Influence of heat treatment on microstructure and damage tolerance property in Ti-6Al-2Zr-1Mo-1V
The influence of heat treatment on the microstructure and damage tolerance property of Ti-6Al-2Zr-1Mo-1V titanium alloy was investigated.The large-thickness Ti-6Al-2Zr-1Mo-1V titanium alloy plate was produced by β-processing,following with duplex anneal in (α+β) phase field and β anneal,respectively.The fatigue crack propagation rate(da/dN) test and the fracture toughness(KⅠC) test of Ti-6Al-2Zr-1Mo-1V were performed.The results show that the annealing in (α+ β) phase field,with increasing anneal temperature,prior β grain size and α colony size of Ti-6Al-2Zr-1Mo-1V remained constant approximately,α lamella mean size increases gradually; KⅠC increases and da/dN decreases respectively; when annealing in β phase field,prior β grain size and α colony size increases sharply,da/dN decreases drastically.β anneal is better than anneal in (α+β) phase field as to improve the damage tolerance property of Ti-6Al-2Zr-1Mo-1V.
The influence of heat treatment on the microstructure and damage tolerance property of Ti-6Al-2Zr-1Mo-1V titanium
FAN Rong-hui ZHU Ming HUI Song-xiao LI De-fu SHEN Jian
General Research Institute for Nonferrous Metals,Beijing,100088,China
国际会议
2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)
长沙
英文
2007-11-28（万方平台首次上网日期，不代表论文的发表时间）