Effect of Crystal Lattice Parameters of Surface Gas-Saturated Layers on Ductility of Titanium Alloys Under Tensile Tests

Kalienko, M. S.; Волков, А. В.; Zhelnina, A. V.; Ледер, М. О.; Panfilov, Peter

doi:10.1007/s11041-019-00451-w

Cited by 3 publications

(1 citation statement)

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“…In this study, we have shown a good correla on of data obtained by XRD and NMA methods. Ul mately, the difference in oxygen concentra on in gas-rich layer determines the deforma on behavior of the alloys [32,33], increasing oxygen concentra on in gas-rich layer leads to reduc on of duc lity of the oxidized alloys un l completely bri�le fracture in the elas c por on of load diagram. For example, VT18U and Ti6Al7Nb alloys in the oxidized condi on studied herein demonstrate tensile elonga on of 4.6 % and 13.2 % [32] respec vely due to the significant difference in oxygen concentra on in gas-rich layer (difference of concentra on near the oxide/metal interface 5 wt.…”

Section: Discussionmentioning

confidence: 98%

Study of oxygen content in titanium alloys after exposure at elevated temperature

Kalienko

Волков²,

Ледер³

et al. 2020

MATEC Web Conf.

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Isothermal oxidation testing of near α titanium alloys VT18U, VT20, Ti6Al7Nb and Ti6242S was performed in air at 560 °С for 1000 hours. Parameters of diffusion layer on the alloy surfaces were studied by microhardness indentations, optical microscopy, X-ray diffraction analysis and nuclear microanalysis. It was established that concentration of oxygen in diffusion layer of tested alloys after oxidation differs significantly. An approach was demonstrated and validated by nuclear microanalysis data that allows comparative evaluation of the total concentration of interstitial impurities in the diffusion layer by the X-ray diffraction method.

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Section: Discussionmentioning

confidence: 98%