摘要
介绍了西60mm×Lmm～Φ165mm×L mm高强、高韧TB10钛合金锻棒和Φ120mm×Lmm，Φ140mm×Lmm圆柱加锥形空心盲孔锻件的研究结果。结果表明：合金棒材在高强（Rm≥1100MPa）状态下，获得了Rm-KIC·αKU2的良好匹配关系。为满足Φ165mm×Lmm高强、高韧TB10钛合金锻棒的高冲击使用要求，采用了创新的热处理工艺，获得了中强状态下最佳的Rm-K·αKU2匹配关系。用Φ85mm×Lmm锻棒研究了该合金创新热处理工艺的裂纹扩展速率dα／dN，当log（△K）≤1．45（△K=28．18MPa·m^1/2）时，Ti-6-22-22S合金比TB10合金低，log（△K）〉1．45（△K=28．18MPa·m^1/2）时，TB10合金比Ti-6-22-22S合金低。
The research of bars （diameter 60 mm to diameter 165 mm） and hollow-blinded hole forgings of TB10 titanium alloy were introduced. The fatigue crack growth rate （FCGR） of the alloy is also studied under a new heat treatment. Results show that strength , impact toughness and fracture toughness of the alloy are matched very well under high strength and middle strength. When △K≤ 28.18 MPa· m^1/2, the FCGR of TB10 alloy is higher than that of Ti-6-22- 22S alloy, and when △K〉 28. 18 MPa· m^1/2, the FCGR of TB10 alloy is lower than that of Ti-6-22-22S alloy.
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2006年第2期221-225,共5页
Chinese Journal of Rare Metals
