Laser Surface Modification of H13 Die Steel using Different Laser Spot Sizes

This paper presents a laser surface modification process of AISI H13 tool steel using three sizes of laser spot with an aim to achieve reduced grain size and surface roughness. A Rofin DC'015 diffusion'cooled CO2 slab laser was used to process AISI H13 tool steel samples. Sampl...

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Main Authors:	S. N., Aqida, Naher, Sumsun, Brabazon, Dermot
Format:	Article
Language:	English
Published:	American Institute of Physics 2011
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/1731/ http://umpir.ump.edu.my/id/eprint/1731/ http://umpir.ump.edu.my/id/eprint/1731/1/Laser_Surface_Modification_of_H13_Die_Steel_using_Different_Laser_Spot_Sizes.pdf

id	ump-1731
recordtype	eprints
spelling	ump-17312018-01-22T07:56:33Z http://umpir.ump.edu.my/id/eprint/1731/ Laser Surface Modification of H13 Die Steel using Different Laser Spot Sizes S. N., Aqida Naher, Sumsun Brabazon, Dermot TJ Mechanical engineering and machinery This paper presents a laser surface modification process of AISI H13 tool steel using three sizes of laser spot with an aim to achieve reduced grain size and surface roughness. A Rofin DC'015 diffusion'cooled CO2 slab laser was used to process AISI H13 tool steel samples. Samples of 10 mm diameter were sectioned to 100 mm length in order to process a predefined circumferential area. The parameters selected for examination were laser peak power, overlap percentage and pulse repetition frequency (PRF). Metallographic study and image analysis were done to measure the grain size and the modified surface roughness was measured using two'dimensional surface profilometer. From metallographic study, the smallest grain sizes measured by laser modified surface were between 0.51 3m and 2.54 3m. The minimum surface roughness, Ra, recorded was 3.0 3m. This surface roughness of the modified die steel is similar to the surface quality of cast products. The grain size correlation with hardness followed the findings correlate with Hall'Petch relationship. The potential found for increase in surface hardness represents an important method to sustain tooling life. American Institute of Physics 2011-05-04 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/1731/1/Laser_Surface_Modification_of_H13_Die_Steel_using_Different_Laser_Spot_Sizes.pdf S. N., Aqida and Naher, Sumsun and Brabazon, Dermot (2011) Laser Surface Modification of H13 Die Steel using Different Laser Spot Sizes. 14th International ESAFORM Conference on Material Forming: AIP Conference Proceedings, 1353. pp. 1081-1086. http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=APCPCS001353000001001081000001&idtype=cvips&gifs=yes&ref=no
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 S. N., Aqida Naher, Sumsun Brabazon, Dermot Laser Surface Modification of H13 Die Steel using Different Laser Spot Sizes
description	This paper presents a laser surface modification process of AISI H13 tool steel using three sizes of laser spot with an aim to achieve reduced grain size and surface roughness. A Rofin DC'015 diffusion'cooled CO2 slab laser was used to process AISI H13 tool steel samples. Samples of 10 mm diameter were sectioned to 100 mm length in order to process a predefined circumferential area. The parameters selected for examination were laser peak power, overlap percentage and pulse repetition frequency (PRF). Metallographic study and image analysis were done to measure the grain size and the modified surface roughness was measured using two'dimensional surface profilometer. From metallographic study, the smallest grain sizes measured by laser modified surface were between 0.51 3m and 2.54 3m. The minimum surface roughness, Ra, recorded was 3.0 3m. This surface roughness of the modified die steel is similar to the surface quality of cast products. The grain size correlation with hardness followed the findings correlate with Hall'Petch relationship. The potential found for increase in surface hardness represents an important method to sustain tooling life.
format	Article
author	S. N., Aqida Naher, Sumsun Brabazon, Dermot
author_facet	S. N., Aqida Naher, Sumsun Brabazon, Dermot
author_sort	S. N., Aqida
title	Laser Surface Modification of H13 Die Steel using Different Laser Spot Sizes
title_short	Laser Surface Modification of H13 Die Steel using Different Laser Spot Sizes
title_full	Laser Surface Modification of H13 Die Steel using Different Laser Spot Sizes
title_fullStr	Laser Surface Modification of H13 Die Steel using Different Laser Spot Sizes
title_full_unstemmed	Laser Surface Modification of H13 Die Steel using Different Laser Spot Sizes
title_sort	laser surface modification of h13 die steel using different laser spot sizes
publisher	American Institute of Physics
publishDate	2011
url	http://umpir.ump.edu.my/id/eprint/1731/ http://umpir.ump.edu.my/id/eprint/1731/ http://umpir.ump.edu.my/id/eprint/1731/1/Laser_Surface_Modification_of_H13_Die_Steel_using_Different_Laser_Spot_Sizes.pdf
first_indexed	2023-09-18T21:54:56Z
last_indexed	2023-09-18T21:54:56Z
_version_	1777414015348113408

Laser Surface Modification of H13 Die Steel using Different Laser Spot Sizes

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