Quasi-Static and Dynamic Properties of Ti-4Al-3V-0.6Fe-0.2O Titanium Alloy Plates
Quasi-Static and Dynamic Properties of Ti-4Al-3V-0.6Fe-0.2O Titanium Alloy Plates
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DOI：
10.1088/1757-899x/250/1/012004
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发表时间：
2017-10
期刊：
影响因子：
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通讯作者：
Rui Liu;S. Hui;W. Ye;Yang Yu;X. Song
中科院分区：
文献类型：
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作者：
Rui Liu;S. Hui;W. Ye;Yang Yu;X. Song
本文旨在研究名义成分Ti-4Al-3V-0.6Fe-0.2O钛合金的准静态和动态性能。将Ti-4Al-3V-0.6Fe-0.2O合金锭通过高于Tβ转变温度的一炉和低于Tβ转变温度的一炉锻造成32mm厚的板坯，然后通过低于Tβ转变温度的一炉轧制成8mm厚的板材。采用MTSTM测试系统在应变速率10-3 s-1下测试准静态拉伸性能。采用Split Hopkinson压力棒系统在3000±200 s-1的应变速率下测试动态压缩性能。结果表明，Ti-4Al-3V-0.6Fe-0.2O板的准静态性能与ATI 425TM合金板和商用Ti-6Al-4V板相当。 Ti-4Al-3V-0.6Fe-0.2O板的平均动态流变应力与ATI 425TM合金板相当，比Ti-6Al-4V板高100MPa以上。 Ti-4Al-3V-0.6Fe-0.2O 板均匀动态塑性变形时的最大应变比 ATI 425TM 合金板高约 15 ∼ 20%，约为 Ti-6Al-4V 板的 80%。
This paper aimed to study the quasi-static and dynamic properties of the titanium alloy with nominal composition Ti-4Al-3V-0.6Fe-0.2O. The ingots Ti-4Al-3V-0.6Fe-0.2O alloy were forged into slabs of 32 mm thickness by one heat above Tβ-transus temperature and one heat below Tβ-transus temperature, and then rolled into plates of 8 mm thickness by one heat below Tβ-transus temperature. The quasi-static tensile properties were tested by MTSTM testing system at strain rate of 10-3 s-1. The dynamic compression properties were tested by Split Hopkinson Pressure Bar system at strain rate of 3000±200 s-1. The results show that the quasi-static properties of the Ti-4Al-3V-0.6Fe-0.2O plate are comparable to ATI 425TM alloy plate and commercial Ti-6Al-4V plate. The average dynamic flow stress of Ti-4Al-3V-0.6Fe-0.2O plate is comparable to ATI 425TM alloy plate, over 100MPa higher than that of Ti-6Al-4V plate. The maximum strain during homogeneous dynamic plastic deformation of Ti-4Al-3V-0.6Fe-0.2O plate is approximately 15 ∼ 20% higher than that of ATI 425TM alloy plate, and is approximately 80% of that of Ti-6Al-4V plate.