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231213|2022 ru s a eng d |
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|a 10.22226/2410-3535-2022-4-282-286
|2 doi
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|a koha001016043
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|b rus
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|a Effect of carbon alloying on hydrogen embrittlement of a Cantor alloy
|c M. Yu. Panchenko, E. V. Melnikov, D. Yu. Gurtova, E. G. Astafurova
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|a Текст
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|a электронный
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|a Библиогр.: 31 назв.
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|a We have investigated the effect of hydrogen-charging on the mechanical properties and fracture mechanisms of high-entropy alloys Fe20Mn20Cr20Ni20Co20 and Fe20Mn20Cr20Ni20Co19C1 (at.%). Both alloys have a coarse-grained single-phase face-centered cubic (fcc) structure. It was found that doping with carbon decreases the content of hydrogen absorbed by the specimens during electrochemical hydrogen-charging (in a 3 % NaCl water solution, at j =10 mA / cm2 for 50 h): 134 wppm and 63 wppm for carbon-free and carbon-doped alloy, respectively. Hydrogen-charging contributes to an increase in the yield strength and a decrease in the ductility of the alloys. Despite the lower concentration of dissolved hydrogen, the hydrogen-associated solid-solution strengthening of the carbon-doped alloy is higher than that in the interstitial-free alloy. The hydrogen embrittlement index, IH =17 %, for carbon-alloyed specimens is lower than IH = 25 % for interstitial-free specimens. In both alloys, the hydrogen-affected surface layers of the specimens fracture in a similar brittle mode — intergranular fracture dominates.
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|a водородное охрупчивание
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|a высокоэнтропийные сплавы
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|a межузельное упрочнение
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|a углерод
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|a разрушение
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|a статьи в журналах
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|a Panchenko, M. Yu.
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|a Melnikov, E. V.
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|a Gurtova, D. Yu.
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|a Astafurova, Elena G.
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|t Письма о материалах
|d 2022
|g Т. 12, № 4. С. 282-286
|x 2218-5046
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|a RU-ToGU
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|u http://vital.lib.tsu.ru/vital/access/manager/Repository/koha:001016043
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|a статья
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|c 1016043
|d 1016043
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