Mechanical properties and shock-induced chemical reaction behaviors of cold-rolled Al/Ni multi-layered composites

Abstract

Al/Ni multi-layered composites were manufactured by cold rolling with different passes. The influence of cold rolling passes on the mechanical properties and shock-induced chemical reaction (SICR) behaviors of Al/Ni multi-layered composites was investigated by quasi-static compression tests and impact initiation experiments. A scanning electron microscopy (SEM) was used to obtain the microstructures of the Al/Ni multi-layered composites, and the microstructures from the scanning electron microscopy images were used to explain the experimental results. The results show that the cold-rolled Al/Ni multi-layered composites behave more plastically than the powder-compacted Al/Ni composites do. The compression strength of the Al/Ni multi-layered composites increases with the growth of rolling passes. On the other hand, more rolling passes result in decaying energy release capacity of the Al/Ni multi-layered composites under impact velocity from 800 m/s to 1 500 m/s.