شماره ركورد كنفرانس :
4603
عنوان مقاله :
Martensite Volume Fraction Effect on the Dual-Phase Steel Work Hardening Behavior
پديدآورندگان :
Hatefi . S Sahand.hatefi@smt.iaun.ac.ir Postgraduate Students of Advanced Materials Research Center, Faculty of Materials Engineering, Najafabad Branch, Islamic Azad University , Davari M Postgraduate Students of Advanced Materials Research Center, Faculty of Materials Engineering, Najafabad Branch, Islamic Azad University , Mansouri M Assistant Professor of Advanced Materials Research Center, Faculty of Materials Engineering, Najafabad Branch, Islamic Azad University
كليدواژه :
DP steels , heat treatment , martensite volume fraction , Holloman analysis , mixture rule
عنوان كنفرانس :
كنفرانس بين المللي دو سالانه مكانيك جامدات تجربي
چكيده فارسي :
The present study was aimed to evaluate the dual-phase (DP) steels work hardening behavior in terms of
Holloman analysis. Low carbon steel (LCS) was annealed at various temperatures of 780, 800, 820 and
840°C in the Muffle furnace and the effect of the martensite volume fraction (VM) on DP steels work
hardening behavior was investigated. The Results revealed that the VM increased from 31% to 66% with
increasing annealing temperature from 780 to 840°C. The results of the work hardening mechanism in DP
steels showed that with more than 66%VM two stages work hardening occurs and with less than (VM=31, 49
and 55%) one stage took place and the work hardening exponent increased with increasing Vm.
Relationship between the VM and carbon content was evaluated by mixture rule and the result indicated
that martensite W% decreases from 0.42 to 0.2. with increasing the temperature from 780
