Heat treatment of nitrided layer formed on X37CrMoV5-1 hot working tool steel

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26316919%3A_____%2F17%3AN0000044" target="_blank" >RIV/26316919:_____/17:N0000044 - isvavai.cz</a>

Výsledek na webu

<a href="http://iopscience.iop.org/1757-899X/179/1/012013" target="_blank" >http://iopscience.iop.org/1757-899X/179/1/012013</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1757-899X/179/1/012013" target="_blank" >10.1088/1757-899X/179/1/012013</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Heat treatment of nitrided layer formed on X37CrMoV5-1 hot working tool steel

Popis výsledku v původním jazyce

The paper presents the technology consisting of combination of the nitriding process with subsequent austenitizing at temperature above eutectoid temperature of the Fe-C system and further rapid cooling. Such treatment will cause formation of the martensite in the area of the primarily nitrided layer and the additional precipitation hardening by tempering of heat treated steel. The article shows that the heat treatment process of nitrided layer formed on X37CrMoVS-1 steel leads to strengthening of surface layer, the substrate and the core of nitrided part. Heat treatment of nitrided steel with the tempering in inert (nitrogen) or active (ammonia) atmosphere can increase the thickness of the layer formed by short-term nitriding process. After the nitriding process of X37CrMoVS-1 steel the nitrided layer had a thickness of about 160 mu m, while a subsurface layer of iron nitrides had a thickness of 7 mu m. After subsequent quenching and tempering processes, the nitrided layer undergoes additional diffusion and its thickness is increased to about 220 mu m (inert atmosphere) or 280 mu m (active atmosphere). If the tempering process is carried out in an inert atmosphere, the primarily formed layer of iron nitrides disappears. Tempering in an active atmosphere leads to forming of white layer with a thickness of 7 mu m. Basic properties of nitrided layers formed in such way, like the hardness and the wear resistance, are presented.

Název v anglickém jazyce

Heat treatment of nitrided layer formed on X37CrMoV5-1 hot working tool steel

Popis výsledku anglicky

The paper presents the technology consisting of combination of the nitriding process with subsequent austenitizing at temperature above eutectoid temperature of the Fe-C system and further rapid cooling. Such treatment will cause formation of the martensite in the area of the primarily nitrided layer and the additional precipitation hardening by tempering of heat treated steel. The article shows that the heat treatment process of nitrided layer formed on X37CrMoVS-1 steel leads to strengthening of surface layer, the substrate and the core of nitrided part. Heat treatment of nitrided steel with the tempering in inert (nitrogen) or active (ammonia) atmosphere can increase the thickness of the layer formed by short-term nitriding process. After the nitriding process of X37CrMoVS-1 steel the nitrided layer had a thickness of about 160 mu m, while a subsurface layer of iron nitrides had a thickness of 7 mu m. After subsequent quenching and tempering processes, the nitrided layer undergoes additional diffusion and its thickness is increased to about 220 mu m (inert atmosphere) or 280 mu m (active atmosphere). If the tempering process is carried out in an inert atmosphere, the primarily formed layer of iron nitrides disappears. Tempering in an active atmosphere leads to forming of white layer with a thickness of 7 mu m. Basic properties of nitrided layers formed in such way, like the hardness and the wear resistance, are presented.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/LTE117006" target="_blank" >LTE117006: CRYONITRIDE - Inovace chemicko-tepelného zpracování tvářecích, kovacích a řezných nástrojů</a><br>

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název statě ve sborníku

4th International Conference Recent Trends in Structural Materials (COMAT 2016)

ISBN

—

ISSN

1757-8981

e-ISSN

—

Počet stran výsledku

8

Strana od-do

nestránkováno

Název nakladatele

IOP Publishing

Místo vydání

Bristol

Místo konání akce

Plzeň

Datum konání akce

9. 11. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000403407100013