|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||GAT-2017 (Gamma Alloys Technology - 2017)
||F-33: Vacuum Brazing of Ti-48Al-2Cr-2Nb
||Yusheng Cai, Renci Liu, Dong Liu, Yuyou Cui, Rui Yang
|On-Site Speaker (Planned)
Ti–48Al–2Cr–2Nb alloy was vacuum brazed with Ti–Zr–Cu–Ni based amorphous foil and the influence of brazing welding parameters on the microstructure and tensile properties of the joints was investigated. Four zones of the joint were identified and the phase constituents of each zone were characterized. For a welding time of 30 minutes, the room temperature tensile strength of the joint reaches its peak value of 362 MPa at 950 oC. At this optimum brasing temperature the room temperature tensile strength of the joint reaches its peak value of 404 MPa at 45 minutes.All the brazed specimens fractured at the welding joint.The fracture surface varied with the brazing welding parameters and the cracks initiated at the fusion zone where the volume fraction of (Ti, Zr)2(Cu, Ni) phase is relative high.
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