has the similar effect on cast structure as that of increasing stewing time.

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