Effects of Al-5Ti-1B Master Alloy on Microstructure and Properties of AZ31 Magnesium Alloy

Qi Guohong; Fang Canfeng; Hao Hai; Zhang Xingguo

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Effects of Al-5Ti-1B Master Alloy on Microstructure and Properties of AZ31 Magnesium Alloy
Vol. 30, Issue 3, Pages: 266-269(2010)
Published： 2010 ，
DOI：

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[1]齐国红,房灿峰,郝海,张兴国.Al-5Ti-1B对AZ31合金组织与性能的影响[J].特种铸造及有色合金,2010,30(03):266-269+194.

Qi Guohong, Fang Canfeng, Hao Hai, et al. Effects of Al-5Ti-1B Master Alloy on Microstructure and Properties of AZ31 Magnesium Alloy. [J]. Special Casting & Nonferrous Alloys 30(3):266-269(2010)
[1]齐国红,房灿峰,郝海,张兴国.Al-5Ti-1B对AZ31合金组织与性能的影响[J].特种铸造及有色合金,2010,30(03):266-269+194. DOI：

Qi Guohong, Fang Canfeng, Hao Hai, et al. Effects of Al-5Ti-1B Master Alloy on Microstructure and Properties of AZ31 Magnesium Alloy. [J]. Special Casting & Nonferrous Alloys 30(3):266-269(2010) DOI：

摘要

研究了Al-5Ti-1B中间合金不同添加量对AZ31镁合金显微组织和力学性能的影响。结果表明

在AZ31镁合金中添加Al-5Ti-1B中间合金有利于组织性能的改善。在试验中

添加量控制在0.5%为佳

此时

合金晶粒尺寸达到最小

约为170μm

是AZ31镁合金未添加细化剂时晶粒尺寸的30%

抗拉强度及伸长率分别达到最大。AZ31镁合金组织性能的变化主要与Al-5Ti-1B中间合金中的游离Ti和TiB2有关。

Abstract

Effects of different Al-5Ti-1B master alloy additions on microstructure and mechanical properties of AZ31 magnesium alloy were investigated.It is found that microstructure and mechanical properties of the AZ31 magnesium alloy are greatly improved with Al-5Ti-1B master alloy addition

and desirable microstructure and properties can be observed in the alloy with 0.5% Al-5Ti-1B addition

where the minimum average grain size that is approximately 30% of average grain size of AZ31 alloy is observed and tensile strength and elongation reach up to 184MPa and 8.14%

respectively.Improvement of microstructure and properties of AZ31 magnesium alloy is related with free Ti and TiB2 particles in Al-5Ti-1B master alloy.