Enhancement of work-hardening behavior of dual phase steel by heat treatment

2018 ◽  
Vol 49 (9) ◽  
pp. 1081-1086 ◽  
Author(s):  
Z. Nasiri ◽  
H. Mirzadeh
Keyword(s):  
Heat Treatment ◽  
Work Hardening ◽  
Dual Phase Steel ◽  
Dual Phase ◽  
Work Hardening Behavior ◽  
Hardening Behavior

scholarly journals Investigation of intercritical heat treatment temperature effect on microstructure and mechanical properties of dual phase (DP) steel

10.30544/293 ◽  
2017 ◽  
Vol 23 (2) ◽  
pp. 143-152
Author(s):  
Mohammad Davari ◽  
Mehdi Mansouri Hasan Abadi
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Work Hardening ◽  
Heat Treatment Temperature ◽  
Treatment Temperature ◽  
Dual Phase ◽  
Work Hardening Behavior ◽  
Hardening Behavior ◽  
Heat Treated ◽  
Intercritical Heat Treatment

In the present study, the effect of intercritical heat treatment temperature on the tensile properties and work hardening behavior of ferritic-martensitic dual-phase steel have been investigated utilizing tensile test, microhardness measurement and microscopic observation. Plain carbon steel sheet with a thickness of 2 mm was heat treated at 760, 780, 800, 820 and 840 °C intercritical temperatures. The results showed that martensite volume fraction (Vm) increases from 32 to 81%with increasing temperature from 760 to 840 °C. The mechanical properties of samples were examined by tensile and microhardness tests. The results revealed that yield strength was increased linearly with the increase in Vm, but the ultimate strength was increased up to 55% Vm and then decreased afterward. Analyzing the work hardening behavior in term of Hollomon equation showed that in samples with less than 55% Vm, the work hardening took place in one stage and the work hardening exponent increased with increasing Vm. More than one stage was observed in the work hardening behavior when Vm was increased. The results of microhardness test showed that microhardness of the martensite is decreased by increase in heat treatment temperature while the ferrite microhardness is nearly constant for all heat-treated samples.

Investigation on Non-Equivalence of Dislocation Types on Work Hardening Behavior of Dual-Phase Steel

2021 ◽  
Author(s):  
Nan Wang ◽  
Yongnan Chen ◽  
Gang Wu ◽  
Qinyang Zhao ◽  
Zhen Zhang ◽  
...  
Keyword(s):  
Work Hardening ◽  
Dual Phase Steel ◽  
Dual Phase ◽  
Work Hardening Behavior ◽  
Hardening Behavior
Sign in / Sign up

Export Citation Format

Share Document