过渡层对锆/钢爆炸复合板剪切强度的影响  

Influences of transition layer on shear strength of Zr/steel explosive clad plate

作　　者：王小绪[1] 赵铮[2] 王金相[3] 何勇[1] 

机构地区：[1]南京理工大学机械工程学院,江苏南京210094 [2]南京理工大学能源与动力工程学院,江苏南京210094 [3]南京理工大学瞬态物理重点实验室,江苏南京210094

出　　处：《爆炸与冲击》2014年第6期685-690,共6页Explosion and Shock Waves

基　　金：国家自然科学基金项目(11272158);部委技术基础项目(C1820130005);部委预研支撑基金项目(62201070510);瞬态物理重点实验室基金项目(9140C300402120C30113)~~

摘　　要：为了考察钛作为过渡层提高锆/钢复合板结合强度的有效性,同时给出合理的爆炸焊接碰撞参数,对双层锆/钢和三层锆/钛/钢进行了小倾角法爆炸焊接实验研究。借助金相显微技术测量了复合板结合界面的波形参数,采用光滑粒子动力学法模拟得到了不同位置的碰撞速度和碰撞角,并按照国家标准（GB/T6396-2008）测量了复合板结合界面的爆炸态及退火态的剪切强度。结果表明：钛作为过渡层能够显著提高锆/钢界面的剪切强度;退火消除加工应力后,锆/钢及钛/钢结合面的剪切强度会有所降低;当锆/钛界面的碰撞速度为734-805m/s,碰撞角为19.8°-20.8°,钛/钢界面的碰撞速度为803-904m/s,碰撞角为19.5°-20.5°时,锆/钛/钢三层复合板的锆/钛和钛/钢界面的剪切强度都能高于140 MPa。In order to investigate the influence of the transition layer on the shear strength of the Zr/steel explosive clad plate and obtain the rational impact parameters of explosive welding,the difference of the Zr/steel and Zr/Ti/steel clad plates was compared by the explosive welding experiments at small angles.The interfacial wave parameters were measured by a metallographic microscope,and the impact velocities and impact angles were calculated by the smoothed particle hydrodynamics meshfree method.The shear strengths of the explosive and the annealed samples from the clad plates were measured according to the national standard（GBT 6396-2008）.The results indicate that titanium as the transition layer can increase the shear strength of the Zr/steel interface and annealing treatment can decrease the shear strength.When the impact velocity is 734-805m/s and the impact angle is 19.8°-20.8°,the shear strength of the Zr/Ti interface can be higher than 140 MPa.When the impact velocity is 803-904m/s and the impact angle is 19.5°-20.5°,the shear strength of the Ti/steel interface can also be higher than 140 MPa.

关 键 词：爆炸力学 剪切强度 爆炸焊接 锆/钢复合板 过渡层 

分 类 号：O389[理学—流体力学]