Influence of strain rate and temperature on tensile stress–strain and work hardening behaviour of 9Cr–1Mo ferritic steel

2012 ◽  
Vol 538 ◽  
pp. 110-117 ◽  
Author(s):  
D.P. Rao Palaparti ◽  
B.K. Choudhary ◽  
E. Isaac Samuel ◽  
V.S. Srinivasan ◽  
M.D. Mathew
Keyword(s):  
Tensile Stress ◽  
Strain Rate ◽  
Work Hardening ◽  
Ferritic Steel ◽  
Stress Strain

Effects of temperature and strain rate on tensile stress–strain and workhardening behaviour of P92 ferritic steel

2013 ◽  
Vol 30 (8) ◽  
pp. 911-920 ◽  
Author(s):  
G. Sainath ◽  
B. K. Choudhary ◽  
J. Christopher ◽  
E. Isaac Samuel ◽  
M. D. Mathew
Keyword(s):  
Tensile Stress ◽  
Strain Rate ◽  
Ferritic Steel ◽  
Stress Strain ◽  
Effects Of Temperature

Tensile Stress-Strain Curves Modeling of Four Kinds of Solders with Temperature and Rate Dependence

2005 ◽  
Vol 297-300 ◽  
pp. 905-911 ◽  
Author(s):  
Xu Chen ◽  
Li Zhang ◽  
Masao Sakane ◽  
Haruo Nose
Keyword(s):  
Tensile Stress ◽  
Constitutive Model ◽  
Strain Rate ◽  
Constant Strain Rate ◽  
Tensile Tests ◽  
Strain Rate Range ◽  
Rate Dependence ◽  
Strain Rates ◽  
Stress Strain ◽  
Rate Range

A series of tensile tests at constant strain rate were conducted on tin-lead based solders with different Sn content under wide ranges of temperatures and strain rates. It was shown that the stress-strain relationships had strong temperature- and strain rate- dependence. The parameters of Anand model for four solders were determined. The four solders were 60Sn-40Pb, 40Sn-60Pb, 10Sn-90Pb and 5Sn-95Pb. Anand constitutive model was employed to simulate the stress-strain behaviors of the solders for the temperature range from 313K to 398K and the strain rate range from 0.001%sP -1 P to 2%sP -1 P. The results showed that Anand model can adequately predict the rate- and temperature- related constitutive behaviors at all test temperatures and strain rates.

Tensile stress–strain and work hardening behaviour of P9 steel for wrapper application in sodium cooled fast reactors

2012 ◽  
Vol 420 (1-3) ◽  
pp. 583-590 ◽  
Author(s):  
J. Christopher ◽  
B.K. Choudhary ◽  
E. Isaac Samuel ◽  
M.D. Mathew ◽  
T. Jayakumar
Keyword(s):  
Tensile Stress ◽  
Work Hardening ◽  
Fast Reactors ◽  
Stress Strain

Dynamic Tensile Characteristics of Nuclear-Grade Graphite IG-11

2014 ◽  
Vol 566 ◽  
pp. 61-66
Author(s):  
Takashi Yokoyama ◽  
Kenji Nakai
Keyword(s):  
Tensile Stress ◽  
Strain Rate ◽  
Fracture Strain ◽  
Testing Machine ◽  
Nuclear Grade ◽  
Dynamic Tests ◽  
Stress Strain ◽  
Fine Grained ◽  
Split Hopkinson ◽  
Static And Dynamic Tests

The effect of strain rate up to nearly = 102/s on the tensile stress-strain properties of isotropic fine-grained nuclear-grade graphite IG-11 was investigated. Cylindrical tensile specimens machined out of graphite bars were used in both static and dynamic tests. The dynamic tensile stress-strain curves up to fracture were determined using the split Hopkinson bar (SHB). The low and intermediate strain-rate tensile stress-strain relations up to fracture were measured on an Instron 5500R testing machine. It was demonstrated that the ultimate tensile strength increases slightly, while the fracture strain and absorbed energy up to fracture decrease dramatically with increasing strain rate. Macro and microscopic examinations revealed a slight difference in the fracture surfaces between the static and dynamic tension specimens.

Unified Tensile Work Hardening Behaviour of Thin Section Plate and Forged Thick Section 9Cr-1Mo Ferritic Steel

2013 ◽  
Vol 32 (3) ◽  
pp. 287-294
Author(s):  
B.K. Choudhary ◽  
E. Isaac Samuel ◽  
D.P. Rao Palaparti ◽  
J. Christopher ◽  
M.D. Mathew
Keyword(s):  
Plastic Strain ◽  
Strain Rate ◽  
Work Hardening ◽  
Ferritic Steel ◽  
True Stress ◽  
Rate Of Change ◽  
Plastic Strain Rate ◽  
True Plastic Strain ◽  
Temperature Regimes ◽  
Material Conditions

AbstractDetailed investigation has been performed on tensile work hardening behaviour in terms of the variations of instantaneous work hardening rate (θ = dσ/dεp, where σ is true stress and εp is true plastic strain) with stress and true plastic strain rate (ε̇p) for temperature range 300–873 K in two different material conditions, (i) normalised and tempered plate and (ii) quenched and tempered tubeplate forging of 9Cr-1Mo ferritic steel. Both plate and tubeplate forging exhibited two-stage work hardening and three different temperature regimes in the variation of θ with σ. The variations of θ with respect to ε̇p exhibited unified work hardening in terms of a single master curve independent of temperature and initial microstructure. θ varied linearly with reciprocal of plastic strain rate, i.e. 1/ε̇p, and as a consequence, linear correlation between the rate of change of true stress and true plastic strain rate independent of temperature and microstructure has been obtained.

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