Optimisation of Pulsed Nd: YAG Laser Processing of Gray Cast Iron for Enhanced Surface Properties
This paper presents laser surface modification of gray cast iron for enhanced surface hardness properties. A 300 W high power Nd:YAG laser system with pulse mode was used to modify gray cast iron samples surface. Laser processing was conducted using a 33 full factorial design. Three controlled param...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Trans Tech Publications, Switzerland
2014
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| Subjects: | |
| Online Access: | http://umpir.ump.edu.my/id/eprint/8265/1/Optimisation%20of%20Pulsed%20Nd.pdf |
| _version_ | 1825822074745126912 |
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| author | Fazliana, Fauzun S. N., Aqida Md Saidin, Wahab |
| author_facet | Fazliana, Fauzun S. N., Aqida Md Saidin, Wahab |
| author_sort | Fazliana, Fauzun |
| collection | UMP |
| description | This paper presents laser surface modification of gray cast iron for enhanced surface hardness properties. A 300 W high power Nd:YAG laser system with pulse mode was used to modify gray cast iron samples surface. Laser processing was conducted using a 33 full factorial design. Three controlled parameters were laser power, pulse duration and overlap percentage. The modified surface was characterised for metallographic study, roughness and hardness. Metallographic study and surface morphology were conducted using optical microscope while hardness properties were measured using Vickers scale. Surface roughness was measured using a 2D stylus profilometer. The results show that hardness of laser modified surface increased due to grain refinement. The overlapping rates increased significantly with decreasing laser scanning speed which affected sample surface integrity. Low surface roughness obtained at the highest scanning speed of 1400 mm/min, and low power of 830 W with pulse repetition frequency of 50 Hz. Process optimization was carried out for maximum surface hardness and laser modified depth, and minimum surface roughness. These findings indicate potential application of cast iron for high wear resistant applications through laser surface modification. |
| first_indexed | 2024-03-06T11:51:09Z |
| format | Article |
| id | UMPir8265 |
| institution | Universiti Malaysia Pahang |
| language | English |
| last_indexed | 2024-03-06T11:51:09Z |
| publishDate | 2014 |
| publisher | Trans Tech Publications, Switzerland |
| record_format | dspace |
| spelling | UMPir82652018-01-22T06:09:17Z http://umpir.ump.edu.my/id/eprint/8265/ Optimisation of Pulsed Nd: YAG Laser Processing of Gray Cast Iron for Enhanced Surface Properties Fazliana, Fauzun S. N., Aqida Md Saidin, Wahab TJ Mechanical engineering and machinery This paper presents laser surface modification of gray cast iron for enhanced surface hardness properties. A 300 W high power Nd:YAG laser system with pulse mode was used to modify gray cast iron samples surface. Laser processing was conducted using a 33 full factorial design. Three controlled parameters were laser power, pulse duration and overlap percentage. The modified surface was characterised for metallographic study, roughness and hardness. Metallographic study and surface morphology were conducted using optical microscope while hardness properties were measured using Vickers scale. Surface roughness was measured using a 2D stylus profilometer. The results show that hardness of laser modified surface increased due to grain refinement. The overlapping rates increased significantly with decreasing laser scanning speed which affected sample surface integrity. Low surface roughness obtained at the highest scanning speed of 1400 mm/min, and low power of 830 W with pulse repetition frequency of 50 Hz. Process optimization was carried out for maximum surface hardness and laser modified depth, and minimum surface roughness. These findings indicate potential application of cast iron for high wear resistant applications through laser surface modification. Trans Tech Publications, Switzerland 2014 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/8265/1/Optimisation%20of%20Pulsed%20Nd.pdf Fazliana, Fauzun and S. N., Aqida and Md Saidin, Wahab (2014) Optimisation of Pulsed Nd: YAG Laser Processing of Gray Cast Iron for Enhanced Surface Properties. Advanced Materials Research, 1024. pp. 215-218. ISSN 1022-6680 (print), 1662-8985 (online). (Published) http://dx.doi.org/10.4028/www.scientific.net/AMR.1024.215 doi: 10.4028/www.scientific.net/AMR.1024.215 |
| spellingShingle | TJ Mechanical engineering and machinery Fazliana, Fauzun S. N., Aqida Md Saidin, Wahab Optimisation of Pulsed Nd: YAG Laser Processing of Gray Cast Iron for Enhanced Surface Properties |
| title | Optimisation of Pulsed Nd: YAG Laser Processing of Gray Cast Iron for Enhanced Surface Properties |
| title_full | Optimisation of Pulsed Nd: YAG Laser Processing of Gray Cast Iron for Enhanced Surface Properties |
| title_fullStr | Optimisation of Pulsed Nd: YAG Laser Processing of Gray Cast Iron for Enhanced Surface Properties |
| title_full_unstemmed | Optimisation of Pulsed Nd: YAG Laser Processing of Gray Cast Iron for Enhanced Surface Properties |
| title_short | Optimisation of Pulsed Nd: YAG Laser Processing of Gray Cast Iron for Enhanced Surface Properties |
| title_sort | optimisation of pulsed nd yag laser processing of gray cast iron for enhanced surface properties |
| topic | TJ Mechanical engineering and machinery |
| url | http://umpir.ump.edu.my/id/eprint/8265/1/Optimisation%20of%20Pulsed%20Nd.pdf |
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