Effect of β Forging and β Annealing on the Microstructure and Properties of the Ti-6Al-2Zr-2V-l.5Mo ELI Titanium Alloy
The microstructure,tensile property,and damage tolerance property of the Ti-6Al-2Zr-2V-l.5Mo ELI titanium alloy after two processes routines was investigated. The results showed that the microstructure after two processes was the bunched lamellar structure without primary α phase, and the a lamellar of bars after β forging was thicker. The high damage tolerance property could be achieved by one of these two processes routine. Tensile strength and fracture toughness of the bars after β forging and double annealing at α+β dual phase zone were higher while the plasticity,dynamic ductility and resistance of fatigue crack propagation of bars after α+β zone forging followed by β annealing were higher. It indicated that the fracture toughness property increased and resistance of fatigue crack growth decreased with the increasing of thickness of α lamellar in the Ti-6Al-2Zr-2V-l.5Mo ELI titanium alloy.
Ti-6 Al-2Zr-2V-1.5Mo ELI alloy processing fracture toughness fatigue crack growth rate
Wang Xiaoxiang Liu Jianrong Lei Jiafeng
Baoji Titanium Industry Co. Ltd.,Baoji 721014,China Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China
国际会议
The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)
北京
英文
308-310
2011-06-19（万方平台首次上网日期，不代表论文的发表时间）