Effects of Self-inoculation Method on Microstructure of ZL101 Alloy

Zhang Peng1; Li Yuandong1; Qu Junfeng1; Xing Bo1

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Effects of Self-inoculation Method on Microstructure of ZL101 Alloy
Vol. 30, Issue 5, Pages: 417-420(2010)
Published： 2010 ，
DOI：

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[1]张鹏,李元东,曲俊峰,邢博.自孕育流变铸造对ZL101合金组织的影响[J].特种铸造及有色合金,2010,30(05):417-420+386.

Zhang Peng1, Li Yuandong1, Qu Junfeng1, et al. Effects of Self-inoculation Method on Microstructure of ZL101 Alloy. [J]. Special Casting & Nonferrous Alloys 30(5):417-420(2010)
[1]张鹏,李元东,曲俊峰,邢博.自孕育流变铸造对ZL101合金组织的影响[J].特种铸造及有色合金,2010,30(05):417-420+386. DOI：

Zhang Peng1, Li Yuandong1, Qu Junfeng1, et al. Effects of Self-inoculation Method on Microstructure of ZL101 Alloy. [J]. Special Casting & Nonferrous Alloys 30(5):417-420(2010) DOI：

摘要

采用新型自孕育流变铸造法

研究了自孕育流变铸造法及熔体处理温度对ZL101合金组织的影响。结果表明

自孕育流变铸造能有效细化组织

晶粒尺寸主要分布在25～49μm范围内

平均等效圆直径为37μm。熔体处理温度为710℃时孕育剂加入量为5%

导流器倾斜角为45°时达到最好细化效果。经分析认为

孕育剂的加入促进了初生α-Al相的形核

而导流器的剪切和激冷作用促使树枝晶破碎形成新的形核质点

两方面的作用使金属凝固时存在大量的晶核

从而细化了组织。

Abstract

Effects of self-inoculation method （SIM） and melt treated temperature on as-cast microstructure of ZL101 semi-solid slurry prepared by a novel self-inoculation rheoforming method were investigated.The results show that grain with 25～49 μm in size and 37 μm in average equivalent spherical diameters can be observed in self-inoculated ZL101 alloy slurry.The desirable refinement can be obtained in the alloy slurry with 5% self-inoculators addition at 710 ℃ by flowing on the deflector with 45°.Inoculator addition can promote the nucleation of primary α-Al

and shearing and chilling effects of deflector can generate new nuclei by broking dendrite

which results in the increase of grain size during alloy solidification

greatly refining grain size in the alloy slurry.