The influence of process parameters on structure and abrasive wear resistance of laser clad WC-NiCrBSi coatings

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F18%3A43952398" target="_blank" >RIV/49777513:23210/18:43952398 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/49777513:23640/18:43952398

Výsledek na webu

<a href="http://dx.doi.org/10.1088/2053-1591/aad859" target="_blank" >http://dx.doi.org/10.1088/2053-1591/aad859</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/2053-1591/aad859" target="_blank" >10.1088/2053-1591/aad859</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The influence of process parameters on structure and abrasive wear resistance of laser clad WC-NiCrBSi coatings

Popis výsledku v původním jazyce

In laser cladding, the final structure of coatings and thus their functional properties are dependent on process parameters used and the initial powder composition. This study focuses on laser cladding of WC-NiCrBSi coatings. As the powder used is a blend of 60% tungsten carbide spherical particles and 40% NiCrBSi matrix, the carbides’ morphology and distribution in the final coating would be dependent on laser cladding parameters. Coatings were cladded using a solid state laser and by varying key process parameters: process speed, powder feed rate and laser power. Cladded coatings are evaluated in terms of their microstructure, hardness and abrasive wear resistance tested by dry sand rubber wheel test ASTMG-65. It was found that the amount of dissolvedWCcarbides increases with increasing heat input and both Fe dilution and carbide dissolution affect the coatings´ properties. This shows that the selection of process parameters is crucial, as they significantly affect the final coatings´ wear resistance. In the overlay regions, the non-homogeneity of the coating’s microstructure was responsible for significant selective abrasive wear behavior.

Název v anglickém jazyce

The influence of process parameters on structure and abrasive wear resistance of laser clad WC-NiCrBSi coatings

Popis výsledku anglicky

In laser cladding, the final structure of coatings and thus their functional properties are dependent on process parameters used and the initial powder composition. This study focuses on laser cladding of WC-NiCrBSi coatings. As the powder used is a blend of 60% tungsten carbide spherical particles and 40% NiCrBSi matrix, the carbides’ morphology and distribution in the final coating would be dependent on laser cladding parameters. Coatings were cladded using a solid state laser and by varying key process parameters: process speed, powder feed rate and laser power. Cladded coatings are evaluated in terms of their microstructure, hardness and abrasive wear resistance tested by dry sand rubber wheel test ASTMG-65. It was found that the amount of dissolvedWCcarbides increases with increasing heat input and both Fe dilution and carbide dissolution affect the coatings´ properties. This shows that the selection of process parameters is crucial, as they significantly affect the final coatings´ wear resistance. In the overlay regions, the non-homogeneity of the coating’s microstructure was responsible for significant selective abrasive wear behavior.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20506 - Coating and films

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

MATERIALS RESEARCH EXPRESS

ISSN

2053-1591

e-ISSN

—

Svazek periodika

5

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

"NESTRÁNKOVÁNO"

Kód UT WoS článku

000441828900005

EID výsledku v databázi Scopus

2-s2.0-85052324726