Effects of Squeeze Casting on the Microstructure and Mechanical Properties of High Zinc Magnesium Alloy

doi:10.15980/j.tzzz.2020.10.004

Views : 0 下载量: 123 CSCD: 0

Export
Share
Collection
Album

Effects of Squeeze Casting on the Microstructure and Mechanical Properties of High Zinc Magnesium Alloy
Vol. 40, Issue 10, Pages: 1062-1066(2020)
Published： 2020 ，
DOI： 10.15980/j.tzzz.2020.10.004

扫描看全文

[1]王杰,周吉学,唐守秋,高恩志.挤压铸造对高锌镁合金组织与力学性能的影响[J].特种铸造及有色合金,2020,40(10):1062-1066.

Effects of Squeeze Casting on the Microstructure and Mechanical Properties of High Zinc Magnesium Alloy. [J]. Special Casting & Nonferrous Alloys 40(10):1062-1066(2020)
[1]王杰,周吉学,唐守秋,高恩志.挤压铸造对高锌镁合金组织与力学性能的影响[J].特种铸造及有色合金,2020,40(10):1062-1066. DOI： 10.15980/j.tzzz.2020.10.004.

Effects of Squeeze Casting on the Microstructure and Mechanical Properties of High Zinc Magnesium Alloy. [J]. Special Casting & Nonferrous Alloys 40(10):1062-1066(2020) DOI： 10.15980/j.tzzz.2020.10.004.

摘要

以高锌Mg-14Zn-3Al镁合金为研究对象

利用OM、XRD和SEM等研究了挤压铸造工艺对Mg-14Zn-3Al镁合金的显微组织、铸造缺陷和力学性能的影响。结果表明

挤压铸造Mg-14Zn-3Al合金的显微组织由α-Mg基体、长块状τ-Mg

（Al

Zn）

相、颗粒状或骨骼状的ε-MgZn相组成。随着挤压铸造压力不断增加

合金组织得到细化

第二相的数量增多

显微缩松得到抑制

铸件中的缩松面积从15.67%急剧减少到0.81%。经过挤压铸造处理后

Mg-14Zn-3Al合金的抗拉强度、伸长率分别达到218.1 MPa、5.2%

合金的力学性能得到明显改善。

Abstract

The influence of squeeze casting on the microstructure

casting defects and mechanical properties of Mg-14Zn-3Al was investigated by OM

XRD and SEM.The results show that the microstructure of as-squeezed Mg-14Zn-3Al alloy is composed ofα-Mg matrix

long blockτ-Mg32（Al

Zn）49 phase and granular or skeleton-likeε-MgZn phase.With the increase of the squeeze pressure

the microstructure of the alloy is refined and the quantity of the second phase is increased.Meanwhile

the casting defects in the alloy are inhibited

whose area fraction in the casting is sharply reduced from 15.67% to 0.81%.After squeeze casting treatment

the tensile strength and elongation of Mg-14Zn-3Al alloy can reach 218.1 MPa and 5.2%

respectively

which are much higher than those of gravity casting（192.6 MPa

1.2%）.

关键词

Mg-Zn-Al合金挤压铸造微观组织缩松缺陷力学性能

Keywords

Mg-Zn-Al AlloySqueeze CastingMicrostructurePorosityMechanical Properties

references

Alert me when the article has been cited

提交

Effects of Gradient Heating Mould on Microstructure and Mechanical Properties of the Hollow Al-Zn-Mg-Cu Alloy Drive Shaft Produced by Squeeze Casting

Microstructure and Properties of Squeeze Casting Commercial Aluminum Alloys

Effects of Squeezing Melt Temperature on Microstructure and Mechanical Properties of Al-5.0Cu-0.6Mn-0.5Fe Alloy Prepared by Squeeze Casting

Research Progress in High Performance Squeeze Cast Aluminum Alloys

Effects of Single/Double Size SiC_p on Microstructure and Properties of AZ91D Alloy