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易湘斌,李宝栋,张俊喜,郭小汝,常文春,李杏发.高温、高应变率下TB6钛合金的动态压缩性能[J].稀有金属材料与工程(英文),2019,48(4):1220~1224.[YI Xiang-bin,LI Baodong,ZHANG Junxi,GUO Xiaoru,CHANG Wenchun and LI Xinfa.Dynamic compressive mechanical properties of TB6 titanium alloyunder high temperature and high strain rate[J].Rare Metal Materials and Engineering,2019,48(4):1220~1224.]
Dynamic compressive mechanical properties of TB6 titanium alloyunder high temperature and high strain rate
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Received:September 14, 2017  Revised:October 28, 2017
DOI:
Key words: TB6 titanium alloy  Dynamic compression performance  Adiabatic shear  Microhardness
Foundation item:国家自然科学基金(51465029);甘肃省科技计划 (1606RJYA253) ;甘肃省高校科研项目(2014A-123,2015A-161);兰州工业学院青年科技基金(17K009)资助
Author NameAffiliation
YI Xiang-bin,LI Baodong,ZHANG Junxi,GUO Xiaoru,CHANG Wenchun and LI Xinfa  
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Abstract:
      Using high temperature Hopkinson pressure bar test system,TB6 titanium alloy reducts the quality test 3000 s - 1 strain rate respectively, which is at different temperatures (550℃-850℃) and dynamic compression mechanical properties test, and get the material in different temperature and strain rate under the coupled action of true stress-strain curve, the temperature of the material flow stress and strain rate sensitivity. The experimental results show that under the condition of high strain rate, material has a certain strain rate strengthening, plasticizing effect, with the increase of temperature, the effects of the adiabatic heating thermal softening strenghthen, shear zone length increases. materials in 750 ℃ show abnormal strain rate softening phenomenon, shear band bifurcation may be the cause of strength decreased.