爆炸焊复合板界面特征和性能研究+文献综述

摘要利用金相显微镜观对典型的Q235/304不锈钢、7A52铝/AZ31镁合金、Al-Mg-Al三层爆炸复合板的焊缝及其附近组织形貌进行观察；并用能谱分析仪（EDS）测定了界面附近的元素分布。采用显微硬度测试仪测定界面两侧的显微硬度分布情况。研究结果表明：Q235/304不锈钢、7A52铝/AZ31镁合金、Al-Mg-Al三层爆炸焊复合板界面存在塑性变形、界面熔化、原子间的相互扩散以及波状结合等微观特征。硬度试验表明，离界面越近处，硬度值越高，说明爆炸复合板界面处发生了塑性变形，导致形变硬化。Q235/304不锈钢、7A52铝/AZ31镁合金、Al-Mg-Al三层复合板爆炸复合是压力焊为主导，伴随着元素扩散、界面熔化的“三位一体”的焊接技术。7067
关键词爆炸焊接 Q235/304不锈钢复合板 7A52铝/AZ31镁合金复合板
        Al-Mg-Al三层爆炸复合板复合界面   微观特性
毕业论文外文摘要
Title Interface characteristics and properties of       explosion welded composite plate
Abstract
By metallurgical microscope we could view the weld and nearby organizations of typical Q235/304 stainless steel，7A52 Al alloy/AZ31 Mg alloy and Al-Mg-Al explosion welded clad plate.Near the interface, the element distribution were measured through spectrum analyzer (EDS) ，and on both sides of the interface the microhardness distribution were tested on Microhardness tester.The results show that：Q235 /304 stainless steel,7A52 Al alloy/AZ31 Mg alloy and Al-Mg-Al explosion welded clad plate composite interface existence plastic deformation, interface melting, interdiffusion between the atoms，the wavy interface and some microscopic characteristics.The hardness experiment indicates that nearer the interface, the degree of hardness is higher.It proves that the interface of the explosion welded clad plate existences plastic deformation because of strain hardening. The explosive welding of all these composite metal is determined by pressure welding, with atomic diffusion and the melting of interfaces.
Keywords Explosive welding    Q235/304 stainless steel composite plate
          7A52 Al alloy/AZ31 Mg alloy composite plate
          Al-Mg-Al explosion welded composite plate
          Interfaces     Microscopic characteristics
目   次
第一章绪论   1
1.1选题背景及意义   1
1.2 爆炸焊接国内外现状   2
1.3 课题研究的主要内容   3
第二章爆炸焊接   4
2.1 爆炸焊接的基本理论   4
2.2 爆炸焊接的特点   5
2.3 爆炸焊接的应用   6
第三章试验材料及方法   9
3.1 试验材料   9
3.2 爆炸焊接工艺试验   9
3.3 金相实验   10
3.4 扫描电镜实验   12
3.5 界面硬度分布测试实验   13
第四章试验结果及分析讨论   14
4.1 金相实验结果分析   14
4.2 扫描电镜实验结果分析   18
4.3 显微硬度分布测试实验结果分析   26
4.4 爆炸焊界面结合机理综合讨论   30 爆炸焊复合板界面特征和性能研究+文献综述:http://www.751com.cn/cailiao/lunwen_4826.html