AlSi9Mg合金在近液相线区保温过程中枝晶组织的演变

弭光宝; 薛克敏; 张早明; 王清瑞

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AlSi9Mg合金在近液相线区保温过程中枝晶组织的演变
Microstructural Evolution of Al-Si Alloy above Liquidus Temperature during Holding Temperature
2006年第5期页码：285-287
纸质出版日期： 2006 ，
DOI：

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[1]弭光宝,薛克敏,张早明,王清瑞.AlSi9Mg合金在近液相线区保温过程中枝晶组织的演变[J].特种铸造及有色合金,2006(05):285-287+254.

Mi Guangbao, Xue Kemin, Zhang Zaoming, et al. Microstructural Evolution of Al-Si Alloy above Liquidus Temperature during Holding Temperature[J]. Special Casting & Nonferrous Alloys, 2006,(5):285-287.
[1]弭光宝,薛克敏,张早明,王清瑞.AlSi9Mg合金在近液相线区保温过程中枝晶组织的演变[J].特种铸造及有色合金,2006(05):285-287+254. DOI：

Mi Guangbao, Xue Kemin, Zhang Zaoming, et al. Microstructural Evolution of Al-Si Alloy above Liquidus Temperature during Holding Temperature[J]. Special Casting & Nonferrous Alloys, 2006,(5):285-287. DOI：

摘要

采用AlSi9Mg合金为试验原料

通过改变、控制浇注温度和半固态保温时间

研究了在近液相线区不同温度、不同保温时间下半固态合金的组织演变规律及成因。结果表明:随着保温时间的延长

合金固相显微组织逐渐从最初的树枝晶经蔷薇状形态向颗粒状晶粒转变。在605℃保温30～40min时

得到的细小、均匀、圆整的颗粒状非枝晶组织

满足半固态加工要求。

Abstract

Effects of pouring!temperature and holding time on microstructural evolution of semi-solid AlSi9Mg magnesium alloy were analyzed. It is found that with increasing in holding time

microstructure is converted from dendrite to rosette and then to spheroidized grain. The required fine and uniform spheroidized non-dendrite microstructure can be created with holding time for 30

0 min at 605℃.