Prediction of crystallographic texture evolution and anisotropic stress-strain response during large plastic deformation in [alpha]-titanium alloys

2021 ◽  
Author(s):  
Xianping Wu
Keyword(s):  
Plastic Deformation ◽  
Titanium Alloys ◽  
Crystallographic Texture ◽  
Texture Evolution ◽  
Strain Response ◽  
Large Plastic Deformation ◽  
Stress Strain ◽  
Anisotropic Stress ◽  
Alpha Titanium

Efficiency of Microstructure Refinement in Ti-Based Alloys

2021 ◽  
Vol 1016 ◽  
pp. 1753-1758
Author(s):  
Sergey Zherebtsov ◽  
Nikita Stepanov ◽  
Gennady Salishchev
Keyword(s):  
Plastic Deformation ◽  
Chemical Composition ◽  
Titanium Alloys ◽  
Microstructure Evolution ◽  
Large Plastic Deformation ◽  
Two Phase ◽  
Microstructure Refinement ◽  
Kinetics Of ◽  
Rate Type ◽  
Lamellar Type

The influence of various factors on the efficiency of microstructure refinement in two-phase titanium alloys with respect to a well-known Ti-6Al-4V alloy was discussed. The kinetics of microstructure evolution in titanium alloys with a lamellar type α/β microstructure during large plastic deformation depends mainly on temperature and strain rate, type of the initial microstructure, thickness of the α lamellae, path of deformation and chemical composition. Each parameter should be controlled to provide the most efficient microstructure refinement during conventional metalforming methods.

Application of the VPSC Model to the Description of the Stress–Strain Response and Texture Evolution in AZ31 Mg for Various Strain Paths

2015 ◽  
Vol 137 (4) ◽  
Author(s):  
Nitin Chandola ◽  
Raja K. Mishra ◽  
Oana Cazacu
Keyword(s):  
Mechanical Response ◽  
Mechanical Test ◽  
Texture Evolution ◽  
Mean Field ◽  
Strain Curve ◽  
Temperature Deformation ◽  
Strain Response ◽  
Stress Strain ◽  
Self Consistent ◽  
Strain Paths

Accurate description of the mechanical response of AZ31 Mg requires consideration of its strong anisotropy both at the single crystal and polycrystal levels, and its evolution with accumulated plastic deformation. In this paper, a self-consistent mean field crystal plasticity model, viscoplastic self-consistent (VPSC), is used for modeling the room-temperature deformation of AZ31 Mg. A step-by-step procedure to calibrate the material parameters based on simple tensile and compressive mechanical test data is outlined. It is shown that the model predicts with great accuracy both the macroscopic stress–strain response and the evolving texture for these strain paths used for calibration. The stress–strain response and texture evolution for loading paths that were not used for calibration, including off-axis uniaxial loadings and simple shear, are also well described. In particular, VPSC model predicts that for uniaxial tension along the through-thickness direction, the stress–strain curve should have a sigmoidal shape.

Polycrystalline plasticity and the evolution of crystallographic texture in FCC metals

1992 ◽  
Vol 341 (1662) ◽  
pp. 443-477 ◽  
Keyword(s):  
Finite Element ◽  
Crystallographic Texture ◽  
Single Phase ◽  
Type Model ◽  
Strain Response ◽  
Stress Strain ◽  
Fcc Metals ◽  
First Order ◽  
Finite Element Calculations ◽  
Simple Compression

A Taylor-type model for large deformation polycrystalline plasticity is formulated and evaluated by comparing the predictions for the evolution of crystallographic texture and the stress-strain response in simple compression and tension, plane strain compression, and simple shear of initially ‘isotropic’ OFHC copper against ( a ) corresponding experiments, and ( b ) finite element simulations of these experiments using a multitude of single crystals with accounting for the satisfaction of both compatibility and equilibrium. Our experiments and calculations show that the Taylor-type model is in reasonable first-order agreement with the experiments for the evolution of texture and the overall stress-strain response of single-phase copper. The results of the finite element calculations are in much better agreement with experiments, but at a substantially higher computational expense.

Anisotropic stress–strain response and microstructure evolution of textured α-uranium

2012 ◽  
Vol 60 (2) ◽  
pp. 702-715 ◽  
Author(s):  
Marko Knezevic ◽  
Laurent Capolungo ◽  
Carlos N. Tomé ◽  
Ricardo A. Lebensohn ◽  
David J. Alexander ◽  
...  
Keyword(s):  
Microstructure Evolution ◽  
Strain Response ◽  
Stress Strain ◽  
Anisotropic Stress
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