Effects of Sr Element on Microstructure and Mechanical Properties of Mg-Zn-Y Alloy

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Effects of Sr Element on Microstructure and Mechanical Properties of Mg-Zn-Y Alloy
Vol. 37, Issue 9, Pages: 1034-1036(2017)
Published： 2017 ，
DOI： 10.15980/j.tzzz.2017.09.028

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[1]占维,胡鹏鹤,金帆,江泽南,张磊.Sr对Mg-Zn-Y合金组织和力学性能的影响[J].特种铸造及有色合金,2017,37(09):1034-1036.

Zhan Wei, Hu Penghe, Jin Fan, et al. Effects of Sr Element on Microstructure and Mechanical Properties of Mg-Zn-Y Alloy. [J]. Special Casting & Nonferrous Alloys 37(9):1034-1036(2017)
[1]占维,胡鹏鹤,金帆,江泽南,张磊.Sr对Mg-Zn-Y合金组织和力学性能的影响[J].特种铸造及有色合金,2017,37(09):1034-1036. DOI： 10.15980/j.tzzz.2017.09.028.

Zhan Wei, Hu Penghe, Jin Fan, et al. Effects of Sr Element on Microstructure and Mechanical Properties of Mg-Zn-Y Alloy. [J]. Special Casting & Nonferrous Alloys 37(9):1034-1036(2017) DOI： 10.15980/j.tzzz.2017.09.028.

在Mg93Zn6Y合金中添加Sr元素

考察了添加量对合金凝固组织和力学性能的影响。结果表明

添加Sr对组织中的初生α-Mg相和第二相均具有细化效果。随着Sr添加量的增加

合金的平均晶粒尺寸由1 190μm逐渐减小到360μm。同时

第二相逐渐细化

其局部团聚现象也得到明显改善。随着Sr添加量的增加

合金的力学性能逐渐提高。当添加0.4%的Sr时

合金的抗拉强度和伸长率分别为191 MPa和3.8%

相比未添加Sr的合金提高了43.6%和90.0%。

Effects of Sr element on the microstructure and mechanical properties of Mg

Y alloy were investigated.The results show that with the increase of Sr addition

the grain size of primaryα-Mg phase in the alloy is decreased gradually from 1 190μm to 360μm.Meanwhile

secondary phase is refined gradually with the improvement of partial segregation.With increasing in Sr addition

the tensile strength and elongation of Mg

Y alloy are increased.With 0.4% Sr addition

the tensile strength and elongation of the alloy reach up to 191 MPa and 3.8%

increased by 43.6%and 90.0%

respectively

compared with those of the unrefined alloy.

Sr元素Mg93Zn6Y合金组织力学性能

Sr ElementMg93Zn6Y AlloyMicrostructureMechanical Properties

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