Microstructural and mechanical properties of friction stir welded Cu-Cr-Zr alloy
- Jha K. ,
- Singh R.N. ,
- Bhanumurthy K. ,
- et al
- Jha K. ,
- Singh R.N. ,
- Bhanumurthy K. ,
- Dey G.K. and
- Mahule K.N.
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Description
Precipitation hardened copper alloy sheets (thickness 2 mm) containing Cu, 0.9-1.2%Cr, 0.06-0.09%Zr were joined by friction stir welding (FSW), process parameters were optimised to realise defect-free joints, and the microstructure and mechanical properties were investigated. FSW experiments were conducted in a butt joint configuration at tool rotational speeds of 600-1200 rpm and feed rates of 30 or 50 mm/min. Joint microstructure was observed by optical microscopy and SEM. Mechanical properties were characterised by Vickers microhardness profile measurements and tensile tests. Issues discussed include grain growth in the HAZ and equiaxed grain structure in the stir zone.
9th International Symposium, 15-17 May 2012, Session 11B: High Temperature FSW II, Paper 04
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