Enhanced work-hardening behavior and mechanical properties in ultrafine-grained steels with large-fractioned metastable austenite

2010 ◽  
Vol 63 (8) ◽  
pp. 815-818 ◽  
Author(s):  
Jie Shi ◽  
Xinjun Sun ◽  
Maoqiu Wang ◽  
Weijun Hui ◽  
Han Dong ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Work Hardening ◽  
Metastable Austenite ◽  
Work Hardening Behavior ◽  
Hardening Behavior ◽  
Ultrafine Grained

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.

On the transformation-induced work-hardening behavior of Zr47.5Co47.5Al5 ultrafine-grained alloy

2013 ◽  
Vol 35 ◽  
pp. 116-119 ◽  
Author(s):  
C.J. Li ◽  
J. Tan ◽  
X.K. Zhu ◽  
Y. Zhang ◽  
M. Stoica ◽  
...  
Keyword(s):  
Work Hardening ◽  
Work Hardening Behavior ◽  
Hardening Behavior ◽  
Ultrafine Grained

Work Hardening Behavior of Ultrafine Grained Duplex Medium-Mn Steels Processed by ART-Annealing

2012 ◽  
Vol 83 (4) ◽  
pp. 316-321 ◽  
Author(s):  
Rongmin Sun ◽  
Wenhuan Xu ◽  
Cunyu Wang ◽  
Jie Shi ◽  
Han Dong ◽  
...  
Keyword(s):  
Work Hardening ◽  
Work Hardening Behavior ◽  
Hardening Behavior ◽  
Ultrafine Grained

Stir zone anisotropic work hardening behavior in friction stir processed EN8 medium carbon steel

2020 ◽  
pp. 140582
Author(s):  
Md Anwar Ali Anshari ◽  
Murshid Imam ◽  
Mohd Zaheer Khan Yusufzai ◽  
Viswanath Chinthapenta ◽  
Rajnish Mishra
Keyword(s):  
Carbon Steel ◽  
Work Hardening ◽  
Medium Carbon Steel ◽  
Stir Zone ◽  
Medium Carbon ◽  
Work Hardening Behavior ◽  
Friction Stir ◽  
Hardening Behavior
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