Resistance of Plasma Nitrided Austenitic Stainless Steel AISI 304 (X5CrNi18 10)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F20%3APU137735" target="_blank" >RIV/00216305:26220/20:PU137735 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Resistance of Plasma Nitrided Austenitic Stainless Steel AISI 304 (X5CrNi18 10)

Popis výsledku v původním jazyce

In this paper, austenitic stainless steel AISI 304 (X5CrNi 18 10) has been subjected to lowtemperature plasma nitriding (LTPN) at 400 °C (673 K) in 24H2:8N2 (l/h) and in the reverse working atmosphere of 8H2:24N2 (l/h) marked as LTPN-R, and additionally to high-temperature plasma nitriding (HTPN) at 550 °C (823 K) in 24H2:8N2 (l/h) working atmosphere, for 15h for all PN processes. The microstructure, microhardness, and phase evaluation of the nitrided steel were studied. Nitrogen expanded austenite γN and Fe3N was identified after the LTPN process. After LTPN-R the γN, Fe2N, Fe3N, Fe4N, CrN, and Cr2N phases were identified. The HTPN process led to the formation of an increased volume of αFe, Fe3N Fe4N, and CrN phases. The LTPN techniques led to an increase of surface hardness, from initial 186 ± 3 HV1 (untreated steel) to 281 ± 15 HV1 (for LTPN and LTPN-R). The highest surface hardness reached the HTPN process (734 ± 5 HV1), thanks to the formation of CrN, Fe3N, and Fe4N rich nitride layer on the surf

Název v anglickém jazyce

Resistance of Plasma Nitrided Austenitic Stainless Steel AISI 304 (X5CrNi18 10)

Popis výsledku anglicky

In this paper, austenitic stainless steel AISI 304 (X5CrNi 18 10) has been subjected to lowtemperature plasma nitriding (LTPN) at 400 °C (673 K) in 24H2:8N2 (l/h) and in the reverse working atmosphere of 8H2:24N2 (l/h) marked as LTPN-R, and additionally to high-temperature plasma nitriding (HTPN) at 550 °C (823 K) in 24H2:8N2 (l/h) working atmosphere, for 15h for all PN processes. The microstructure, microhardness, and phase evaluation of the nitrided steel were studied. Nitrogen expanded austenite γN and Fe3N was identified after the LTPN process. After LTPN-R the γN, Fe2N, Fe3N, Fe4N, CrN, and Cr2N phases were identified. The HTPN process led to the formation of an increased volume of αFe, Fe3N Fe4N, and CrN phases. The LTPN techniques led to an increase of surface hardness, from initial 186 ± 3 HV1 (untreated steel) to 281 ± 15 HV1 (for LTPN and LTPN-R). The highest surface hardness reached the HTPN process (734 ± 5 HV1), thanks to the formation of CrN, Fe3N, and Fe4N rich nitride layer on the surf

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů