Effects of Master Alloys Prepared by Different Ways on Microstructure of A356 Alloys

Li Yazhen1; Wang Shihe2; Zhao Weimin1; Wang Zhifeng1; Fan Xueyi1; Lin Xiaoping1

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Effects of Master Alloys Prepared by Different Ways on Microstructure of A356 Alloys
Vol. 29, Issue 9, Pages: 863-866(2009)
Published： 2009 ，
DOI：

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[1]李娅珍,王士贺,赵维民,王志峰,范学义,林晓娉.不同状态中间合金对A356合金组织的影响[J].特种铸造及有色合金,2009,29(09):863-866+783.

Li Yazhen1, Wang Shihe2, Zhao Weimin1, et al. Effects of Master Alloys Prepared by Different Ways on Microstructure of A356 Alloys. [J]. Special Casting & Nonferrous Alloys 29(9):863-866(2009)
[1]李娅珍,王士贺,赵维民,王志峰,范学义,林晓娉.不同状态中间合金对A356合金组织的影响[J].特种铸造及有色合金,2009,29(09):863-866+783. DOI：

Li Yazhen1, Wang Shihe2, Zhao Weimin1, et al. Effects of Master Alloys Prepared by Different Ways on Microstructure of A356 Alloys. [J]. Special Casting & Nonferrous Alloys 29(9):863-866(2009) DOI：

摘要

分别采用空气、冰水和液氮3种不同冷却方式制备了Al-4Ti-B和Al-10Sr中间合金

通过3组对比试验分析了不同冷却方式Al-4Ti-B中间合金和Al-10Sr中间合金对A356细化和变质效果的差异。结果表明

同时添加液氮深冷处理的Al-4Ti-B和Al-10Sr中间合金对A356铝合金的细化变质效果最好

α-Al晶粒变为细小等轴晶

共晶硅相变得更加细小圆整

且在α-Al基体中分布更加均匀。

Abstract

Al-4Ti-B master alloy and Al-10Sr master alloy were prepared in condition of air

ice-water and liquid nitrogen. The refinement and modification effects of Al-4Ti-B and Al-10Sr master alloys at different cooling ways on the A356 alloy were comparatively analyzed. The results reveal that desirable refinement and modification effects on the A356 aluminum alloy can be observed by modification with liquid nitrogen treatment Al-4Ti-B and Al-10Sr master alloy

in which α-Al phase is converted into fine equiaxed grain with occurrence of spheroidized refining eutectic phase and the more uniformly distribution in the α-Al phase.