I was writing a story where a character wearing armor constructed for SCA / LARP has his armor repeatedly heated (e.g. walk through house on fire) and cooled (e.g. liquid nitrogen spray, a barrel of cold water dumped over head) to the point where it becomes brittle and shatters (when struck with an arrow or hammer or something).
Is there anybody here with experience smiting or using similar armor and who could tell me if this is possible, or if there are any circumstances where like outcome might happen?
Advice and references are much appreciated!
Thank you in advance!