Mechanism of internal stress formation in titanium alloy samples, obtained by additive manufacturing

Грушин, И. А.; German, M. A.; Kuzmina, D. A.

doi:10.1088/1742-6596/1396/1/012020

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2022

2024

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“…The transverse dimensions of cracks vary from 2 to 5 μm. The reason for the formation of cracks, apparently, is the high level of residual stresses that persist in the surface layer of the nitride coating after deposition, which further increase during the hydrogenation annealing [14,15].…”

Section: Resultsmentioning

confidence: 99%

Influence of the Titanium Nitride Deposition Duration during Vacuum Ion-Plasma Treatment on the Resistance of Coatings in a Hydrogen Atmosphere

Гвоздева

Shalin

Stepushin

et al. 2022

KEM

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In this work, the insulating properties of nitride coatings against the hydrogen penetration into semi-finished or finished products made of VT6 titanium alloy during hydrogenation annealing have been studied. It has been established that an increase of the duration of titanium nitride deposition for more than 30 minutes leads to the formation of pores and cracks in the coating and, as a consequence, to a decrease in the «protective» properties of such coating. It is shown that during linear gradient structure creation, the nitride coating effectively “protects” alloy from penetration of up to 0.5 wt%. of hydrogen.

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Section: Resultsmentioning

confidence: 99%