scholarly journals Two flow stress models for describing hot deformation behavior of AISI-1045 medium carbon steel at elevated temperatures

Heliyon ◽  
2019 ◽  
Vol 5 (4) ◽  
pp. e01347 ◽  
Author(s):  
Mohanraj Murugesan ◽  
Dong Won Jung
Keyword(s):  
Flow Stress ◽  
Carbon Steel ◽  
Hot Deformation ◽  
Deformation Behavior ◽  
Elevated Temperatures ◽  
Medium Carbon Steel ◽  
Hot Deformation Behavior ◽  
Medium Carbon ◽  
Aisi 1045 ◽  
Stress Models

Development of Constitutive Relationships Using Compression Testing of a Medium Carbon Steel

1992 ◽  
Vol 114 (1) ◽  
pp. 116-123 ◽  
Author(s):  
K. P. Rao ◽  
E. B. Hawbolt
Keyword(s):  
Flow Stress ◽  
Carbon Steel ◽  
Strain Rate ◽  
Hot Deformation ◽  
Activation Parameters ◽  
Medium Carbon Steel ◽  
Power Relationship ◽  
Process Variables ◽  
Element Analysis ◽  
Medium Carbon

Empirical or semi-empirical stress-strain relationships are of limited applicability because (i) they require a large number of constants to represent the effect of process variables, (ii) they are not able to adequately describe the typical hot deformation characteristics i.e., strain hardening at lower strains and steady state flow stress at higher strains, and (iii) they are not able to provide reliable extrapolation. In the present study, flow curves for hot deformation of a medium carbon steel in compression were obtained using a computer controlled thermo-mechanical simulator. The flow stress data were analyzed using three Arrhenius-type equations, each representing the flow stress in terms of strain rate and temperature at different strain levels. It was found that the hyperbolic-sine equation represented the data very well; each of the different activation parameters of this equation varied systematically with strain, and could be satisfactorily described using a power relationship. Using these proposed relationships the flow stress can be described in terms of the process variables—strain, strain rate and temperature—in an explicit fashion of use in finite-element analysis of hot deformation processes.

scholarly journals Modelling the Hot Deformation Behavior of AlSi1MgMn Alloy via Flow Stress Models Utilizing Intelligent Algorithms

2019 ◽  
Vol 23 ◽  
pp. 221-226
Author(s):  
Petr Opěla ◽  
Ivo Schindler ◽  
Vladivoj Očenášek ◽  
Petr Kawulok ◽  
Rostislav Kawulok ◽  
...  
Keyword(s):  
Flow Stress ◽  
Hot Deformation ◽  
Deformation Behavior ◽  
Hot Deformation Behavior ◽  
Intelligent Algorithms ◽  
Stress Models

Hot deformation behavior of a medium carbon microalloyed steel

2011 ◽  
Vol 528 (10-11) ◽  
pp. 3876-3882 ◽  
Author(s):  
H. Mirzadeh ◽  
J.M. Cabrera ◽  
J.M. Prado ◽  
A. Najafizadeh
Keyword(s):  
Hot Deformation ◽  
Deformation Behavior ◽  
Microalloyed Steel ◽  
Hot Deformation Behavior ◽  
Medium Carbon ◽  
Carbon Microalloyed

scholarly journals Hot Deformation Behavior of a New Al–Mn–Sc Alloy

Materials ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 22
Author(s):  
Weiqi Kang ◽  
Yi Yang ◽  
Sheng Cao ◽  
Lei Li ◽  
Shewei Xin ◽  
...  
Keyword(s):  
Flow Stress ◽  
Hot Deformation ◽  
Deformation Behavior ◽  
Material Model ◽  
Strain Rates ◽  
Hot Workability ◽  
Hot Deformation Behavior ◽  
Hollomon Parameter ◽  
Dynamic Material Model ◽  
Optimal Processing

The hot deformation behavior of a new Al–Mn–Sc alloy was investigated by hot compression conducted at temperatures from 330 to 490 °C and strain rates from 0.01 to 10 s−1. The hot deformation behavior and microstructure of the alloy were significantly affected by the deformation temperatures and strain rates. The peak flow stress decreased with increasing deformation temperatures and decreasing strain rates. According to the hot deformation behavior, the constitutive equation was established to describe the steady flow stress, and a hot processing map at 0.4 strain was obtained based on the dynamic material model and the Prasad instability standard, which can be used to evaluate the hot workability of the alloy. The developed hot processing diagram showed that the instability was more likely to occur in the higher Zener–Hollomon parameter region, and the optimal processing range was determined as 420–475 °C and 0.01–0.022 s−1, in which a stable flow and a higher power dissipation were achieved.

Study on hot deformation behavior of carbon structural steel with flow stress

2012 ◽  
Vol 539 ◽  
pp. 294-300 ◽  
Author(s):  
Jian Wang ◽  
Hong Xiao ◽  
Hongbiao Xie ◽  
Xiumei Xu ◽  
Yanan Gao
Keyword(s):  
Flow Stress ◽  
Structural Steel ◽  
Hot Deformation ◽  
Deformation Behavior ◽  
Hot Deformation Behavior ◽  
Carbon Structural Steel
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