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The present paper discusses the superior work hardening behavior of a series of newly designed super strong (tensile strength~1100–2000MPa) and highly ductile (elongation~12–32%) multiphase steels comprising of intercritical ferrite, bainite, retained austenite and pearlite in various proportions. This combination of phases has been obtained by continuously cooling a moderately high carbon high silicon...
A moderately high carbon (0.61%) high silicon steel was subjected to a newly designed heat treatment cycle consisting of continuous cooling for different duration after austenitization followed by austempering at 300, 350 and 400°C to form a very high strength and highly ductile multiphase steels with microstructures consisting of varied amounts of ferrite (formed during continuous cooling), bainite...
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