Effect of transient change in strain rate on plastic flow behaviour of Al-Zn-Mg-Cu alloy at elevated temperatures

2010 ◽  
Vol 3 (S1) ◽  
pp. 355-358 ◽  
Author(s):  
P. Petrov ◽  
B-A. Behrens ◽  
H. Conrads
Keyword(s):  
Strain Rate ◽  
Plastic Flow ◽  
Elevated Temperatures ◽  
Flow Behaviour ◽  
Transient Change ◽  
Cu Alloy

scholarly journals Effect of transient change in strain rate on plastic flow behaviour of low carbon steel

2007 ◽  
Vol 30 (1) ◽  
pp. 69-71 ◽  
Author(s):  
A Ray ◽  
P Barat ◽  
P Mukherjee ◽  
A Sarkar ◽  
S K Bandyopadhyay
Keyword(s):  
Carbon Steel ◽  
Strain Rate ◽  
Plastic Flow ◽  
Low Carbon Steel ◽  
Flow Behaviour ◽  
Low Carbon ◽  
Transient Change

Research into the Flow Stress of Al-Mg-Si Alloy (AD-35) during the Abrupt Change of the Strain Rate at Elevated Temperatures

2013 ◽  
Vol 554-557 ◽  
pp. 1099-1104 ◽  
Author(s):  
Pavel A. Petrov ◽  
Viktor Voronkov ◽  
Konstantin Potapenko ◽  
Mikhail Petrov ◽  
Olga Gamzina
Keyword(s):  
Flow Stress ◽  
Strain Rate ◽  
Elevated Temperatures ◽  
Abrupt Change ◽  
Hot Forging ◽  
Experimental Investigations ◽  
Engineering Strain ◽  
Industrial Practice ◽  
Transient Change ◽  
Forging Process

In industrial practice of rolling and hot forging, i.e. extrusion-type forging, abruptchanges in strain rate during the deformation of the material occur. For accurate numericalsimulation of a forging process, the experimental investigation of the effect of the transient changein strain rate on plastic flow behaviour is necessary. The present paper deals with the investigationof this effect on the flow stress of an AD-35 aluminium alloy during its deformation within thetemperature range of 350-450 °C. During continuous uniaxial compression loading of a cylindricalspecimen, the strain rate was either constant or abruptly increased or decreased from its initial valueat engineering strain of app. 26 %. The following strain-rate histories were applied: 1) constantstrain rate of 0.1, 1.0 and 10 s-1; 2) abrupt strain-rate increasing from 1.0 to 10.0 s-1; 3) abrupt strainratedecreasing from 10.0 to 1.0 s-1. The results of the experimental investigations corresponded tothe transient change in strain rate histories were used to verify the model of softening as well as themodel of hardening of the AD-35 alloy during the abrupt change of the strain rate. It allows todefine these models explicitly.

Room temperature plastic flow behaviour of Ti–6.8Mo–4.5Fe–1.5Al and Ti–10V–4.5Fe–1.5Al: Effect of grain size and strain rate

2007 ◽  
Vol 452-453 ◽  
pp. 219-227 ◽  
Author(s):  
A. Bhattacharjee ◽  
P. Ghosal ◽  
A.K. Gogia ◽  
S. Bhargava ◽  
S.V. Kamat
Keyword(s):  
Grain Size ◽  
Strain Rate ◽  
Plastic Flow ◽  
Room Temperature ◽  
Flow Behaviour

Plastic flow behaviour in an alumina-forming austenitic stainless steel at elevated temperatures

2014 ◽  
Vol 594 ◽  
pp. 246-252 ◽  
Author(s):  
D.Q. Zhou ◽  
X.Q. Xu ◽  
H.H. Mao ◽  
Y.F. Yan ◽  
T.G. Nieh ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Plastic Flow ◽  
Elevated Temperatures ◽  
Flow Behaviour

Arrhenius-Type Constitutive Equation Model of Superplastic Deformation Behaviour of Different Titanium Based Alloys

2018 ◽  
Vol 385 ◽  
pp. 45-52 ◽  
Author(s):  
Ahmed O. Mosleh ◽  
Anastasia V. Mikhaylovskaya ◽  
Anton D. Kotov ◽  
Vladimir K. Portnoy
Keyword(s):  
Strain Rate ◽  
Superplastic Deformation ◽  
Elevated Temperatures ◽  
Deformation Behaviour ◽  
Constitutive Models ◽  
Constant Strain Rate ◽  
Tensile Tests ◽  
Equation Model ◽  
Flow Behaviour ◽  
Forming Process

Modelling and predicting the flow behaviour of metallic materials subjected to superplastic deformation is mandatory for providing useful information about the metal forming process. This information helps the designers to reduce the manufacturing time and costs by choosing appropriate deformation conditions based on the models results. The study developed a constitutive model to predict the flow behaviour of various Ti-based alloys (Ti-2.5Al-1.8Mn, Ti-6Al-4V and Ti-4Al-1V-3Mo) at elevated temperatures. The constant strain rate tests within the superplastic temperature and the strain rate ranges for each alloy were performed. The experimental tensile tests results were used to develop the hyperbolic sine Arrhenius-type constitutive models for each alloy. The performance of the developed model for each alloy was evaluated regarding the correlation coefficient (R), the mean absolute relative error (AARE) and the root mean square error (RMSE). The results revealed that the predicted flow stresses have a good agreement with the experimental flow stresses for the studied alloys.

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