High-temperature plastic flow behaviour in the binder of WC-Co cemented carbides

1996 ◽  
Vol 2 (2) ◽  
pp. 97-101 ◽  
Author(s):  
In-Chul Lee
Keyword(s):  
High Temperature ◽  
Plastic Flow ◽  
Flow Behaviour ◽  
Cemented Carbides

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

Modelling of Flow Behaviour of Magnesium Alloys

2016 ◽  
Vol 716 ◽  
pp. 360-367
Author(s):  
Carlo Bruni
Keyword(s):  
Numerical Simulation ◽  
High Temperature ◽  
Low Temperature ◽  
Magnesium Alloys ◽  
Flow Curve ◽  
Flow Behaviour ◽  
Temperature Deformation ◽  
Flow Curves ◽  
High Deformation ◽  
Modelling Approach

The present investigation aims at studying the flow behaviour of magnesium alloys under different conditions in terms of temperature, deformation velocities and deformation. The modelling approach was based on a proposed equation to model the shape of each flow curve through different variables. The modelled flow curves were subsequently compared with those obtained with experiments. The models were validated on flow curves not used in the building stage. It was observed that, for low temperature values, high deformation velocities and deformations the final part of the flow curve has to be adapted in order to be adopted for the description of material in the numerical simulation. In other words it needs to be extrapolated. Also for the high temperature, the flow softening has to be limited in order to allow the extrapolation queue required for elevated deformations. The deformation value at which the extrapolation can start can be predicted with an other proposed equation detailed in the paper.

Synchroshear Versus Conventional Shear Mechanisms in Transitionmetal Disilicides with the C40 Structure

1999 ◽  
Vol 578 ◽  
Author(s):  
H. Inui ◽  
M. Yamaguchi
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Plastic Flow ◽  
Deformation Mechanism ◽  
Deformation Behavior ◽  
Basal Slip ◽  
Room Temperature ◽  
Onset Temperature ◽  
Factors Affecting ◽  
Temperature Group

AbstractThe deformation behavior of (0001) <1210> basal slip in single crystals of five different transitionmetal disilicides with the C40 structure has been investigated in the temperature range from room temperature to 1500°C in compression. These disilicides are found to be classified into two groups depending on the onset temperature for plastic flow. The low-temperature group, which consists of VSi2, NbSi2 and TaSi2, exhibits the onset temperature for plastic flow around 0.3 T/Tm (melting temperature) and deforms by a conventional shear mechanism. In contrast, the high temperature group, which consists of CrSi2 and Mo(Si,Al)2, exhibits the onset temperature around 0.6T/Tm and deforms by a synchroshear mechanism. Factors affecting the deformation mechanism in these C40 disilicides are discussed in terms of directionality of atomic bonding and the relative stability of the C40 phase with respect to the C11b phase.

A New Constitutive Model Describing the Plastic Flow of Metals: Application to the AA6082 Aluminum Alloy

2013 ◽  
Vol 585 ◽  
pp. 59-66 ◽  
Author(s):  
Mohamad El Mehtedi ◽  
Samer El Mohtadi ◽  
Stefano Spigarelli
Keyword(s):  
Aluminum Alloy ◽  
High Temperature ◽  
Strain Rate ◽  
Plastic Flow ◽  
Temperature Regime ◽  
High Strain ◽  
Constitutive Relationship ◽  
Constitutive Analysis ◽  
Solute Atoms ◽  
Low Strain Rate

A new constitutive relationship based on the combination of the Garofalo and Hensel-Spittel equations has been developed and successfully used to model the plastic flow of a AA6082 aluminum alloy. Two regimes of temperature and strain rate were identified: the constitutive analysis suggested that in the low strain rate/high temperature regime, deformation was controlled by viscous glide of dislocations in atmospheres of Mg solute atoms, while in the high strain rate/ low temperature regime, deformation was controlled by climb.

Sign in / Sign up

Export Citation Format

Share Document