The influence of notch geometry and plasma nitriding parameters on the notch toughness of steel

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The influence of notch geometry and plasma nitriding parameters on the notch toughness of steel

Popis výsledku v původním jazyce

Plasma nitriding is one of the most important surface modification technologies, usually implemented as a final operation to improve the mechanical properties. In this paper, we focused in the field of influence notch geometry represented by V and U notch on notch toughness of the plasma nitrided steel. The experiments were performed on the DIN 1654/4 steel (CSN 41 2042.4), specimens were manufactured with V and U notch, according to CSN ISO 148-1. These specimens were plasma nitrided under selected nitriding conditions: plasma sputtering (cleaning) at 480 (°C), nitriding at 500 (°C), process duration t = 10 and 20 (h), p = 280 (Pa), U = 530 (V) and variable gas mixture ratio of 24N2: 8H2 (l/h) and 8N2: 24H2 (l/h). The work confirmed that nitrided steel become more brittle and with decreasing radius of the notch the notch toughness of nitrided steel was decreased, but for different gas composition, the notch toughness behaves quite distinctly. The toughness of steel was increased with

Název v anglickém jazyce

The influence of notch geometry and plasma nitriding parameters on the notch toughness of steel

Popis výsledku anglicky

Plasma nitriding is one of the most important surface modification technologies, usually implemented as a final operation to improve the mechanical properties. In this paper, we focused in the field of influence notch geometry represented by V and U notch on notch toughness of the plasma nitrided steel. The experiments were performed on the DIN 1654/4 steel (CSN 41 2042.4), specimens were manufactured with V and U notch, according to CSN ISO 148-1. These specimens were plasma nitrided under selected nitriding conditions: plasma sputtering (cleaning) at 480 (°C), nitriding at 500 (°C), process duration t = 10 and 20 (h), p = 280 (Pa), U = 530 (V) and variable gas mixture ratio of 24N2: 8H2 (l/h) and 8N2: 24H2 (l/h). The work confirmed that nitrided steel become more brittle and with decreasing radius of the notch the notch toughness of nitrided steel was decreased, but for different gas composition, the notch toughness behaves quite distinctly. The toughness of steel was increased with

Druh

D - Stať ve sborníku

CEP obor

KA - Vojenství

OECD FORD obor

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Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název statě ve sborníku

Vrstvy a povlaky 2014

ISBN

978-80-970824-3-7

ISSN

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e-ISSN

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Počet stran výsledku

7

Strana od-do

37-43

Název nakladatele

Liss a. s.

Místo vydání

Trenčín, Slovensko

Místo konání akce

Rožnov pod Radhoštěm

Datum konání akce

1. 1. 2014

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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