Effect of Cast-Forge Integrated Forming and Aging Treatment on Microstructure and Mechanical Properties of AZ91D Magnesium Alloy

Qi Dongliang; Cao Hanxue; Yang Huaide; Zhu Silong; Hao Tingting

doi:10.15980/j.tzzz.2014.04.023

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Effect of Cast-Forge Integrated Forming and Aging Treatment on Microstructure and Mechanical Properties of AZ91D Magnesium Alloy
Vol. 34, Issue 4, Pages: 394-397(2014)
Published： 2014 ，
DOI： 10.15980/j.tzzz.2014.04.023

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[1]齐冬亮,曹韩学,杨怀德,朱思龙,郝婷婷.铸锻复合成形及时效对AZ91D合金组织和性能的影响[J].特种铸造及有色合金,2014,34(04):394-397.

Qi Dongliang, Cao Hanxue, Yang Huaide, et al. Effect of Cast-Forge Integrated Forming and Aging Treatment on Microstructure and Mechanical Properties of AZ91D Magnesium Alloy. [J]. Special Casting & Nonferrous Alloys 34(4):394-397(2014)
[1]齐冬亮,曹韩学,杨怀德,朱思龙,郝婷婷.铸锻复合成形及时效对AZ91D合金组织和性能的影响[J].特种铸造及有色合金,2014,34(04):394-397. DOI： 10.15980/j.tzzz.2014.04.023.

Qi Dongliang, Cao Hanxue, Yang Huaide, et al. Effect of Cast-Forge Integrated Forming and Aging Treatment on Microstructure and Mechanical Properties of AZ91D Magnesium Alloy. [J]. Special Casting & Nonferrous Alloys 34(4):394-397(2014) DOI： 10.15980/j.tzzz.2014.04.023.

摘要

采用挤压铸造和铸锻复合成形方法生产汽车转向控制臂

研究了铸锻复合成形及后续时效对AZ91D镁合金组织和性能的影响。结果表明

铸锻复合成形后

合金发生再结晶

制件组织细化

控制臂受力部位的抗拉强度、屈服强度、硬度和伸长率较挤压铸造都有所提高。经时效处理后

抗拉强度、屈服强度和硬度进一步提高

但伸长率有所下降。

Abstract

The auto-steering control-arm was produced by squeeze casting and by casting-forging integrated forming

respectively

and effects of casting-forging forming and aging treatment on microstructure and properties of AZ91D magnesium alloy were analyzed.The results show that the microstructure of casting-forging auto steering control-arm is refined as a result of recystallization

and tensile strength

yield strength

hardness and elongation are superior to those in squeezing casting.After aging treatment

tensile strength

yield strength and hardness of the control arm are further increased

while elongation is slightly decreased.