Structural Features of the Cr-V Ledeburitic Steel Saturated by Nitrogen

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F45807698%3A_____%2F03%3A00009344" target="_blank" >RIV/45807698:_____/03:00009344 - 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

Structural Features of the Cr-V Ledeburitic Steel Saturated by Nitrogen

Popis výsledku v původním jazyce

The P/M made VANADIS 6 cold work steel was plasma nitrided at various combinations of the temperature and dwell time. Before the plasma nitriding, the material consists of the matrix containing both the twinned and the dislocation martensite, and two types of carbides. The first type was identified as the MC-phase and the second one as M7C3-carbide. Plasma nitriding led to the increase of both the surface hardness and the microhardness, due to the nitrogen saturation of thin near surface region. Firstly, the martensite is saturated by nitrogen, up to the solid solubility limit. If the solid solubility limit is exceeded, various nitrides like the Fe4N- and Fe3N-phase are formed. When the highest processing temperature and longer time are applied, also the CrN-phase formation results from the processing. The occurrence of nitrogen enriched region at the surface increases the wear resistance. On the other hand, the fracture toughness drops down dramatically.

Název v anglickém jazyce

Structural Features of the Cr-V Ledeburitic Steel Saturated by Nitrogen

Popis výsledku anglicky

The P/M made VANADIS 6 cold work steel was plasma nitrided at various combinations of the temperature and dwell time. Before the plasma nitriding, the material consists of the matrix containing both the twinned and the dislocation martensite, and two types of carbides. The first type was identified as the MC-phase and the second one as M7C3-carbide. Plasma nitriding led to the increase of both the surface hardness and the microhardness, due to the nitrogen saturation of thin near surface region. Firstly, the martensite is saturated by nitrogen, up to the solid solubility limit. If the solid solubility limit is exceeded, various nitrides like the Fe4N- and Fe3N-phase are formed. When the highest processing temperature and longer time are applied, also the CrN-phase formation results from the processing. The occurrence of nitrogen enriched region at the surface increases the wear resistance. On the other hand, the fracture toughness drops down dramatically.

Druh

D - Stať ve sborníku

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

<a href="/cs/project/GA106%2F01%2F0180" target="_blank" >GA106/01/0180: Mechanismus a kinetika sycení multifázové Fe - C - Cr - V oceli dusíkem</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2003

Kód důvěrnosti údajů

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

Název statě ve sborníku

11th Conference on Materials and Technology, book of abstracts

ISBN

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ISSN

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e-ISSN

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Počet stran výsledku

1

Strana od-do

11-11

Název nakladatele

Institute of materials and technology

Místo vydání

Ljubljana

Místo konání akce

Portorož

Datum konání akce

1. 10. 2003

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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