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...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
American Institute of Physics
2011
|
| Subjects: | |
| Online Access: | 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 |
| _version_ | 1848816898882404352 |
|---|---|
| author | S. N., Aqida Naher, Sumsun Brabazon, Dermot |
| author_facet | S. N., Aqida Naher, Sumsun Brabazon, Dermot |
| author_sort | S. N., Aqida |
| building | UMP Institutional Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-15T01:13:12Z |
| format | Article |
| id | ump-1731 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T01:13:12Z |
| publishDate | 2011 |
| publisher | American Institute of Physics |
| recordtype | eprints |
| repository_type | Digital Repository |
| 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. (Published) http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=APCPCS001353000001001081000001&idtype=cvips&gifs=yes&ref=no |
| 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 |
| title | 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_short | 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 |
| topic | TJ Mechanical engineering and machinery |
| 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 |