Effects of Al-3Ti-3B-1Y Master Alloy on the Microstructure and Mechanical Properties of Al-9Si Alloy

Zhang Na; Yu Yanjun

doi:10.15980/j.tzzz.2018.10.025

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Effects of Al-3Ti-3B-1Y Master Alloy on the Microstructure and Mechanical Properties of Al-9Si Alloy
Vol. 38, Issue 10, Pages: 1137-1139(2018)
Published： 2018 ，
DOI： 10.15980/j.tzzz.2018.10.025

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[1]张娜,于延军.Al-3Ti-3B-1Y合金对Al-9Si合金组织和性能的影响[J].特种铸造及有色合金,2018,38(10):1137-1139.

Zhang Na, Yu Yanjun. Effects of Al-3Ti-3B-1Y Master Alloy on the Microstructure and Mechanical Properties of Al-9Si Alloy. [J]. Special Casting & Nonferrous Alloys 38(10):1137-1139(2018)
[1]张娜,于延军.Al-3Ti-3B-1Y合金对Al-9Si合金组织和性能的影响[J].特种铸造及有色合金,2018,38(10):1137-1139. DOI： 10.15980/j.tzzz.2018.10.025.

Zhang Na, Yu Yanjun. Effects of Al-3Ti-3B-1Y Master Alloy on the Microstructure and Mechanical Properties of Al-9Si Alloy. [J]. Special Casting & Nonferrous Alloys 38(10):1137-1139(2018) DOI： 10.15980/j.tzzz.2018.10.025.

摘要

研究了Al-3Ti-3B-1Y中间合金对Al-9Si-0.4Mg亚共晶合金微观组织和力学性能的影响

并分析了Al-3Ti-3B-1Y中间合金的作用机理。结果表明

加入Al-3Ti-3B-1Y中间合金后

Al-9Si-0.4Mg合金中α-Al晶粒由粗大树枝晶转变为尺寸较为细小的树枝晶

晶粒得到明显细化

共晶Si由长针状转变为颗粒状。Al-9Si-0.4Mg亚共晶合金的力学性能得到明显提高。

Abstract

The effects of Al-3 Ti-3 B-1 Y master alloy on the microstructure and mechanical properties of Al-9 Si-0.4 Mg alloy were investigated

and the refinement mechanism of Al-3 Ti-3 B-1 Y master alloy was discribed.The results show that the morphology ofα-Al is changed from coarse dendrite to fine dendrite and the grain is refined obviously.Moreover

the eutectic Si phase is transformed from needle to particle shape.The mechanical properties of Al-9 Si-0.4 Mg alloy are improved significantly.