Preparation of friction stir welding of the aluminum alloy AA 2219 for launcher applications
- Kahnert M. ,
- Mestek M. ,
- Windisch M. ,
- et al
- Kahnert M. ,
- Mestek M. ,
- Windisch M. ,
- Tessier I. and
- Okualla M.
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Description
With regard to the application of friction stir welding (FSW) to the production of launcher tanks holding cryogenic liquids, an investigation was undertaken to establish a robust and industrialised FSW process for AA 2219 alloys in T87 and T851 conditions. The working operation field was determined by studying the effects of rotational speed, feed rate and axial force on the room temperature and cryogenic (temperature -253 to -196 deg.C) tensile strength and elongation of welded plate specimens (thickness 8 or 10 mm). Exfoliation tests were conducted according to ASTM G 34 to examine the pitting and stress corrosion cracking susceptibility of weldments. Ultrasonic phased array inspection was undertaken to characterise lack of penetration and lack of fusion defects. The strength of FSW processed material was compared with that of TIG welded specimens.
9th International Symposium, 15-17 May 2012, Session 2A: Applications I, Paper 02
Subjects
- Aluminium and Al alloys
- Nonferrous
- Material
- 2xxx Al series
- Friction welding
- Welding
- Process
- Friction stir welding
- Service conditions
- Cryogenics
- Process conditions
- Process procedures
- Properties
- Corrosion
- Ultrasonic testing
- Nondestructive testing
- Testing
- Phased array techniques
- Environment
- Space exploration environment
- Pitting corrosion
- Stress corrosion
- Strength
- Mechanical properties
- Ultimate tensile strength
- Defects
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