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Optimization of microstructure for new generation advanced high strength steels(AHSS ) for automobiles was briefly reviewed.Two different heat treatments(quenching partitioning austempering/QPA and quenching partitioning tempering/QPT) have been investigated to obtain optimal microstructures,which are made up of martensite(hard phase),retained austenite(soft phase),and carbide or nano-bainite.Combination of hot stamping and newly developed heat treatments is discussed.
Optimization of microstructure for new generation advanced high strength steels (AHSS) for automobiles was reviewed. Two different heat treatments (quenching partitioning austempering / QPA and quenching partitioning tempering / QPT) have been investigated to obtain optimal microstructures, which are made up of martensite hard phase, retained austenite (soft phase), and carbide or nano-bainite. Configuration of hot stamping and newly developed heat treatments is discussed.