scholarly journals Fabrication of Ultra-Fine Grained Plain Low Carbon Steel through Dynamic Strain Induced Transformation during Integrated Extrusion Equal Channel Angular Pressing

2016 ◽  
Vol 34 (4) ◽  
pp. 73-85
Author(s):  
H. Shokrvash ◽  
A. Vajd ◽  
M. Shaban Ghazani ◽  
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◽  
...  
Keyword(s):  
Carbon Steel ◽  
Equal Channel Angular Pressing ◽  
Low Carbon Steel ◽  
Dynamic Strain ◽  
Low Carbon ◽  
Fine Grained ◽  
Angular Pressing

Effect of repetitive equal channel angular pressing on microstructural stability of low carbon steel

2001 ◽  
Vol 7 (5) ◽  
pp. 437-442 ◽  
Author(s):  
Young Kuk Kim ◽  
Sang Min Kim ◽  
Ki Seung Lee ◽  
Jong Jin Pak ◽  
Dong Hyuk Shin
Keyword(s):  
Carbon Steel ◽  
Equal Channel Angular Pressing ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Microstructural Stability ◽  
Angular Pressing

Numerical Simulation of Dynamic Strain-Induced Austenite-Ferrite Transformation and Post-Dynamic Kinetics in a Low Carbon Steel

2012 ◽  
Vol 706-709 ◽  
pp. 1592-1597 ◽  
Author(s):  
Cheng Wu Zheng ◽  
Dierk Raabe ◽  
Dian Zhong Li
Keyword(s):  
Carbon Steel ◽  
Retained Austenite ◽  
Early Stage ◽  
Isothermal Holding ◽  
Low Carbon Steel ◽  
Dynamic Strain ◽  
Low Carbon ◽  
Fine Grained ◽  
The Matrix ◽  
Good Agreement

2-D cellular automaton model was developed to simulate the dynamic strain-induced transformation (DSIT) from austenite (γ) to ferrite (α) and the post-dynamic kinetic behavior in a low carbon steel with the purpose of developing a methodology of mesoscopic computer simulation for an improved understanding of the formation of ultra-fine ferrite (UFF) in DSIT and the conservation of this microstructure during the post-deformation period. The predicted microstructure obtained after DSIT was compared with a quenched dual-phase steel. Its microstructure, consisting of fine-grained ferrite and fine islands of retained austenite dispersed in the matrix, were found to be in good agreement with the predictions. The simulated results indicate that the refinement of ferrite grains produced via DSIT can be interpreted in terms ofunsaturatednucleation andlimitedgrowth mechanisms. It is also revealed that continuing transformation from retained austenite to ferrite and the reverse transformation both could take place simultaneously during the post-deformation isothermal holding. A competition between them exists at the early stage of the post-dynamic transformation.

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