Effect of temperature, strain, and strain rate on the flow stress of aluminum under shock-wave compression

2012 ◽  
Vol 112 (7) ◽  
pp. 073504 ◽  
Author(s):  
E. B. Zaretsky ◽  
G. I. Kanel
Keyword(s):  
Shock Wave ◽  
Flow Stress ◽  
Strain Rate ◽  
Effect Of Temperature ◽  
Strain And Strain Rate ◽  
Wave Compression ◽  
Shock Wave Compression ◽  
Temperature Strain

scholarly journals Characteristics of Plasticity of Hot Deformed Cu-Ti Alloys/ Charakterystyki Plastyczności Odkształcanych Na Gorąco Stopów Cu-Ti

2014 ◽  
Vol 59 (4) ◽  
pp. 1307-1312 ◽  
Author(s):  
A. Szkliniarz ◽  
L. Blacha ◽  
W. Szkliniarz ◽  
J. Łabaj
Keyword(s):  
Flow Stress ◽  
Strain Rate ◽  
Hot Deformation ◽  
Maximum Flow ◽  
Rate Reduction ◽  
Flow Curves ◽  
Uniform Deformation ◽  
Ti Alloys ◽  
Strain And Strain Rate ◽  
Temperature Strain

Abstract In the paper, results of a study on the effects of deformation conditions (temperature, strain and strain rate) on flow curves, maximum flow stress and corresponding deformation of Cu-Ti alloys with various Ti contents, subjected to hot deformation, are presented. Evaluation of formability of alloys was performed with the use of a Gleeble HDS-V40 thermal-mechanical simulator during uniaxial hot compression at 700 to 900°C, strain rate of 0.1 to 10.0 s-1 and strain of 0 to 1.2 (70%). It was found that within the analysed ranges of temperature, strain rate and strain, Cu-Ti alloys underwent uniform deformation without cracking. The largest deformation resistances were observed for the alloys with the highest Ti contents; their decrease was possible with the temperature raise and the strain rate reduction.

A Study of the Effect of Extrusion Parameters on the Properties of Extruded Zr-2.5Nb Pressure Tubes

2012 ◽  
Vol 585 ◽  
pp. 371-375
Author(s):  
Nachiket Keskar ◽  
Vikrant Raizada ◽  
Vaibhaw Kumar ◽  
Sanjay Kumar Jha ◽  
Dinesh Srivastava ◽  
...  
Keyword(s):  
Flow Stress ◽  
Strain Rate ◽  
Extrusion Process ◽  
Phase Region ◽  
Work Piece ◽  
Two Phase ◽  
Strain And Strain Rate ◽  
Transus Temperature ◽  
Flow Stress Data ◽  
Temperature Strain

The hot extrusion of Zr-2.5Nb alloy has been simulated using an FEM based software and validated by the experimental measurements during real extrusion process. The flow stress data for Zr-2.5Nb alloy at different temperatures, strain and strain rates were generated by hot compression testing on Gleeble Machine. The flow stress data, obtained both below β transus temperature in two phase α+β region as well as above β transus temperature in β phase region, were directly used in the FEM simulation of extrusion process, eliminating the need for any assumptions regarding material plastic flow law. Two important extrusion parameters, viz. included die angle and reduction ratio, were varied and for each set of conditions, temperature, strain and strain rate at different nodal points of the tube at different stages of extrusion were calculated. The extrusion parameters were optimized to obtain minimum variation in the force, temperature, strain and strain rate in the extruded product. A fair agreement has been found between the measured values of the applied ram force and the temperature profile at the die landing area in a 3780 ton horizontal extrusion press and those obtained through simulations. The effect of the friction and heat transfer coefficient between the die chamber and work piece was also investigated in this study.

Effect of shock wave compression on luminescent properties of ?-quartz

1969 ◽  
Vol 11 (5) ◽  
pp. 1399-1402
Author(s):  
A. I. Lapshin ◽  
V. S. Lysakov ◽  
A. I. Serebrennikov
Keyword(s):  
Shock Wave ◽  
Luminescent Properties ◽  
Wave Compression ◽  
Shock Wave Compression

Shock-wave compression of a porous material

2004 ◽  
Vol 95 (4) ◽  
pp. 1760-1769 ◽  
Author(s):  
A. D. Resnyansky ◽  
N. K. Bourne
Keyword(s):  
Shock Wave ◽  
Porous Material ◽  
Wave Compression ◽  
Shock Wave Compression
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