α+β两相钛合金的动态压缩性能对抗弹性能的影响分析  

Influence of dynamic compression properties on ballistic performance ofα+β two-phase titanium alloy

作　　者：杨柳 王莹 吴静怡 刘昕 Yang Liu;Wang Ying;Wu Jingyi;Liu Xin(Chengdu Advanced Metal Materials Industrial Technology Research Institute Co.,Ltd.,Chengdu 610300,Sichuan,China)

机构地区：[1]成都先进金属材料产业技术研究院股份有限公司,四川成都610300

出　　处：《钢铁钒钛》2022年第4期42-47,共6页Iron Steel Vanadium Titanium

摘　　要：以研究钛合金材料动态压缩性能对抗弹性能的影响为目的,选用TC4、TC6、TC11三种不同强度级别的α+β两相钛合金为研究对象,采用动态压缩试验、准静态拉伸试验以及5.8 mm口径实弹靶试测试等方法,对材料微观组织、力学性能、动态压缩性能、弹坑形貌进行了对比分析。结果显示,TC4、TC6和TC11三种α+β两相钛合金经过固溶时效热处理后,TC11钛合金的拉伸强度和动态压缩强度最高,分别达到1258 MPa和1973 MPa,采用12 mm厚度的三种钛合金靶板进行靶试测试,对垂直入射的5.8 mm口径钢芯弹均进行了有效防护,TC11钛合金开坑深度2.4 mm,开坑尺寸7.5 mm×5.5 mm,均小于其他两种钛合金靶板的弹坑尺寸,对钢芯弹的侵彻有更好的防护作用。针对普通钢芯弹的防护,材料的动态压缩性能与其抗弹性能存在对应关系,动态压缩强度越高,临界断裂应变εcr越大,受冲击过程吸收的能量越多,抗弹性能越好。In order to study the effect of dynamic compression properties on ballistic resistance of titanium alloy materials,three different strength grades ofα+βtwo-phase titanium alloys,TC4,TC6 and TC11,are selected for the dynamic compression test,quasi-static tensile test and 5.8 mm caliber bullet target test to compare and analyze the microstructure,mechanical properties,dynamic compression properties and crater morphology.The results show that TC4,TC6 and TC11 strengthened by solution and aging heat treatment,the tensile strength and dynamic compressive strength of TC11 titanium alloy are the highest,reaching 1258 MPa and 1973 MPa,respectively.Three kinds of titanium alloy target plates with a thickness of 12 mm are used for target test,and the 5.8 mm caliber bullet with vertical incidence is effectively protected.The pit depth of TC11 titanium alloy is 2.4 mm and the pit size is 7.5 mm×5.5 mm,which is smaller than the crater size of the other two titanium alloy,and shows a better protective effect.For the protection of 5.8 mm caliber bullet,there is a corresponding relationship between the dynamic compression performance and its elastic resistance.The higher of the dynamic compression strength and the critical fracture strain,the more energy absorbed by the impact process,and the better the ballistic performance.

关 键 词：两相钛合金 动态压缩性能 抗弹性能 固溶时效强化 

分 类 号：TF823[冶金工程—有色金属冶金]