Thermo-mechanical treatment of austenitic steel - followed by controlled quenching giving mech props similar to expensive alloys

摘要

Method of treating medicine carbon steels and low alloy steels comprises a thermomechanical treatment (e.g. hammering) at a temp. =1000 degrees C above the AC3 temp to obtain an austenitic microstructure and immediately quenching fast inorg to produce mainly martensite while preserving the austenitic matrix. The properties of such steels can be made similar or better than some more expensive alloy steels.