Im Yong-Deok, Park Kwang-Suk, Song Kuk-Hyun
Korea Institute of Industrial Technology, Gangneung Science Industry Park 106-11 Daejeon-Dong, Gangneung-si, Gangwon-do 25440, Korea.
Department of Welding and Joining Science Engineering, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju 61452, Korea.
J Nanosci Nanotechnol. 2018 Mar 1;18(3):2121-2124. doi: 10.1166/jnn.2018.14957.
In this study, the microstructure and mechanical property of Al/Cu clad material fabricated by differential speed rolling at room temperature were evaluated. Al and Cu plates were prepared and mechanically cladded at a differential speed ratio of 2:1 between the upper and lower rolls. Post- heat-treatment was carried out after the mechanical cladding at 400 °C for 60 min to induce the formation of intermetallic compound layers at the bonded interface of Al/Cu. As a result, differential speed rolling afforded a soundly cladded interface without any defects such as voids and cracks. In addition, intermetallic compound layers such as Al4Cu9 and Al2Cu were formed at the mechanically bonded interface during post-heat-treatment for 60 min, which led to an increase in Vickers microhardness value more than 30% relative to the base material. Therefore, we systematically explained the relationship between formation of intermetallic compounds and mechanical property of Al/Cu clad materials in this study.
在本研究中，对室温下通过差速轧制制备的Al/Cu复合材料的微观结构和力学性能进行了评估。制备了Al板和Cu板，并以上下辊2:1的差速比进行机械包覆。机械包覆后在400℃下进行60分钟的后热处理，以促使在Al/Cu的结合界面处形成金属间化合物层。结果，差速轧制提供了一个无任何诸如孔隙和裂纹等缺陷的良好包覆界面。此外，在60分钟的后热处理过程中，在机械结合界面处形成了诸如Al4Cu9和Al2Cu等金属间化合物层，这导致维氏显微硬度值相对于基体材料增加了30%以上。因此，在本研究中我们系统地阐述了金属间化合物的形成与Al/Cu复合材料力学性能之间的关系。
