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,2019,48(4):1220~1224.[YI Xiang-bin,LI Baodong,ZHANG Junxi,GUO Xiaoru,CHANG Wenchun,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.]
高温、高应变率下TB6钛合金的动态压缩性能
投稿时间:2017-09-14  修订日期:2017-10-28
中文关键词:  TB6钛合金  动态压缩性能  绝热剪切  显微硬度
基金项目: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
中文摘要:
      利用高温 Hopkinson 压杆试验系统,对TB6钛合金分别进行应变率为3000s-1,不同温度下(550-850℃)的动态压缩力学性能测试,得到材料在不同温度和应变率耦合作用下的真应力-应变曲线,考察材料流动应力的温度和应变率敏感性。实验结果表明,在高应变率条件下,材料具有一定的应变率增强、增塑效应,随着温度的升高,塑性变形产生的绝热升温热软化作用增强,剪切带长度增加;材料在750℃表现出反常的应变率软化现象,剪切带分叉可能是造成强度下降的原因。
Dynamic compressive mechanical properties of TB6 titanium alloyunder high temperature and high strain rate
英文关键词:TB6 titanium alloy  Dynamic compression performance  Adiabatic shear  Microhardness
英文摘要:
      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.
作者单位E-mail
易湘斌 兰州工业学院 yibin2003@126.com 
李宝栋 兰州工业学院  
张俊喜 兰州工业学院  
郭小汝 兰州工业学院  
常文春 兰州工业学院  
李杏发 兰州工业学院  
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