Letters on Materials - journal on science of materials and solid state physics

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Superplastic properties of titanium alloys with coarse-grained (CG) and ultrafine-frained (UFG) structure

Regularities in superplasticity of titanium alloys depending on their initial structure and phase composition

I.V. Ratochka, E.V. Naydenkin, I.P. Mishin, O.N. Lykova

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Year: 2018

Volume: 8 Issue: 4s

Pages: 543-548

ECAP-processed Zn-22Al and Zn-0.3Al alloys were subjected to long-term natural aging up to 1100 days to evaluate the effect of long-term natural aging on their microstructures and superplastic behaviors. Decrease in the maximum elongation of Zn-22Al alloy is quite low comparing to its ECAP-processed condition while Zn-0.3Al alloy loses more than half of its superplastic elongation at the end of the natural aging.

Effect of long-term natural aging on microstructure and room temperature superplastic behavior of UFG/FG Zn-Al alloys processed by ECAP

M. Demirtas, H. Yanar, G. Purcek

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Year: 2018

Volume: 8 Issue: 4s

Pages: 532-537

To bridge the gap between the ideal case of steady-state for superplasticity and the realistic case of deviation from this, the parameters of constitutive relationship should include the instantaneous microstructure and consider effective stress for deformation instead of applied stress

Understanding the Concurrent Microstructural Evolution and Its Impact on Superplastic Characteristics: An overview

B.P. Kashyap

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Year: 2018

Volume: 8 Issue: 4s

Pages: 524-531

Current issue

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A method for the construction of initial atomic models of nanocrystals with extrinsic dislocations in grain boundaries for molecular dynamics simulations is developed. The method is used to determine atomic structures and energies of grain boundaries in columnar f.c.c. nanocrystals with [112] column axis.

A method for the construction of initial structures for molecular dynamics simulations of nanocrystals with nonequilibrium grain boundaries containing extrinsic dislocations

A.A. Nazarov, R.T. Murzaev

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Year: 2018

Volume: 8 Issue: 1

Pages: 5-10

The recrystallization mechanism after ECP was deduced to be similar to that operating during conventional static annealing. The microstructural changes were explained in terms of Joule heating and similar observations for static recrystallization.

Effect of electric-current pulses on structural changes in cold rolled copper at different initial temperatures

I.S. Valeev, A.K. Valeeva

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Year: 2018

Volume: 8 Issue: 1

Pages: 100-104

Oscillations of kinetic temperature in harmonic triangular lattice with random initial velocities.

Temperature oscillations in harmonic triangular lattice with random initial velocities

V. Kuzkin, V. Tsaplin

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Year: 2018

Volume: 8 Issue: 1

Pages: 16-20

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Assembling of pseudo-graphene from grain boundaries with structural units 5-7.

Disclinations in polycrystalline graphene and pseudo-graphenes. Review

A.E. Romanov, M.A. Rozhkov, A.L. Kolesnikova

PDF Review

Year: 2018

Volume: 8 Issue: 4

Pages: 384-400

Hatching distance effects on microstructure of additively manufactured specimens. Increased hatching distance speed up the manufacturing process, but the porosity level also increases. Reduced hatching distance results in overheating and bubbling of the printed material.
The small distance between parts during manufacturing can compensate the increased hatching distance.

Effect of the hatching strategies on mechanical properties and microstructure of SEBM manufactured Ti-6Al-4V specimens

Popov Jr. Vladimir V., A. Katz-Demyanetz, A. Kovalevsky, R. Biletskiy, E. Strokin, A. Garkun, M. Bamberger

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Year: 2018

Volume: 8 Issue: 4

Pages: 468-472

The combined treatment DCAP + aging 400°С + SPD by friction of the Cu–0.09Cr–0.08Zr SMC alloy gives rise to the friction-induced nanocrystalline structure with grains 15– 60 nm in size in the surface-layer material, which provides a high level of the microhardness and satisfactory tribological properties.

The formation of friction-induced nanocrystalline structure in submicrocrystalline Cu-Cr-Zr alloy рrocessed by DCAP

I.V. Khomskaya, A.E. Kheifets, V.I. Zel'dovich, L.G. Korshunov, N.Y. Frolova, D.N. Abdullina

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Year: 2018

Volume: 8 Issue: 4

Pages: 410-414

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Latest articles

Regularities in superplasticity of titanium alloys depending on their initial structure and phase composition

Effect of long-term natural aging on microstructure and room temperature superplastic behavior of UFG/FG Zn-Al alloys processed by ECAP

Understanding the Concurrent Microstructural Evolution and Its Impact on Superplastic Characteristics: An overview

Selected papers

A method for the construction of initial structures for molecular dynamics simulations of nanocrystals with nonequilibrium grain boundaries containing extrinsic dislocations

Effect of electric-current pulses on structural changes in cold rolled copper at different initial temperatures

Temperature oscillations in harmonic triangular lattice with random initial velocities

Most viewed

Disclinations in polycrystalline graphene and pseudo-graphenes. Review

Effect of the hatching strategies on mechanical properties and microstructure of SEBM manufactured Ti-6Al-4V specimens

The formation of friction-induced nanocrystalline structure in submicrocrystalline Cu-Cr-Zr alloy рrocessed by DCAP

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