Friction stir welding of thermohydrogen processed titanium alloy
- Liu H.J. ,
- Zhou L. ,
- Liu P. ,
- et al
- Liu H.J. ,
- Zhou L. ,
- Liu P. and
- Fujii H.
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Description
Friction stir welding experiments using a W-Re pin tool were undertaken on thermohydrogen processed Ti, 6-6.2%Al, 4.15-4.18%V, 0-0.5%H alloys to investigate the effect of hydrogen content on weldability, and the welded joint morphology, microstructure and mechanical properties were examined. Welding was performed at a rotational speed of 400 rpm and travel speed of 20-50 mm/min. Cross-sectional microstructures were observed by optical microscopy and SEM. Mechanical properties were characterised by room temperature tensile tests after which fracture locations and surfaces were analysed microscopically. The effects of hydrogen content on surface oxidation, grain boundaries in the nugget and joint strength are discussed.
7th International Symposium, 20-22 May 2008, Poster Session, Paper 06
Subjects
- Friction welding
- Welding
- Process
- Friction stir welding
- Nonferrous
- Material
- Titanium and Ti alloys
- Weldability
- Microstructure
- Weld zone
- Weld
- Dynamically recrystallised zone
- Thermomechanically affected zone
- Strength
- Mechanical properties
- Properties
- Ultimate tensile strength
- Grain
- HAZ
- Process conditions
- Heat treatment
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