锌锡复合合金化对镁/铝FSLW组织与性能的影响

万葛; 蔡达; 赵一帆; 沈小琨; 赵丽; 董仕节; 胡心彬

doi:10.15980/j.tzzz.2021.12.006

研究·合金性能 | 浏览量 : 0 下载量: 21 CSCD: 0

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锌锡复合合金化对镁/铝FSLW组织与性能的影响
Influence of Zn-Sn Composite Alloying on the Structure and Properties of Magnesium-aluminum FSLW
2021年41卷第12期页码：1478-1484
纸质出版日期： 2021 ，
DOI： 10.15980/j.tzzz.2021.12.006

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万葛, 蔡达, 赵一帆, 等. 锌锡复合合金化对镁/铝FSLW组织与性能的影响[J]. 特种铸造及有色合金杂志, 2021,41(12):1478-1484.

Wan Ge, Cai Da, Zhao Yifan, et al. Influence of Zn-Sn Composite Alloying on the Structure and Properties of Magnesium-aluminum FSLW[J]. Special Casting & Nonferrous Alloys, 2021,41(12):1478-1484.
万葛, 蔡达, 赵一帆, 等. 锌锡复合合金化对镁/铝FSLW组织与性能的影响[J]. 特种铸造及有色合金杂志, 2021,41(12):1478-1484. DOI： 10.15980/j.tzzz.2021.12.006.

Wan Ge, Cai Da, Zhao Yifan, et al. Influence of Zn-Sn Composite Alloying on the Structure and Properties of Magnesium-aluminum FSLW[J]. Special Casting & Nonferrous Alloys, 2021,41(12):1478-1484. DOI： 10.15980/j.tzzz.2021.12.006.

摘要

通过设计正交试验研究了添加Zn箔或Sn箔

以及Zn箔和Sn箔复合添加来进行界面合金化Mg/Al异种合金搅拌摩擦搭接试验。结果表明

进给速度对接头力学性能的影响最大

Zn箔厚度对接头力学性能的影响程度大于Sn箔。在Sn箔和Zn箔厚度均为0.05 mm、焊接速度为110 mm/min、旋转速度为750 r/min时

焊接接头的拉伸剪切强度最大。相较于单独添加Zn箔或Sn箔

复合添加的接头中脆性Mg-Al金属间化合物的含量更低

接头组织主要由Mg-Zn-Al三元相、Mg-Zn金属间化合物组成

接头力学性能比单独添加Zn或Sn时提升了35%左右。

Abstract

The orthogonal design test was used to invesitgate the process of adding zinc or tin foil

and the composite addition of zinc foil and tin foil to carry out the friction stir lap test of interfacial alloying magnesium/aluminum dissimilar alloy. The orthogonal experiment results show that the feed speed has the greatest influence on the mechanical properties of the joint

and the thickness of the zinc foil has a greater influence on the mechanical properties of the joint than that of tin foil. When the thickness of tin foil and zinc foil are both 0.05 mm

the welding speed is 110 mm/min

and the rotation speed is 750 r/min

the welded joint presents the maximum tensile shear strength. Compared with adding zinc foil or tin foil alone

the content of brittle magnesium-aluminum intermetallic compound in the joint added by composite is decreased. The joint is mainly composed of magnesium-zinc-aluminum ternary phase and magnesium-zinc intermetallic compound. The mechanical properties of the joint are about 35% higher than those of ones with zinc or tin alone.