Effect of Isothermal Deformation Amount on Electron Beam Welded Joint of Ti60/Ti-22Al-25Nb.

Zhang, Jingli; Guo, Hongzhen; Li, Kai

Ti60 and Ti-22Al-25Nb were joined by an electronic beam (EB) welding and then forged by a microprocessor-controlled 630 ton hydraulic press at different deformation amounts (30%, 40%, and 50%). The effect of the deformation amount on the microstructure and properties of the welded joint of Ti60/Ti-22Al-25Nb during isothermal forging was investigated. The results revealed that the samples exhibited great strength, which was insensitive to the microstructure because of the high τp. It was found that the elongation (A) and the reduction of area (Z) were strongly dependent on microstructural features. Ductility was greatly improved by the 40% and 50% deformation. Furthermore, the 40% deformation sample exhibited the greatest combination of strength and ductility.

FORGING; ELECTRON beam welding; WELDED joints; ISOTHERMAL processes; HYDRAULIC presses; MICROSTRUCTURE; DUCTILITY

Materials & Manufacturing Processes, 2016, Vol 31, Issue 16, p2130

1042-6914

Academic Journal

10.1080/10426914.2015.1090582