Effect of tungsten carbide partial dissolution on the microstructure evolution of a laser clad surface

Laser surface modification has been a way to promote wear resistance in dies and molds application. Previously, researchers have succeeded in enhancing surface properties through laser surface modification. The addition of particles in laser cladding process enhanced the surface properties by streng...

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Main Authors:	Fazliana, Fauzun, S. N., Aqida, Izwan, Ismail
Format:	Article
Language:	English
Published:	Elsevier Ltd 2020
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/26912/ http://umpir.ump.edu.my/id/eprint/26912/ http://umpir.ump.edu.my/id/eprint/26912/ http://umpir.ump.edu.my/id/eprint/26912/1/Effect%20of%20tungsten%20carbide%20partial%20dissolution%20on%20the%20microstructure1.pdf

id	ump-26912
recordtype	eprints
spelling	ump-269122020-01-20T03:15:48Z http://umpir.ump.edu.my/id/eprint/26912/ Effect of tungsten carbide partial dissolution on the microstructure evolution of a laser clad surface Fazliana, Fauzun S. N., Aqida Izwan, Ismail TJ Mechanical engineering and machinery Laser surface modification has been a way to promote wear resistance in dies and molds application. Previously, researchers have succeeded in enhancing surface properties through laser surface modification. The addition of particles in laser cladding process enhanced the surface properties by strengthening the modified AISI H13 tool steel structure. Controlled parameter was laser power, pulse repetition frequency (PRF) and scanning speed with a range of 1.7–2.5 kW, 30–70 Hz and 10.5–24.5 mm s−1 respectively. The powder addition executed by a preplaced method. The grain size and hardness properties of treated samples were characterized using scanning electron microscope (SEM) and hardness Vickers indenter respectively. Surface roughness was characterized using roughness tester. From the findings, tungsten carbide (WC) particles were dissolved homogenously within refined substrate grain structure at higher laser energy. Higher laser scanning speed contributed in uniform particles distribution. The grain refinement with W element in modified layer resulted in maximum hardness of 660 HV. Rapid solidification during laser processing produced metastable phase formation grain refinement, and a higher fraction of grain boundary which resulted in grain boundary strengthening, grain refinement and metastable phase formation. In this paper laser cladding of AISI H13 tool steel with micron size WC particles addition for enhanced surface properties was investigated. These findings are important to design high precision modification of die surface for high temperature forming process. Elsevier Ltd 2020 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/26912/1/Effect%20of%20tungsten%20carbide%20partial%20dissolution%20on%20the%20microstructure1.pdf Fazliana, Fauzun and S. N., Aqida and Izwan, Ismail (2020) Effect of tungsten carbide partial dissolution on the microstructure evolution of a laser clad surface. Optics & Laser Technology, 121 (105789). pp. 1-8. ISSN 0030-3992 https://doi.org/10.1016/j.optlastec.2019.105789 https://doi.org/10.1016/j.optlastec.2019.105789
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Fazliana, Fauzun S. N., Aqida Izwan, Ismail Effect of tungsten carbide partial dissolution on the microstructure evolution of a laser clad surface
description	Laser surface modification has been a way to promote wear resistance in dies and molds application. Previously, researchers have succeeded in enhancing surface properties through laser surface modification. The addition of particles in laser cladding process enhanced the surface properties by strengthening the modified AISI H13 tool steel structure. Controlled parameter was laser power, pulse repetition frequency (PRF) and scanning speed with a range of 1.7–2.5 kW, 30–70 Hz and 10.5–24.5 mm s−1 respectively. The powder addition executed by a preplaced method. The grain size and hardness properties of treated samples were characterized using scanning electron microscope (SEM) and hardness Vickers indenter respectively. Surface roughness was characterized using roughness tester. From the findings, tungsten carbide (WC) particles were dissolved homogenously within refined substrate grain structure at higher laser energy. Higher laser scanning speed contributed in uniform particles distribution. The grain refinement with W element in modified layer resulted in maximum hardness of 660 HV. Rapid solidification during laser processing produced metastable phase formation grain refinement, and a higher fraction of grain boundary which resulted in grain boundary strengthening, grain refinement and metastable phase formation. In this paper laser cladding of AISI H13 tool steel with micron size WC particles addition for enhanced surface properties was investigated. These findings are important to design high precision modification of die surface for high temperature forming process.
format	Article
author	Fazliana, Fauzun S. N., Aqida Izwan, Ismail
author_facet	Fazliana, Fauzun S. N., Aqida Izwan, Ismail
author_sort	Fazliana, Fauzun
title	Effect of tungsten carbide partial dissolution on the microstructure evolution of a laser clad surface
title_short	Effect of tungsten carbide partial dissolution on the microstructure evolution of a laser clad surface
title_full	Effect of tungsten carbide partial dissolution on the microstructure evolution of a laser clad surface
title_fullStr	Effect of tungsten carbide partial dissolution on the microstructure evolution of a laser clad surface
title_full_unstemmed	Effect of tungsten carbide partial dissolution on the microstructure evolution of a laser clad surface
title_sort	effect of tungsten carbide partial dissolution on the microstructure evolution of a laser clad surface
publisher	Elsevier Ltd
publishDate	2020
url	http://umpir.ump.edu.my/id/eprint/26912/ http://umpir.ump.edu.my/id/eprint/26912/ http://umpir.ump.edu.my/id/eprint/26912/ http://umpir.ump.edu.my/id/eprint/26912/1/Effect%20of%20tungsten%20carbide%20partial%20dissolution%20on%20the%20microstructure1.pdf
first_indexed	2023-09-18T22:42:12Z
last_indexed	2023-09-18T22:42:12Z
_version_	1777416989392764928

Effect of tungsten carbide partial dissolution on the microstructure evolution of a laser clad surface

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