Qi Yuanhao, Yang Yashe, Nan Li, et al. Microstructure and Properties of High Strength Ti-3Al-2.5V Ti Alloy Pipe[J]. Special Casting & Nonferrous Alloys, 2011,31(11):1062-1065.
Qi Yuanhao, Yang Yashe, Nan Li, et al. Microstructure and Properties of High Strength Ti-3Al-2.5V Ti Alloy Pipe[J]. Special Casting & Nonferrous Alloys, 2011,31(11):1062-1065.DOI：
高强Ti-3Al-2.5V合金管材的组织与性能
摘要
采用冷轧方法
通过设计不同的变形率和退火温度
研究了Ti-3Al-2.5V钛合金管材的显微组织和力学性能
探索了该合金的一种高强高韧管材的制备工艺。结果表明
当退火温度低于550℃时
Ti-3Al-2.5V合金管的再结晶程度相当低;当退火温度达700℃时
管材发生完全再结晶。合金管材力学性能的剧烈变化集中在退火温度为550～650℃之间。经工艺优化
当变形率为51.1%且退火制度为550℃×90min
或者变形率为68.5%～80.2%且退火制度为600℃×90min时
Ti-3Al-2.5V合金管材的抗拉强度≥862MPa
屈服强度≥724MPa
伸长率≥12%。
Abstract
Effects of different accumulated deformation rates and annealing temperatures on microstructure and mechanical properties of cold rolled Ti-3Al-2.5 V Ti alloy pipes were investigated to obtain a new preparing technology for preparing high strength and high ductility pipes.The results show that the recrystallization degree of Ti-3Al-2.5 V pipes exhibit relatively low with annealing temperature less than 550 ℃
while complete recrystallization can be observed in the pipes with annealing temperature of 700 ℃.The great variation of mechanical properties of the alloy pipes occurs at 550
6
50 ℃ annealing treatment.With deformation rate of 51.1% and annealing at 550 ℃ for 90 min
or deformation rate of 68.5%
8
0.2% and annealing at 600 ℃ for 90 min
tensile strength
yield strength and elongation of the Ti-3Al-2.5V alloy pipes are more than 862 MPa
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