Effects of Different Degassing Methods on Hydrogen Content and Mechanical Properties of AZ91 Magnesium Alloy

Jia Zheng; Yu Bing; Wang Zhizhuo; Yu Yongzhi; Han Xu; Yan Liyuan; Song Jingyi; Liu Xin; Pan Peng

doi:10.15980/j.tzzz.2021.08.011

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Effects of Different Degassing Methods on Hydrogen Content and Mechanical Properties of AZ91 Magnesium Alloy
Vol. 41, Issue 8, Pages: 982-987(2021)
Published： 2021 ，
DOI： 10.15980/j.tzzz.2021.08.011

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Jia Zheng, Yu Bing, Wang Zhizhuo, et al. Effects of Different Degassing Methods on Hydrogen Content and Mechanical Properties of AZ91 Magnesium Alloy. [J]. Special Casting & Nonferrous Alloys 41(8):982-987(2021)
DOI：

Jia Zheng, Yu Bing, Wang Zhizhuo, et al. Effects of Different Degassing Methods on Hydrogen Content and Mechanical Properties of AZ91 Magnesium Alloy. [J]. Special Casting & Nonferrous Alloys 41(8):982-987(2021) DOI： 10.15980/j.tzzz.2021.08.011.

摘要

研究了C

除气、超声除气、熔剂除气及氩气除气4种方法对AZ91镁合金氢含量及力学性能的影响。结果表明

氩气除气效果最佳

每100 g镁中氢含量可减少到7.3 cm

。对应的抗拉强度为200 MPa

屈服强度为128 MPa

伸长率为5.2%。研究了氢含量与合金力学性能的相关性

结果表明

每100 g镁中氢含量低于11 cm

时

进一步除氢对AZ91镁合金力学性能的影响不明显。

Abstract

The effects of C

ultrasonic

flux and argon degassing on hydrogen content and mechanical properties of AZ91 magnesium alloy were investigated. The results show that argon has the satisfeid hydrogen removal effect

where the hydrogen content can be decreased to 7.3 cm

/100 g. The corresponding tensile strength

yield strength and elongation reach 200 MPa

128 MPa and 5.2%

respectively

at room temperature. Meanwhile

the effects of hydrogen content on the mechanical properties of AZ91 magnesium alloy were investigated. When the hydrogen content in AZ91 alloy is less than 11 cm

/100 g

further degassing of hydrogen content has little effect on mechanical properties.