TA10-Q345R爆炸复合板的界面微观结构及力学性能  

Interfacial Microstructure and Mechanical Properties of TA10- Q345R Composite Plate with Explosive Welding

作　　者：韩小敏[1] 王少刚[1] 黄燕[1] 陈照峰[1] 李斌斌[1] 

机构地区：[1]南京航空航天大学材料科学与技术学院,江苏南京210016

出　　处：《压力容器》2015年第6期24-29,共6页Pressure Vessel Technology

基　　金：江苏高校优势学科建设工程资助项目

摘　　要：对TA10钛合金与Q345R钢进行爆炸焊接,并对复合板的界面微观结构及力学性能进行了分析测试。微观分析显示,复合板的结合界面为波状结合,界面两侧的金属均发生了不同程度的塑性变形;在结合界面处存在短距离的合金元素互扩散层,界面局部区域存在少量的Ti-Fe金属间化合物。力学性能测试表明,在结合界面处的显微硬度最高,随着与界面距离增大逐渐降低;复合板的拉伸断口整体呈现韧性断裂特征,少量脆性相的形成并未对其性能产生大的不利影响,能够满足工程结构对其力学性能的要求。The titanium alloy TA10 and high strength low alloy steel Q345R was welded by using explosive welding. The interfacial mierostrueture and mechanical properties of composite plate were investigated. The results of microstructure analyses showed that the bonding interface of composite plate presents the pattern of wave shape, and the metals at both sides of interface generated plastic deformation to a certain degree. The interdiffusion layer of alloying elements exsits with short distance near the interface, and there are a little Ti - Fe intermetallic compounds produced in the local interface region. The results of mechanical properties tests indicated that the microhardness is the highest at interface, and it gradually decreases with the distance far from interface. The tensile fracture of composite plate presents the characteristic of ductile fracture. The generation of a little brittle phases do not have great harm effect to the performance of composite plate, and its mechanical properties can meet the requirements of engineering application.

关 键 词：钛-钢复合板 爆炸焊接 界面结构 力学性能 

分 类 号：TH142.2[一般工业技术—材料科学与工程] TG456.6[机械工程—机械制造及自动化]