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Effects Of The Tempering On Mechanical Properties Of Dual Phase Steels, T Sirinakorn, V Uthaisangsuk, S Srimanosaowapak
Effects Of The Tempering On Mechanical Properties Of Dual Phase Steels, T Sirinakorn, V Uthaisangsuk, S Srimanosaowapak
Journal of Metals, Materials and Minerals
Dual Phase (DP) steels have been gradually used in the automotive industries because of their distinguished strength and ductility properties. Principally, microstructure of the DP steels contains defined amount of hard martensite islands dispersed in soft ferrite matrix. This microstructure characteristic and corresponding mechanical properties of the DP steels can be adjusted by heat treatment. In this work, effects of tempering temperature and time on tensile properties of DP steels were investigated. Continuous yielding behavior of tempered DP steels was observed up to around a temperature of 300C. At higher tempering temperature, DP steels showed distinct increased yield point. Furthermore, …