Author:
Chen Yuqing,Wang Guofeng,Liu Yongkang,Zhan Liqiang,Diao He,Wang Yuelin
Abstract
Titanium alloys used to be welded to gain good joint strength at 920 °C through diffusion bonding. However, due to the heat preservation at high temperatures for a long time, we obtain joints with great bond strength while the mechanical properties of the sheet are lost. In this paper, taking Ti6Al4V alloy as an example, we studied the microstructure of the surface under the different times of surface mechanical attrition treatment (SMAT). In addition, the microstructure and mechanical properties after diffusion bonding at 800 °C-5 MPa-1 h were also conducted. The results show that the shear strength of TC4 alloy welded joint after SMAT treatment is improved, and the maximum shear strength can reach 797.7 MPa, up about 32.4%
Funder
National Natural Science Foundation of China
the Special Research on civil aircraft of China: Study on the SPF/DB of the thin-wall titanium alloy at low temperature
Subject
General Materials Science,Metals and Alloys
Cited by
9 articles.
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