Achieving high property medium-thick Ti/Al dissimilar joints by double side friction stir welding.
- Resource Type
- Article
- Authors
- Li, Y.; Shi, L.; Wu, C. S.; Jiang, Y. N.
- Source
- Science & Technology of Welding & Joining. Nov2022, Vol. 27 Issue 8, p655-663. 9p.
- Subject
- *FRICTION stir welding
*INTERMETALLIC compounds
*ALUMINUM alloys
*TITANIUM alloys
*ALUMINUM alloying
*TENSILE strength
- Language
- ISSN
- 1362-1718
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. [ABSTRACT FROM AUTHOR]