Transactions of Materials and Heat Treatment

Title：DB-SPF technology of hollow blade for TC4 titanium alloy

Authors： Wang Guofeng Zhao Xiangyu Sun Chao Yang Mo

Unit： Harbin Institute of Technology

KeyWords： TC4 titanium alloy hollow blade DB-SPF

ClassificationCode：

year,vol(issue):pagenumber：2015,40(4):48-53

Abstract：

It is of great importance to form hollow blade by DB-SPF technology in reducing weight of the engine. The DB-SPF tests of hollow blade were carried out, the good quality hollow blades were obtained, and the optimum experimental parameters were determined. The thickness distribution of core plate and the connection of the panels and core plate were analyzed, and the diffusion bonding joint was analyzed by line scanning analysis. The results show that effects of the diffusion bonding joint are better with the increase of holding time during diffusion bonding. By multiple experiments, it is obtained that the quality of hollow blade and the diffusion bonding joints are good, and thickness of the core board is uniform when temperature is 920 ℃,internal pressure is 2 MPa and the forming time is 2 h.

Funds：

国家自然科学基金资助项目（51275129）；长江学者和创新团队发展计划资助（IRT1229）

王国峰（1973-），男，博士，教授，博士生导师

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