The Effect of Sintering Temperature to the Microstructure and Properties of AZ91 Magnesium Alloy by Powder Metallurgy

被引：13

作者：

Zhou, Yajun ^{[1
]}

Jiang, Aiyun ^{[1
]}

Liu, Jianxiu ^{[2
]}

机构：

[1] Huanghe Sci & Technol Coll, Zhengzhou 450063, Peoples R China

[2] Zhengzhou Univ Light Ind, Zhengzhou 450002, Peoples R China

来源：

ADVANCES ON MATERIALS ENGINEERING | 2013年 / 377卷

关键词：

AZ91 magnesium alloys; powder metallurgy; sintering temperature; microstructure; properties;

D O I：

10.4028/www.scientific.net/AMM.377.250

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

AZ91 magnesium alloy was fabricated by powder metallurgy. The effects of sintering temperature on the relative density, hardness and tensile strength were investigated. The microstructure of the material was observed by scanning electron microscopy (SEM) and Energy Disperse Spectroscopy (EDS). The study found that the best sintering temperature is 550 degrees C under the vacuum hotpressing, and at this sintering temperature the relative density can reach to 98.3%. SEM and EDS show that the sintering microstructure of the alloy is composed of alpha-Mg solid solution and the second phase beta-Mg17Al12. Under the 550 degrees C sintering temperature, Volume diffusion is the mainly sintering form, and produced more beta-Mg17Al12 which is dispersively distributed on the grain boundary, and improves the hardness of alloy by second-phase strength.

引用

页码：250 / +

页数：3

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