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Licensed Unlicensed Requires Authentication Published by De Gruyter September 26, 2018

Wear resistance of laser cladded Stellite 31 coating on AISI 316L steel

Verschleißwiderstand von laserplattierten Schichten aus Stellite 31 auf einem Stahl AISI 316L
Pisit Kittivitayakul, Jirapon Khamwannah, Patiphan Juijerm, Anchaleeporn Waritswat Lothongkum and Gobboon Lothongkum
From the journal Materials Testing

Abstract

Laser cladding of Stellite 31 powder on AISI 316L plate size of 50 × 50 × 25 mm using diode laser powers of 3.5, 4.0, 4.5 and 5.0 kW was produced. The wear tests of clad layers were investigated according to ASTM G99. Equiaxed and elongated grains were found in clad layer using laser powers of 3.5, 4.0 kW and 4.0, 5.0 kW, respectively. Compressive residual stress was detected at the surface of the clad layers. They decreased as laser power increased. After polishing, compressive residual stress and the wear resistance of the clad layers subjected to higher laser power were higher than those subjected to lower laser power. The friction coefficient of the clad layer subjected to higher laser power was lower than that subjected to lower laser power.

Kurzfassung

Mit einem Diodenlaser wurden bei Leistungen von 3,5, 4,0, 4,5 and 5,0 kW Schichten aus einem Stellite 31 Pulver auf eine Stahlplatte des Typs AISI 316L mit einer Größe von 50 × 50 × 25 mm aufgebracht. Es wurden Verschleißversuche entsprechend des ASTM-Standards G99 durchgeführt. In der Schicht wurden gleichmäßige und gelängte Körner bei den entsprechenden Laserleistungen von 3,5, 4,0, 4,5 and 5,0 kW gefunden. Es wurden außerdem die Druckeigenspannungen auf der Oberfläche der Schichten gemessen und sie nahmen mit zunehmender Laserleistung ab. Nach dem Polieren waren die Druckeigenspannungen und der Verschleißwiderstand der Schichten bei höheren Laserleistungen höher und bei niedrigeren Laserleistungen entsprechend geringer. Der Reibkoeffizient der Schichten, die mit höherer Laserleistung hergestellt wurden, war niedriger als bei niedrigeren Laserleistungen.


*Correspondence Address, Prof. Dr.-Ing. Gobboon Lothongkum, Department of Metallurgical Engineering, Faculty of Engineering, Chulalongkorn University, Patumwan, Bangkok 10330, Thailand, E-mail:

Pisit Kittivitayakul, born in 1991, is a graduate student in the Department of Metallurgical Engineering, Chulalongkorn University, Bangkok, Thailand. His research scope is related to the development and characterization of welding of superalloy. He received his Bachelor's degree in Metallurgical Engineering at Chulalongkorn University, Thailand in 2014. Currently, he is in service as an engineer at Five Tiger Engineering, Songkhla, Thailand.

Dr. Jirapon Khamwannah, born in 1983, is a lecturer in the Department of Metallurgical Engineering, Faculty of Engineering, Chulalonkorn University, Bangkok, Thailand. She received her PhD degree in 2015 at the University of California San Diego, USA. Her areas of expertise include developing nano-surface for biomaterials and energy related applications.

Dr.-Ing. Patipan Juijerm, born in 1973, is an Assistance Professor at the Department of Material Engineering, Faculty of Engineering, Kasertsart University, Bangkok, Thailand. He received his Dr.-Ing. degree at the University of Kassel, Germany. Mechanical and thermochemical surface treatments and residual stresses related to the fatigue performance of metallic materials are his area of expertise.

Associate Prof. Dr. Anchaleeporn Waritswat Lothongkum received her PhD in Hydrocarbon Chemistry in Catalyst Design Engineering at Kyoto University, Japan, in 1994, thanks to a Scholarship from the Hitachi Scholarship Foundation. She is an Associate Professor at King Mongkut's Institute of Technology Ladkrabang in Bangkok, Thailand. She served as President of the Thai Institute of Chemical Engineering and Applied Chemistry from 2013 to 2017. Her fields of interest are catalysis, clean technologies, alternative energy, sol gel technology, membrane technology, separation processes, environmental related, corrosion, wastewater treatment, adsorption engineering, electroplating, powder technology, and process safety management.

Prof. Dr.-Ing. Gobboon Lothongkum, born in 1960, is a member of the Innovative Metals Research Unit, Department of Metallurgical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkak, Thailand. He has been serving as Head of the department since 2015. He received his Dr.-Ing. degree from the University of the Federal Armed Force Hamburg, Germany and the International Welding Engineer Certificate of the International Institute of Welding in 1994 and 2006, respectively. His areas of interest are corrosion of metals and alloys, welding and metal joining, stainless steel, high temperature materials and process safety management.


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Published Online: 2018-09-26
Published in Print: 2018-10-27

© 2018, Carl Hanser Verlag, München