AZ91 magnesium alloy in different heat treatment conditions was impacted by GCr15 steel projectile (2 km/s, power gun) and 2017 Al alloy projectile (3 km/s, two-stage light gas gun). Deformed bands, plastic flow and a wealth of cracks were observed near the crater in as-cast magnesium alloy impacted by GCr15 steel projectile, while for the solution treated alloy, both deformed and transformed bands were observed accompanied by fewer cracks near the crater. Upon higher velocity impact using two-stage light gas gun, many cracks and severe deformed areas containing a number of elongated grains were observed near the crater for both hot-forged and solution-treated targets, while fewer adiabatic shear bands could be found. Most of these shear bands were located at the end of cracks. The strain hardening at different zones under the crater was also investigated.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.