进给速度对铜界面合金化镁/铝FSW组织与性能的影响

郑博; 邓威; 王彦辉; 赵丽; 董仕节; 付开武; 胡心彬

doi:10.15980/j.tzzz.2018.11.009

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进给速度对铜界面合金化镁/铝FSW组织与性能的影响
Influence of Feed Speed on the Microstructure and Mechanical Properties of the Magnesium-Aluminum Interface Alloying Joint with Cu Foil by Friction Stir Welding
2018年38卷第11期页码：1193-1197
纸质出版日期： 2018 ，
DOI： 10.15980/j.tzzz.2018.11.009

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[1]郑博,邓威,王彦辉,赵丽,董仕节,付开武,胡心彬.进给速度对铜界面合金化镁/铝FSW组织与性能的影响[J].特种铸造及有色合金,2018,38(11):1193-1197.

Zheng Bo, Deng Wei, Wang Yanhui, et al. Influence of Feed Speed on the Microstructure and Mechanical Properties of the Magnesium-Aluminum Interface Alloying Joint with Cu Foil by Friction Stir Welding[J]. Special Casting & Nonferrous Alloys, 2018,38(11):1193-1197.
[1]郑博,邓威,王彦辉,赵丽,董仕节,付开武,胡心彬.进给速度对铜界面合金化镁/铝FSW组织与性能的影响[J].特种铸造及有色合金,2018,38(11):1193-1197. DOI： 10.15980/j.tzzz.2018.11.009.

Zheng Bo, Deng Wei, Wang Yanhui, et al. Influence of Feed Speed on the Microstructure and Mechanical Properties of the Magnesium-Aluminum Interface Alloying Joint with Cu Foil by Friction Stir Welding[J]. Special Casting & Nonferrous Alloys, 2018,38(11):1193-1197. DOI： 10.15980/j.tzzz.2018.11.009.

摘要

研究了不同进给速度对AZ31B镁合金/5052铝合金铜界面合金化搅拌摩擦焊焊接接头组织与性能的影响。结果表明

在进给速度为200mm/min时接头的抗拉强度最低

在进给速度为100mm/min和300mm/min时焊缝的抗拉强度较好;随着添加铜箔的厚度增加

焊接接头的抗拉强度先增加后降低。在进给速度为100mm/min

铜箔厚度为0.05mm

旋转速度为1 200r/min时能得到良好的焊接接头

其最大抗拉强度为87.5 MPa;加入铜箔后

接头处生成了Mg

、Mg

、AlCu、Al

Cu、MgCu

相

无明显焊接缺陷

硬度分布近似成"M"形。

Abstract

The effects of varied feed speed on the microstructure and properties of AZ31B magnesium alloy/5052 aluminum alloy interface alloyed friction stir welding joints with Cu foil were investigated.The results reveal that the tensile strength of the joint presents the lowest value with the feed speed of 200mm/min

and it is satisfied with 100mm/min and 300mm/min.As the thickness of the added copper foil increase

the tensile strength of welded joint is increased firstly and then decreased.With the feeding speed of 100mm/min

the 0.05mm thickness of copper foil and the rotation speed of 1 200r/min

the desirable welding joints can be obtained

and the maximum tensile strength can reach 87.5 MPa.With the copper foil

AlCu

Cu and MgCu

phases are generated at the joint junction without obvious welding defects

and hardness distribution shows approximately’M’shape.