航天器环境工程2013，Vol.30Issue(3)：310-315,6.DOI:10.3969/j.issn.1673-1379.2013.03.016
新型锆钛合金的动态拉伸力学性能与微观断裂机制试验研究
Tests of dynamic tensile properties and microscopic fragment mechanism for a new zirconium-titanium alloy
摘要
Abstract
Dynamic tension tests were conducted by employing the SHTB(split Hopkinson tension bar) to study the dynamic machanical properties of a new zirconium-titanium alloy.The dynamic mechanical properties of the alloy were determined at high strain rates ranging from 800 S-1 to 4000 s-1 at room temperature.The results show that the mechanical behavior of zirconium-titanium alloy depends on the strain rate,the dynamic strengths(including σ0.2 and σb),the unstable strain,the elongation,and the strain energy density all increase with the increase of the strain rates.The SEM fractographic observation shows that there exists a strain rate dependence of the fracture mode for the alloy sample.At room temperature and 800 s-1,the sample is brittle,but its fracture modes changes from a quasi-cleavage one to a ductile one with increased strain rates.关键词
Hopkinson杆/动态拉伸/应变率/锆钛合金Key words
Hopkinson bar/ dynamic tension/ strain rate/ zirconium-titanium alloy分类
通用工业技术引用本文复制引用
刘崧,覃金贵,陈荣,龚自正,张品亮..新型锆钛合金的动态拉伸力学性能与微观断裂机制试验研究[J].航天器环境工程,2013,30(3):310-315,6.基金项目
国家重点基础研究发展计划资助项目(编号:2010CB731600) （编号:2010CB731600）
