Kinetics of Microstructure Refinement in Titanium Alloys during Deformation

2016 ◽  
Vol 879 ◽  
pp. 2280-2285
Author(s):  
Sergey Zherebtsov ◽  
Maxim Ozerov ◽  
Margarita Kimova ◽  
Gennady Salishchev
Keyword(s):  
Titanium Alloys ◽  
Microstructure Evolution ◽  
Deformation Behavior ◽  
Deformation Twinning ◽  
Commercial Purity ◽  
Two Phase ◽  
Microstructure Refinement ◽  
Commercial Purity Titanium ◽  
Interphase Boundaries ◽  
Kinetics Of

The effect of various factors on the kinetics of microstructure evolution in commercial-purity titanium and two-phase Ti-6Al-4V alloy during deformation was studied. The kinetics of microstructure refinement can be raised via intensification of deformation twinning. In two-phase titanium alloys the kinetics of spheroidization can be increased considerably by decrease in the thickness of initial α lamellae. The influence of interphase boundaries energy on deformation behavior was discussed with respect to Ti-6Al-4V and Ti/TiB alloys.

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.

Advances in Ambient Temperature Creep Deformation Behavior of Two-Phase Titanium Alloys

2005 ◽  
Vol 475-479 ◽  
pp. 779-784 ◽  
Author(s):  
A. Jaworski ◽  
Sreeramamurthy Ankem
Keyword(s):  
Titanium Alloys ◽  
Creep Deformation ◽  
Deformation Behavior ◽  
Creep Resistance ◽  
Volume Fraction ◽  
Beta Phase ◽  
Two Phase ◽  
Number Of Factors ◽  
Strength Difference ◽  
The Stability

In recent years, significant advances have been made in regard to the creep deformation behavior of two phase titanium alloys. It has been shown that the creep resistance depends on a number of factors, including the shape of the component phases, the strength difference between the phases, and the stability of the beta phase. For example, in two-phase materials with a similar volume fraction and morphology of phases, if the beta phase is less stable, then the creep resistance is lower. These developments will be reviewed and the reasons for such effects will be suggested.

scholarly journals The Influence of Grain Size on Twinning and Microstructure Refinement During Cold Rolling of Commercial-Purity Titanium

2016 ◽  
Vol 47 (10) ◽  
pp. 5101-5113 ◽  
Author(s):  
S. V. Zherebtsov ◽  
G. S. Dyakonov ◽  
G. A. Salishchev ◽  
A. A. Salem ◽  
S. L. Semiatin
Keyword(s):  
Grain Size ◽  
Cold Rolling ◽  
Commercial Purity ◽  
Microstructure Refinement ◽  
Commercial Purity Titanium ◽  
Purity Titanium

Production, Properties and Application of Ultrafine-Grained Titanium Alloys

2016 ◽  
Vol 838-839 ◽  
pp. 294-301 ◽  
Author(s):  
Sergey Zherebtsov ◽  
Gennady Salishchev
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Titanium Alloys ◽  
Structure Formation ◽  
Temperature Interval ◽  
Two Phase ◽  
Homogeneous Microstructure ◽  
Wide Temperature Interval ◽  
Ultrafine Grained ◽  
Kinetics Of

Some features ofstructure, way of production and mechanical properties of titanium andtwo-phase titanium alloys with ultrafine-grained (UFG) microstructure werediscussed. Various methods of UFG structure formation was considered andoptimal conditions for attaining of a homogeneous microstructure with thesmallest grain size were determined. The kinetics of microstructure evolutionin titanium and two-phase titanium alloys during large (severe) plasticdeformation in a wide temperature interval and the mechanisms of ultrafinegrain formation were analyzed. The influence of grain size on static mechanicalproperties was determined. Significantly reduced temperatures of superplasticforming of the UFG conditions were shown. Some examples of practical applicationsof the UFG two-phase titanium alloys were discussed.

Mechanical Behaviour and Microstructure Evolution of Severely Deformed Two-Phase Titanium Alloys

2008 ◽  
Vol 584-586 ◽  
pp. 771-776 ◽  
Author(s):  
Sergey V. Zherebtsov ◽  
Sergey Mironov ◽  
Maria A. Murzinova ◽  
S. Salishchev ◽  
S. Lee Semiatin
Keyword(s):  
Titanium Alloys ◽  
Microstructure Evolution ◽  
High Strain ◽  
Beta Phase ◽  
Alpha Phase ◽  
Steady State Flow ◽  
Two Phase ◽  
Globular Microstructure ◽  
Flow Response ◽  
Alpha Beta

Microstructure evolution and mechanical behavior of alpha/beta Ti-6Al-4V (VT6) and near-beta Ti-5Al-5Mo-5V-1Cr-1Fe (VT22) titanium alloys during uniaxial compression at 600°C to a high strain of 70% was studied. The plastic-flow response for both alloys is characterized by successive stages of strain hardening, flow softening, and steady-state flow. During compression the lamellae spheroidized to produce a partially globular microstructure. Globularization in VT6 is associated with the loss of the initial Burgers-type coherency between the alpha and beta phases and the subsequent individual deformation of each phase. The misorientations of boundaries increase to the high-angle range by means of the accumulation of lattice dislocations. In VT22 alloy the alpha phase evolves similar to that in VT6 alloy, while in the beta phase mainly low-angle boundaries are observed even after 70 pct. reduction.

scholarly journals Microstructure evolution of commercial-purity titanium during cryorolling

2015 ◽  
Vol 116 (2) ◽  
pp. 182-188 ◽  
Author(s):  
G. S. D’yakonov ◽  
S. V. Zherebtsov ◽  
M. V. Klimova ◽  
G. A. Salishchev
Keyword(s):  
Microstructure Evolution ◽  
Commercial Purity ◽  
Commercial Purity Titanium ◽  
Purity Titanium
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