Recent advances in joining of aluminium metal matrix composites
- TWI, Cambridge (United Kingdom)
Studies have been made of the use of friction welding and gas tungsten arc welding to join several types of SiC particulate reinforced aluminium alloys. The joints have been subjected to detailed metallographic assessment, and some mechanical property data are also reported. Friction welding has been shown to be a very suitable process, and good joints were obtained with relative ease. Although bond line strength in the as-welded condition is less than parent material strength, a full solution treatment and age will restore properties. GTA welding is possible on reinforced 2080 and 7475 sheet materials, using either autogenous welding or a 4047A filler. No evidence for particle/matrix reactions was observed, although SiC particles in the melt zone were often surrounded by eutectic or interdendritic phases. Mechanical properties were variable, but could be significantly improved by postweld heat treatment.
- OSTI ID:
- 445288
- Report Number(s):
- CONF-940367-; ISBN 0-87171-441-8; TRN: IM9713%%24
- Resource Relation:
- Conference: advanced joining technologies for new materials II conference, Cocoa Beach, FL (United States), 2-4 Mar 1994; Other Information: PBD: 1994; Related Information: Is Part Of Advanced joining technologies for new materials 2: Proceedings; PB: 298 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Microstructure evolution in the fusion welding of heat-treatable Al-Cu-Li alloys. Ph.D. Thesis
Weldability of extruded aluminum-alumina composites