AZ91D-RE-xCa镁合金挤压管件组织及性能

于宝义; 李毓英; 宋洪武; 袁晓光; 刘正

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AZ91D-RE-xCa镁合金挤压管件组织及性能
Microstructure and Mechanical Properties of AZ91D-RE-xCa Mg Alloy Extruded Tube
2006年第9期页码：565-567
纸质出版日期： 2006 ，
DOI：

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[1]于宝义,李毓英,宋洪武,袁晓光,刘正.AZ91D-RE-xCa镁合金挤压管件组织及性能[J].特种铸造及有色合金,2006(09):565-567+533.

Yu Baoyi, Li Yuying, Song Hongwu, et al. Microstructure and Mechanical Properties of AZ91D-RE-xCa Mg Alloy Extruded Tube[J]. Special Casting & Nonferrous Alloys, 2006,(9):565-567.
[1]于宝义,李毓英,宋洪武,袁晓光,刘正.AZ91D-RE-xCa镁合金挤压管件组织及性能[J].特种铸造及有色合金,2006(09):565-567+533. DOI：

Yu Baoyi, Li Yuying, Song Hongwu, et al. Microstructure and Mechanical Properties of AZ91D-RE-xCa Mg Alloy Extruded Tube[J]. Special Casting & Nonferrous Alloys, 2006,(9):565-567. DOI：

摘要

研究了镁合金AZ91D加入混合RE及Ca进行合金化后的AZ91D-RE-xCa（x=0.5、1.0、1.5）镁合金挤压管件的显微组织、室温及高温（150℃和200℃）力学性能。结果表明

合金化之后的镁合金挤压管件高温性能得到了显著的提高。在200℃时

钙含量（质量分数）为0.5%时

σb为225.2MPa

σ0.2为179.3MPa

δ为5.3%

好于同等试验条件下的镁合金AZ91D管件。

Abstract

Microstructure

mechanical properties of AZ91D-RE-xCa Mg alloy extruded tube at ambient and high temperatures were investigated. It was revealed that the mechanical properties of the alloyed Mg alloy extruded tube at a high temperature can be significantly improved. The optimized mechanical properties of the Mg alloy extruded tube with 0.5% Ca content

including tensile strength of 225.2 MPa

yield strength of 179.3 MPa and elongation of 5.3%

at a high temperature of 200 ℃ can be obtained

which is superior to those of AZ91D Mg alloy extruded tube at the same experimental conditions.