TY - JOUR ID - TI - Effect of Heat Treatment Parameters on Microstructure and Mechanical Properties of (Aisi1005) Steel AU - Hassanen L. Jaber AU - R. k. Salim, AU - Ashraf S. Fahad PY - 2016 VL - 7 IS - 2 SP - 46 EP - 55 JO - University of Thi-Qar Journal for Engineering Sciences مجلة جامعة ذي قار للعلوم الهندسية SN - 26645564 26645572 AB - This study aims to investigate tensile properties and work hardening behavior of dual phase(DP) steels. A series of DP steels containing ferrite and martensite with different volumefractions of martensite (Vm) were produced by intercritical heat treatment. Microstructuralinvestigations, hardness test, and tensile test were carried out. The experimental results showedthat dual phase steels at 760oc and 10s have excellent mechanical properties in terms of tensilestrength, ductility and fracture energy. A further increase in Vm was found to increase tensilestrengths and ductility. The increasing and then decreasing trend in tensile strength is in contrastto the law of mixture. These unusual behaviors are discussed and explained. Work hardeningbehavior was analyzed in terms of Holloman analysis.

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