Interface Characteristics and Evolution Mechanism of W/CuCrZr in Hot Melt Explosion Welding  

热熔爆炸焊接W/CuCrZr界面特征及其演化机理

作　　者：Sun Yuling Liang Hanliang Zhu Jiansheng Ma Honghao Wang Luqing ZhangBingyuan Luo Ning Shen Zhaowu 孙玉玲;梁汉良;朱建生;马宏昊;王鲁庆;张冰原;罗宁;沈兆武(中国科学技术大学中国科学院材料力学行为和设计重点实验室,安徽合肥230026;中国人民解放军陆军炮兵防空兵学院,安徽合肥230031;中国科学技术大学,安徽合肥230026;中国矿业大学力学与土木工程学院,江苏徐州221116)

机构地区：[1]CAS Key Laboratory of Mechanical Behavior and Design of Materials,University of Science and Technology of China,Hefei 230026,China [2]PLA Army Academy of Artillery and Air Defense,Hefei 230031,China [3]University of Science and Technology of China,Hefei 230026,China [4]School of Mechanics and Civil Engineering,China University of Mining and Technology,Xuzhou 221116,China

出　　处：《稀有金属材料与工程》2024年第11期3077-3083,共7页Rare Metal Materials and Engineering

基　　金：National Natural Science Foundation of China(12072363,12272374,12372373);Special Fund for Fundamental Research of the Central Universities(WK2480000008,WK2480000007,WK2320000049);Anhui Provincial Science and Technology Major Project(202003A05020035)。

摘　　要：Explosion welding was carried out on the basis of vacuum hot melt W/CuCrZr composite plate.Metallurgical microscope,scanning electron microscope and energy dispersive X-ray spectroscope were used to observe the microscopic morphology of the bonding interface.At the same time,combined with finite element calculations,the evolution mechanism of the interface of the hot melt explosion welded W/CuCrZr composite plate was explored.The results show that the interface bonding of the hot melt explosion welded W/CuCrZr composite plate is good and there is a cross-melting zone with 3–8μm in thickness,but cracks are developed on the W side.The numerical simulation reproduces the changes of pressure,stress,strain and internal energy at the bonding interface in the process of hot melt explosion welding.The location of the crack generated in the experiment coincides with the high stress position calculated by numerical simulation.The high pressure and high temperature near the hot melt explosion welding interface further promote the bonding of the interface.在真空热熔W/CuCrZr复合板的基础上进行了爆炸焊接,采用金相显微镜、扫描电镜及能量色散X射线光谱对结合界面进行微观形貌观察,同时结合有限元计算探索了热熔爆炸W/CuCrZr复合板界面的演化机制。结果表明:热熔爆炸焊接W/CuCrZr复合板的界面结合良好,具有3~8μm交叉熔融区,但W侧产生了裂纹。数值模拟再现了热熔爆炸焊接过程中结合界面压力、应力、应变及内能变化规律,实验产生裂纹的位置和数值模拟计算的高应力位置吻合,热熔爆炸焊接界面附近的高压、高温进一步促进了界面的结合。

关 键 词：hot melt explosion welding W/CuCrZr interface characteristics numerical simulation evolution mechanisms 

分 类 号：TG456.6[金属学及工艺—焊接]