Laser melting of groove defect repair on high thermal conductivity steel (HTCS-150)

This paper presents laser melting repair of groove defect on HTCS-150 surface using Nd:YAG laser system. Laser melting process was conducted using JK300HPS Nd:YAG twin lamp laser source with 1064 nm wavelength and pulsed mode. The parameters are pulse repetition frequency (PRF) that is set from 70 t...

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Main Authors:	B., Norhafzan, S. N., Aqida, F., Fazliana, Mohamed Reza Zalani, Mohamed Suffian, I., Ismail, C.M., Khairil
Format:	Article
Language:	English
Published:	Springer Berlin Heidelberg 2018
Subjects:	Q Science (General) TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/23978/ http://umpir.ump.edu.my/id/eprint/23978/ http://umpir.ump.edu.my/id/eprint/23978/ http://umpir.ump.edu.my/id/eprint/23978/7/Laser%20melting%20of%20groove%20defect%20repair%20on%20high%20thermal%20conductivity%20steel%20%28HTCS-150%29.pdf

id	ump-23978
recordtype	eprints
spelling	ump-239782019-03-06T07:38:02Z http://umpir.ump.edu.my/id/eprint/23978/ Laser melting of groove defect repair on high thermal conductivity steel (HTCS-150) B., Norhafzan S. N., Aqida F., Fazliana Mohamed Reza Zalani, Mohamed Suffian I., Ismail C.M., Khairil Q Science (General) TJ Mechanical engineering and machinery This paper presents laser melting repair of groove defect on HTCS-150 surface using Nd:YAG laser system. Laser melting process was conducted using JK300HPS Nd:YAG twin lamp laser source with 1064 nm wavelength and pulsed mode. The parameters are pulse repetition frequency (PRF) that is set from 70 to 100 Hz, average power (PA) of 50–70 W, and laser spot size of 0.7 mm. HTCS-150 samples were prepared with groove dimension of 0.3 mm width and depths of 0.5 mm using EDM wire cut. Groove defect repaired using laser melting process on groove surface area with various parameters’ process. The melted surface within the groove was characterized for subsurface hardness profile, roughness, phase identification, chemical composition, and metallographic study. The roughness analysis indicates high PRF at large spot size caused high surface roughness and low surface hardness. Grain refinement of repaired layer was analyzed within the groove as a result of rapid heating and cooling. The hardness properties of modified HTCS inside the groove and the bulk surface increased two times from as received HTCS due to grain refinement which is in agreement with Hall–Petch equation. These findings are significant to parameter design of die repair for optimum surface integrity and potential for repairing crack depth and width of less than 0.5 and 0.3 mm, respectively. Springer Berlin Heidelberg 2018-01-24 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/23978/7/Laser%20melting%20of%20groove%20defect%20repair%20on%20high%20thermal%20conductivity%20steel%20%28HTCS-150%29.pdf B., Norhafzan and S. N., Aqida and F., Fazliana and Mohamed Reza Zalani, Mohamed Suffian and I., Ismail and C.M., Khairil (2018) Laser melting of groove defect repair on high thermal conductivity steel (HTCS-150). Applied Physics A, 124 (2). p. 169. ISSN 0947-8396 (Print); 1432-0630 (Online) https://link.springer.com/article/10.1007/s00339-018-1604-7 https://doi.org/10.1007/s00339-018-1604-7
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	Q Science (General) TJ Mechanical engineering and machinery
spellingShingle	Q Science (General) TJ Mechanical engineering and machinery B., Norhafzan S. N., Aqida F., Fazliana Mohamed Reza Zalani, Mohamed Suffian I., Ismail C.M., Khairil Laser melting of groove defect repair on high thermal conductivity steel (HTCS-150)
description	This paper presents laser melting repair of groove defect on HTCS-150 surface using Nd:YAG laser system. Laser melting process was conducted using JK300HPS Nd:YAG twin lamp laser source with 1064 nm wavelength and pulsed mode. The parameters are pulse repetition frequency (PRF) that is set from 70 to 100 Hz, average power (PA) of 50–70 W, and laser spot size of 0.7 mm. HTCS-150 samples were prepared with groove dimension of 0.3 mm width and depths of 0.5 mm using EDM wire cut. Groove defect repaired using laser melting process on groove surface area with various parameters’ process. The melted surface within the groove was characterized for subsurface hardness profile, roughness, phase identification, chemical composition, and metallographic study. The roughness analysis indicates high PRF at large spot size caused high surface roughness and low surface hardness. Grain refinement of repaired layer was analyzed within the groove as a result of rapid heating and cooling. The hardness properties of modified HTCS inside the groove and the bulk surface increased two times from as received HTCS due to grain refinement which is in agreement with Hall–Petch equation. These findings are significant to parameter design of die repair for optimum surface integrity and potential for repairing crack depth and width of less than 0.5 and 0.3 mm, respectively.
format	Article
author	B., Norhafzan S. N., Aqida F., Fazliana Mohamed Reza Zalani, Mohamed Suffian I., Ismail C.M., Khairil
author_facet	B., Norhafzan S. N., Aqida F., Fazliana Mohamed Reza Zalani, Mohamed Suffian I., Ismail C.M., Khairil
author_sort	B., Norhafzan
title	Laser melting of groove defect repair on high thermal conductivity steel (HTCS-150)
title_short	Laser melting of groove defect repair on high thermal conductivity steel (HTCS-150)
title_full	Laser melting of groove defect repair on high thermal conductivity steel (HTCS-150)
title_fullStr	Laser melting of groove defect repair on high thermal conductivity steel (HTCS-150)
title_full_unstemmed	Laser melting of groove defect repair on high thermal conductivity steel (HTCS-150)
title_sort	laser melting of groove defect repair on high thermal conductivity steel (htcs-150)
publisher	Springer Berlin Heidelberg
publishDate	2018
url	http://umpir.ump.edu.my/id/eprint/23978/ http://umpir.ump.edu.my/id/eprint/23978/ http://umpir.ump.edu.my/id/eprint/23978/ http://umpir.ump.edu.my/id/eprint/23978/7/Laser%20melting%20of%20groove%20defect%20repair%20on%20high%20thermal%20conductivity%20steel%20%28HTCS-150%29.pdf
first_indexed	2023-09-18T22:36:07Z
last_indexed	2023-09-18T22:36:07Z
_version_	1777416606968709120

Laser melting of groove defect repair on high thermal conductivity steel (HTCS-150)

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