Metallographic analysis and testing of the quality connection layers in explosive welded al-cu bimetallic bars

摘要

In the paper have been investigated the microhardness, the microstructure and the bond strength of interface of bimetallic joint on the cross sections of the Al-Cu bimetallic bars. For the experimental analysis, a bimetallic bar was manufactured using an explosive technique method and the process of rolling. The systems and technological parameters of explosion welding were selected in such a manner as to obtain finished bimetallic bars of an outer diameter of approx. 22 mm and a copper area fraction of the bimetal cross-section of approx. 15 and 30%.