In the original article they say they cold-roll, recrystallize, then strain harden. So definitely no casting, because the recrystallization is where the magic h

In the original article they say they cold-roll, recrystallize, then strain harden. So definitely no casting, because the recrystallization is where the magic happens. Rolling and casting should be fine though. They say that the alloy is mostly compatible with current steel processing infrastructure, so it looks promising.