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通过对47Ti-45Zr-5Al-3V合金进行不同温度退火处理,对其微观组织与性能的演变规律进行研究。结果表明,经过高温锻造后的47Ti-45Zr-5Al-3V合金由α+β相组成,在550℃以上温度热处理时合金中α相向β相转变。随温度升高合金中β相含量增加,当温度为800℃时α相全部转变为β相。热处理对47Ti-45Zr-5Al-3V合金的力学性能的影响取决于α相和β相含量。合金抗拉强度随β相含量增加降低,而伸长率增加。
The microstructure and properties of 47Ti-45Zr-5Al-3V alloy were studied by annealing at different temperatures. The results show that the 47Ti-45Zr-5Al-3V alloy after high temperature forging is composed of α + β phase, and the α phase to β phase transformation in the alloy when the temperature is over 550 ℃. As the temperature increases, the content of β phase increases, while the α phase all changes to β phase when the temperature is 800 ℃. The effect of heat treatment on the mechanical properties of 47Ti-45Zr-5Al-3V alloy depends on the α-phase and β-phase content. The tensile strength of the alloy decreases with the content of β phase, while the elongation increases.