多层金属复合材料界面微观结构特征数值计算研究  

Numerical Calculation Study on Interfacial Microstructure Characteristics of Multilayer Metal Composite Materials

作　　者：梁汉良 罗宁 周嘉楠 陈金华 贾永胜 陈翔 Liang Hanliang;Luo Ning;Zhou Jianan;Chen Jinhua;Jia Yongsheng;Chen Xiang(Hubei Key Laboratory of Blasting Engineering,Jianghan University,Wuhan 430056,China;China Coal Technology Engineering Group Huaibei Blasting Technology Research Institute Limited Company,Huaibei 235000,China;School of Mechanics and Civil Engineering,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]江汉大学爆破工程湖北省重点实验室,湖北武汉430056 [2]中煤科工集团淮北爆破技术研究院有限公司,安徽淮北235000 [3]中国矿业大学力学与土木工程学院,江苏徐州221116

出　　处：《稀有金属材料与工程》2025年第1期134-146,共13页Rare Metal Materials and Engineering

基　　金：爆破工程湖北省重点实验室开放基金(BL2021-03);安徽省爆炸能利用与控制重点实验室开放基金(BP20240104);中国矿业大学研究生创新计划(2024WLJCRCZL049);江苏省研究生科研与实践创新计划(KYCX24_2701)。

摘　　要：随着航空航天及兵器防护等领域技术与装备的快速进步与发展,加快轻质高强新型金属复合材料的开发和研究具有十分重要的意义。本研究采用多尺度数值计算方法探究了多层金属爆炸焊接复合材料界面特征参数变化规律及界面原子尺度扩散行为及特征。结果表明:随着时间的推移,多层板材间动态碰撞角呈现初始阶段小幅升高,并在中间阶段保持稳定的变化规律。结合界面呈现明显的波纹结构特征,多层复合板结合界面处压力分布明显高于板材其他区域,且结合界面压力呈现从上到下逐渐减小的变化规律,最下侧结合界面处有效塑性应变略高于其他3个结合界面。在不同速度微观尺度碰撞下,3个焊点处均发生了明显的原子扩散现象,随着冲击速度的减小,结合界面处原子扩散层厚度也随之减小,3个扩散层厚度范围分别为1.12~1.58μm,1.8~2.55μm和1.22~1.73μm。With the rapid progress and development of technique and equipment in the field of aerospace and weapon protection,it is of great significance to accelerate the development and research of new metal composite materials with lightweight and high-strength properties.In this research,the multiscale numerical calculation method was used to explore the variation law of interface characteristic parameters as well as atomic-scale diffusion behavior and characteristics of the interface of explosive welded multilayer metal composite materials.The results show that with the passage of time,the dynamic collision angle increases slightly in the initial stage and remains stable in the middle stage.The joining interface shows obvious waveform structure characteristics.The pressure distributed at the joining interface of the multilayer composite sheet is significantly higher than that in other regions of the sheet,and the pressure of the bonding interfaces decreases gradually from top to bottom.The effective plastic strain at the bottom interface is slightly higher than that at the other three interfaces.Under microscale collisions at different speeds,obvious atomic diffusion occurs at all three solder joints.As the impact speed decreases,the thickness of the atomic diffusion layer at the interface also decreases.The thickness of the three diffusion layers ranges from 1.12μm to 1.58μm,1.8μm to 2.55μm and 1.22μm to 1.73μm.

关 键 词：多层金属复合材料 爆炸焊接 界面微观结构 数值计算 

分 类 号：TG456.6[金属学及工艺—焊接] TB331[一般工业技术—材料科学与工程]