Achieving high property medium-thick Ti/Al dissimilar joints by double side friction stir welding

被引：20
作者：
Li, Y. [1 ]
Shi, L. [1 ]
Wu, C. S. [1 ]
Jiang, Y. N. [1 ]
机构：
[1] Shandong Univ, MOE Key Lab Liquid Solid Struct Evolut & Mat Proc, Inst Mat Joining, Jinan, Peoples R China
来源：
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING | 2022年 / 27卷 / 08期
关键词：
Ti; Al dissimilar alloys; double side friction stir welding; intermetallic compounds (IMCs); rotation speed; microstructure; mechanical properties; MECHANICAL-PROPERTIES; ALUMINUM-ALLOY; INTERFACIAL MICROSTRUCTURE; TI-6AL-4V ALLOY; TITANIUM-ALLOY; WELDED-JOINT; TI; PARAMETERS; EVOLUTION; BEHAVIOR;
D O I：
10.1080/13621718.2022.2106019
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Double side friction stir welding (DS-FSW) was used to join TC4 titanium alloy and 2024-T4 aluminium alloy having dissimilar medium-thick plates with a thickness of 8 mm. The microstructure and mechanical properties in medium-thick Ti/Al dissimilar DS-FSW joints were systematically studied. It revealed that the diffusion-type Ti/Al interface was mainly formed when the rotating speed is low. While intermetallic compounds layers were formed at the Ti/Al interface due to the high welding temperature and intense mechanical mixing at a relatively high rotating speed. The maximum tensile strength of medium-thick Ti/Al dissimilar DS-FSW joint is 265 MPa achieved at the rotation speed of 300 rev min(-1), which is 58.9% of the base material of 2024-T4 aluminium alloy.
引用
收藏
页码：655 / 663
页数：9
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