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Weld zone characteristic and mechanical performance ofin situtitanium matrix composites using gas tungsten arc welding (GTAW)
- Source :
- Science and Technology of Welding and Joining. 17:630-635
- Publication Year :
- 2012
- Publisher :
- Informa UK Limited, 2012.
-
Abstract
- In situ TiBw and La2O3 reinforced titanium matrix composites were successfully fusion welded by the gas tungsten arc welding (GTAW) process and the weldability and feasibility for composites were studied, and uniform and defect free welds were produced with sound welding parameters. Microstructural observations showed that the joint has a distinctly identified weld zone characteristic. In addition, the distribution and size of TiBw in the weld became much more homogeneous and smaller. Moreover, the welded joints exhibited good mechanical properties at ambient temperature and the strength equal to the base metal at elevated temperature. The fracture mechanism of TiBw in the weld also was investigated.
Details
- ISSN :
- 17432936 and 13621718
- Volume :
- 17
- Database :
- OpenAIRE
- Journal :
- Science and Technology of Welding and Joining
- Accession number :
- edsair.doi...........48831172be1d399e22217c5ba2f7ea8d