Microstructure and Mechanical Properties of Selective laser melting Ti-6Al-4V Alloy
- Paper number
IAC-14,C2,9,9,x23827
- Author
Mr. Liang Xiaokang, Capital Aerospace Machinery Corporation, China
- Coauthor
Dr. Peng Dong, China Aerospace Science and Technology Corporation (CASC), China
- Coauthor
Dr. Wang Guoqing, China
- Year
2014
- Abstract
As a type of α/β two phases titanium alloy Ti-6Al-4V possesses comprehensive mechanical properties, with wide service temperature range from -196℃ to 400℃,thus it is widely applied in aeronautics, astronautics, shipbuilding industry and medical areas. Otherwise, titanium alloy are difficult to machine in traditional methods for its high melting-point, chemical activity and huge deformation resistance. As the aeronautics and astronautics products required much higher service performances, it has became one of the hot research topics to fabricate light-weight, heat-resistance titanium components with complex structures. Selective laser melting(SLM) is a type of numerical solid free form technology, possessing the scatter+accumulate characteristic of additive manufacturing, showing an advantage for manufacturing titanium and superalloy with complex three dimensional surface, cavity, thin-wall and integrated structures. Ti-6Al-4V titanium alloy samples were fabricated using SLM technology, the microstructure evolution characteristic were analyzed,the influence of annealing treatment on the microstructure and the mechanical properties of deposited samples were discussed. Moreover, the electron beam welding performance of SLM Ti-6Al-4V samples were investigated.
- Abstract document
- Manuscript document
(absent)