Interfacial Morphology and Bonding Mechanism of Explosive Weld Joints
Interfacial Morphology and Bonding Mechanism of Explosive Weld Joints
复制标题
爆炸焊接接头的界面形貌及结合机制
DOI：
10.1186/s10033-020-00495-7
复制
发表时间：
2021
影响因子：
4.2
通讯作者：
Jie Zhang
中科院分区：
文献类型：
--
作者：
Tingting Zhang;Wenxian Wang;Zhifeng Yan;Jie Zhang
层合板的界面结构对层合板的力学性能影响很大。然而，影响爆炸焊接板的界面形态、外观和相关结合机制的关键材料性质仍然未知。本文采用相同的基板（AZ 31 B合金）和不同的飞片金属（铝合金、铜和不锈钢）研究了界面形貌和结构。SEM和TEM结果表明，Al/Mg、Cu/Mg和SS/Mg复合板的界面分别为典型的正弦波、波形和半波界面。不同的界面形态主要是由于飞片和基体金属之间的硬度和屈服强度的差异。结合界面的显微组织分布结果表明，爆炸焊接复合板中的结合是冶金结合，而不是通常认为的固态结合。爆炸焊接Al/Mg、Cu/Mg和SS/Mg复合板的界面剪切强度分别达到201.2MPa、147.8MPa和128.4MPa。研究结果为爆炸焊接技术制备复合材料层合板提供了设计依据。
AbstractInterfacial structure greatly affects the mechanical properties of laminated plates. However, the critical material properties that impact the interfacial morphology, appearance, and associated bonding mechanism of explosive welded plates are still unknown. In this paper, the same base plate (AZ31B alloy) and different flyer metals (aluminum alloy, copper, and stainless steel) were used to investigate interfacial morphology and structure. SEM and TEM results showed that typical sine wave, wave-like, and half-wave-like interfaces were found at the bonding interfaces of Al/Mg, Cu/Mg and SS/Mg clad plates, respectively. The different interfacial morphologies were mainly due to the differences in hardness and yield strength between the flyer and base metals. The results of the microstructural distribution at the bonding interface indicated metallurgical bonding, instead of the commonly believed solid-state bonding, in the explosive welded clad plate. In addition, the shear strength of the bonding interface of the explosive welded Al/Mg, Cu/Mg and SS/Mg clad plates can reach up to 201.2 MPa, 147.8 MPa, and 128.4 MPa, respectively. The proposed research provides the design basis for laminated composite metal plates fabrication by explosive welding technology.