Microstructure and tensile properties of thixo-diecast AZ91D magnesium alloy

被引：0

作者：

Ai Xiulan ^{[1
]}

Quan Gaofeng ^{[2
]}

Liu Zhaoming ^{[1
]}

Gao Hong ^{[1
]}

机构：

[1] Liaoning Province Laboratory of Key Material for Railway, Dalian Jiaotong University

[2] School of Material Science and Engineering, Southwest Jiaotong University

来源：

China Foundry | 2013年 / 10卷 / 05期

关键词：

D O I：

暂无

中图分类号：

TG292 [轻金属铸造];

学科分类号：

080201 ; 080503 ;

摘要：

The thixo-diecasting(TDC)process is the combination of semi-solid billet preparation technology and die casting technology.The TDC process not only keeps the characteristics of thixo-forming but also has high efficiency and low cost.In the present work,the microstructures and mechanical properties of an AZ91D magnesium alloy prepared by the thixo-diecasting(TDC)process were characterized in as-cast condition.The TDC alloy produced exhibits a unique microstructure containingα-Mg solid solution andβ-Mg17Al12intermetallic compound,and there are some small droplets and a small gray globule with eutectic structure in the primaryα-Mg grains.The ultimate tensile strength and elongation of the TDC alloy also increase in comparison with other processes,such as thixocasting.Fracture surface observation shows that a crack mainly originates from the brittle fracture of the eutectic phases.The deformation of ductileα-Mg phase provides the TDC alloy with the main strain.

引用

页码：288 / 293

页数：6

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