(1. 西北工业大学 材料学院，西北工业大学摩擦焊接陕西省重点实验室，西安 710072；
2. LERMPS, Université de Technologie de Belfort-Montbéliard (Site de Sévenans), 90010 Belfort, France)
摘 要: 采用冷喷涂制备多孔Ti块材，并通过高温真空热处理改善多孔Ti块材的组织与性能。结果表明：热处理后Ti块材气孔增大和产生微小的气孔；同时热处理态多孔Ti块材表现出脆性断裂特征，但热处理加强了Ti颗粒间局部的冶金结合，从而其平均抗拉强度提高约95.7 MPa。
关键字: 多孔Ti；冷喷涂；真空热处理；显微组织；拉伸性能
（1. Shaanxi Key Laboratory of Friction Welding Technologies, Northwestern Polytechnical University,
Xi’an 710072, China;
2. LERMPS, Université de Technologie de Belfort-Montbéliard (Site de Sévenans), 90010 Belfort, France）
Abstract:The porous Ti bulk was deposited by cold sprayed (CS) and subsequently modified by heat treatment aiming at improving its microstructure and tensile property. The results show that the porosity of Ti bulk increases and weeny pore is produced after annealing. Meanwhile, the stress-strain curves of the annealed porous Ti bulk showed a brittle fracture. However, due to the formation of the local metallurgical bonding between the Ti particles after heat treatment, the mean tensile strength increases to approximately 95.7 MPa.
Key words: porous Ti; cold spraying; vacuum heat treatment; microstructure; tensile strength
