| http://www.w3.org/ns/prov#value | - The structure is tetragonal and forms rapidly. - Complete transformation requires cooling through the transformation temperature range, to below MF. The resulting martensite is brittle and called untempered martensite. - Tempering is a process of reheating to a low temperature to toughen the steel.??? Quenching can be in oil, plain water, salt water, polymers, salt baths, or air depending on the c
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