Volume 21, Issue 2 (1-2003)
2003, 21(2): 145-158 |
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M. Shamanian, A. Saatchi, M. Salehi and T. H North. Evaluation of Microstructure and Mechanical Properties of Ti6A14V / (WC-Co) Friction Welds. Journal of Advanced Materials in Engineering (Esteghlal) 2003; 21 (2) :145-158
URL: http://jame.iut.ac.ir/article-1-264-en.html
URL: http://jame.iut.ac.ir/article-1-264-en.html
Abstract: (8181 Views)
The metallurgical and mechanical properties of Ti6Al4V/(WC-Co) friction welds have ben investigated. The microstructure close to the bondline comprised a mixture of acicular and equiaxed α plus β phases. The diffusion of elements in the welded specimens has been detected. The fracture strengths of Ti6Al4V/(WC-Co) friction welds markedly improved when the cobalt content in the (WC-Co) carbide substrate increased.
During the three-point bend testing of Ti6Al4V/WC-6wt.%Co welds, the crack initiated at the bondline region at the periphery of the weld and then propagated into the brittle (WC-6wt.%Co) substrate, while with the Ti6Al4V/WC-11 wt.%Co and Ti6Al4V/WC-24wt.%Co welds, the crack initiated and propagated at the bondline region.
Keywords: Friction welding, Ti6Al4V alloy, Cemented tungsten carbide, Microstructure, Fracture strength
Keywords: Friction welding, Ti6A14V alloy, Cemented tungstan carbide, Microstructure, Fracture strength
