Characteristic Features of Ultrafine-Grained Ti-45 wt.% Nb Alloy under High Cycle Fatigue

Mairambekova, A. M.; Eroshenko, A. Yu.; Oborin, Vladimir; Bannikov, Mikhail; Chebodaeva, Valentina V.; Terekhina, A. I.; Naimark, Oleg; Дмитриев, А. И.; Sharkeev, Yurii P.

doi:10.3390/ma14185365

Cited by 3 publications

(2 citation statements)

References 53 publications

(103 reference statements)

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“…As has been shown in Refs. [37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56], despite the absence of external signs of deformation, the shear bands are formed at different stages of deformation. In the same works, it was noted that the accumulation and dissipation of energy develop non-linearly and depend on the loading conditions.…”

Section: Introductionmentioning

confidence: 99%

“…In the same works, it was noted that the accumulation and dissipation of energy develop non-linearly and depend on the loading conditions. It should however be noted that investigations of deformation processes by IR thermography were carried out mainly on steels, aluminum, and titanium alloys in the coarse-grained state [37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56].…”

Section: Introductionmentioning

confidence: 99%

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Influence of Severe Plastic Deformation by Extrusion on Microstructure, Deformation and Thermal Behavior under Tension of Magnesium Alloy Mg-2.9Y-1.3Nd

Легостаева

Eroshenko

Вавилов

et al. 2023

Metals

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The microstructural investigation, mechanical properties, and accumulation and dissipation of energies of the magnesium alloy Mg-2.9Y-1.3Nd in the recrystallized state and after severe plastic deformation (SPD) by extrusion are presented. The use of SPD provides the formation of a bimodal structure consisting of grains with an average size 15 µm and of ultrafine-grained grains with sizes less than 1 µm and volume fractions up to 50%, as well as of the fine particles of the second Mg24Y5 phases. It is established that grain refinement during extrusion is accompanied by an increase of the yield strength, increase of the tensile strength by 1.5 times, and increase of the plasticity by 1.8 times, all of which are due to substructural hardening, redistribution of the phase composition, and texture formation. Using infrared thermography, it was revealed that before the destruction of Mg-2.9Y-1.3Nd in the recrystallized state, there is a sharp jump of temperature by 10 °C, and the strain hardening coefficient becomes negative and amounts to (−6) GPa. SPD leads to a redistribution of thermal energy over the sample during deformation, does not cause a sharp increase in temperature, and reduces the strain hardening coefficient by 2.5 times.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of Severe Plastic Deformation by Extrusion on Microstructure, Deformation and Thermal Behavior under Tension of Magnesium Alloy Mg-2.9Y-1.3Nd

Легостаева

Eroshenko

Вавилов

et al. 2023

Metals

Self Cite

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Mechanical properties and behavior of the Ti–45Nb alloy subjected to extreme conditions

Zagorac,

Prasad,

Škundrić

et al. 2024

CrystEngComm

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Fatigue Behavior and Fracture Features of Ti-15Mo Alloy in β-, (α + β)-, and Ultrafine-Grained Two-Phase States

Gatina

Polyakova

Modina

et al. 2023

Metals

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The influence of the ultrafine-grained structure formed by equal-channel angular pressing via the “Conform” scheme on the fatigue behavior of metastable β-alloy Ti-15Mo has been studied. It is shown that the alloy with a two-phase ultrafine-grained structure achieved the best mechanical properties and enhanced fatigue endurance limit (up to 710 MPa on the basis of 107 cycles) due to the total contribution of grain boundary, dislocation, and phase strengthening mechanisms. A fractographic analysis of the fracture surface of samples after fatigue tests showed the features of fatigue crack propagation depending on the type of alloy microstructure. The general and distinctive features of fatigue failure of alloy samples in the initial coarse-grained (α + β)-, single-phase coarse-grained β-, and ultrafine-grained (α + β)-states are revealed. In all of the samples, a fatigue crack nucleated on the surface and propagated downward, i.e., perpendicular to the direction of the applied pressures. It is shown that fracture surfaces of the ultrafine-grained samples had a high roughness and were characterized by the presence of a large number of secondary cracks, as compared to the coarse-grained analogues.

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Characteristic Features of Ultrafine-Grained Ti-45 wt.% Nb Alloy under High Cycle Fatigue

Cited by 3 publications

References 53 publications

Influence of Severe Plastic Deformation by Extrusion on Microstructure, Deformation and Thermal Behavior under Tension of Magnesium Alloy Mg-2.9Y-1.3Nd

Influence of Severe Plastic Deformation by Extrusion on Microstructure, Deformation and Thermal Behavior under Tension of Magnesium Alloy Mg-2.9Y-1.3Nd

Mechanical properties and behavior of the Ti–45Nb alloy subjected to extreme conditions

Fatigue Behavior and Fracture Features of Ti-15Mo Alloy in β-, (α + β)-, and Ultrafine-Grained Two-Phase States

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