Evaluation of the Effect of Different Plasma-Nitriding Parameters on the Properties of Low-Alloy Steel

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24210%2F17%3A00004703" target="_blank" >RIV/46747885:24210/17:00004703 - isvavai.cz</a>

Výsledek na webu

<a href="http://link.springer.com/article/10.1007/s11665-017-2787-3/fulltext.html" target="_blank" >http://link.springer.com/article/10.1007/s11665-017-2787-3/fulltext.html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11665-017-2787-3" target="_blank" >10.1007/s11665-017-2787-3</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Evaluation of the Effect of Different Plasma-Nitriding Parameters on the Properties of Low-Alloy Steel

Popis výsledku v původním jazyce

This work is concerned with the surface treatment (ion nitriding) of different plasma-nitriding parameters on the characteristics of DIN 1.8519 low-alloy steel. The samples were nitrided from 500 to 570 °C for 5–40 h using a constant 25% N2-75% H2 gaseous mixture. Lower temperature (500–520 °C) favors the formation of compound layers of γ′ and ε iron nitrides in the surface layers, whereas a monophase γ′-Fe4 N layer can be obtained at a higher temperature. The hardness of this layer can be obtained when nitriding is performed at a higher temperature, and the hardness decreases when the temperature increases to 570 °C. These results indicate that pulsed plasma nitriding is highly efficient at 550 °C and can form thick and hard nitrided layers with satisfactory mechanical properties. The results show the optimized nitriding process at 540 °C for 20 h. This process can be an interesting means of enhancing the surface hardness of tool steels to forge dies compared to stamped steels with zinc coating with a reduced coefficient of friction and improving the anti-sticking properties of the tool surface.

Název v anglickém jazyce

Evaluation of the Effect of Different Plasma-Nitriding Parameters on the Properties of Low-Alloy Steel

Popis výsledku anglicky

This work is concerned with the surface treatment (ion nitriding) of different plasma-nitriding parameters on the characteristics of DIN 1.8519 low-alloy steel. The samples were nitrided from 500 to 570 °C for 5–40 h using a constant 25% N2-75% H2 gaseous mixture. Lower temperature (500–520 °C) favors the formation of compound layers of γ′ and ε iron nitrides in the surface layers, whereas a monophase γ′-Fe4 N layer can be obtained at a higher temperature. The hardness of this layer can be obtained when nitriding is performed at a higher temperature, and the hardness decreases when the temperature increases to 570 °C. These results indicate that pulsed plasma nitriding is highly efficient at 550 °C and can form thick and hard nitrided layers with satisfactory mechanical properties. The results show the optimized nitriding process at 540 °C for 20 h. This process can be an interesting means of enhancing the surface hardness of tool steels to forge dies compared to stamped steels with zinc coating with a reduced coefficient of friction and improving the anti-sticking properties of the tool surface.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20500 - Materials engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Journal of Materials Engineering and Performance

ISSN

1059-9495

e-ISSN

—

Svazek periodika

Vol 26

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

3588-3596

Kód UT WoS článku

000411217500015

EID výsledku v databázi Scopus

2-s2.0-85021049553