Sb对Mg-6Al合金显微组织及其焊丝力学性能的影响

高洪吾; 胡晓菊; 李长茂; 刘黎明; 刘顺华

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Sb对Mg-6Al合金显微组织及其焊丝力学性能的影响
Effects of Sb on Microstructure and Mechanical Properties of Mg-6Al Alloy Welding Wire
2004年第3期页码：19-21
纸质出版日期： 2004 ，
DOI：

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[1]高洪吾,胡晓菊,李长茂,刘黎明,刘顺华.Sb对Mg-6Al合金显微组织及其焊丝力学性能的影响[J].特种铸造及有色合金,2004(03):19-21+74.

Gao Hongwu Hu Xiaoju Li Changmao Liu Liming Liu Shunhua. Effects of Sb on Microstructure and Mechanical Properties of Mg-6Al Alloy Welding Wire[J]. Special Casting & Nonferrous Alloys, 2004,(3):19-21.
[1]高洪吾,胡晓菊,李长茂,刘黎明,刘顺华.Sb对Mg-6Al合金显微组织及其焊丝力学性能的影响[J].特种铸造及有色合金,2004(03):19-21+74. DOI：

Gao Hongwu Hu Xiaoju Li Changmao Liu Liming Liu Shunhua. Effects of Sb on Microstructure and Mechanical Properties of Mg-6Al Alloy Welding Wire[J]. Special Casting & Nonferrous Alloys, 2004,(3):19-21. DOI：

摘要

研究了合金元素Sb对Mg 6Al合金的铸态显微组织及热挤压镁合金焊丝力学性能的影响。研究结果表明

Sb对Mg 6Al合金的铸态组织有明显的细化作用

细化了α Mg晶粒和Mg17Al12 相

Sb与元素Mg形成短棒状的金属间化合物Mg3 Sb2

该相在α Mg晶粒内和晶界均有分布。当添加质量分数为 1.0 %的Sb时

合金铸态组织的细化效果最为显著。另外

添加合金元素Sb

对提高Mg 6Al合金焊丝的力学性能有显著效果

当加入质量分数为 1.0 %的Sb时

焊丝的抗拉强度σb 最高

为 3 3 4.6MPa

伸长率δ为 14 .5 4%

与Mg 6Al相比

σb与δ分别提高 61%与 3 7%。

Abstract

Effects of Sb on as-cast microstructure of Mg-6Al alloy and mechanical properties of its welding wire in hot extruding were examined. It is found that Sb can obviously refine α-Mg grain and Mg

17Al

12 phase in as-cast microstructure of Mg-6Al alloy. Short rod-like intermetallic compound Mg

generated as a result of Sb combination with Mg was uniformly distributed in α-Mg grain and grain boundary.1% Sb addition can most remarkably refine as-cast microstructure and significantly improve the ultimate tensile strength σ

（334.6 MPa） and the elongation δ（14.54%） of Mg-6Al alloy welding wire which was increased by 61% and by 37% respectively compared with conventional Mg-6Al alloy.