摘要
本文针对激光修复TC4钛合金和商用TC4钛合金基材两种试验材料,利用分离式Hopkinson压杆(SHPB)装置,在室温下对两种材料进行动态压缩试验,得到了两种试样材料的真实应力-应变曲线。结果表明:SHPB试验后,两种试样都有明显的墩粗,并且部分试样破碎;两种试样材料都具有明显的应变率强化效应;另外,通过对比分析两种材料相同应变率下的应力-应变曲线,发现激光修复TC4钛合金的动态力学性能略优于商用TC4钛合金基材。
The laser-repaired TC4 titanium alloy and the commercial TC4 titanium alloy substrate are selected as the experiment materials and the dynamic compression tests of two materials are performed by a split hopkinson pressure bar(SHPB)equipment at room temperature,then the true stress-strain curves of two materials are obtained.The results show that the two kinds of specimens have both obvious upsetting and some of the specimens fracture after SHPB tests.The two materials have both the obvious strain rate strengthening effect.Moreover,by comparing the stress-strain curves of two materials under the same strain rates,the dynamic mechanical properties of the laser-repaired TC4 titanium alloy are better than those of the commercial TC4 titanium alloy substrate.
作者
王涛
乔伟林
李战
王盛
王宁
王浩
Wang Tao;Qiao Weilin;Li Zhan;Wang Sheng;Wang Ning;Wang Hao(School of Aeronautical Engineering,Civil Aviation University of China,Tianjin 300300,China;Qingdao International Airport Group Co.,Ltd.,Shandong Qingdao 266000,China;ETTC,Civil Aviation University of China,Tianjin 300300,China)
出处
《机械科学与技术》
CSCD
北大核心
2019年第7期1029-1034,共6页
Mechanical Science and Technology for Aerospace Engineering
基金
国家自然科学基金民航联合研究基金项目(U1633104)
天津市自然科学基金企业科技特派员项目(17JCTPJC51800)
数字制造装备与技术国家重点实验室开放课题(DMETKF2017018)资助
