Comparing the surface hardness of mild steel processed with CO₂ and fibre lasers
The microhardness of low carbon mild steel was analysed after surface treatment by using carbon dioxide CO₂ and Fibre laser for comparison. Identical input parameters were used to compare the increase between the as-supplied material hardness and the treated surface. Microhardness testing was used t...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-06-01
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| Series: | Results in Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590048X23000389 |
| _version_ | 1797804625273815040 |
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| author | Alan Harnett Muhannad Ahmed Obeidi Inam Ul Ahad Ahmed R. Al-Hamaoy |
| author_facet | Alan Harnett Muhannad Ahmed Obeidi Inam Ul Ahad Ahmed R. Al-Hamaoy |
| author_sort | Alan Harnett |
| collection | DOAJ |
| description | The microhardness of low carbon mild steel was analysed after surface treatment by using carbon dioxide CO₂ and Fibre laser for comparison. Identical input parameters were used to compare the increase between the as-supplied material hardness and the treated surface. Microhardness testing was used to measure the surface hardness and a scanning electron microscope (SEM) was used to investigate the microstructural changes in the substrate. It was found that the laser scanning speed had a significant effect on the increased surface hardness, while the laser power was a less significant factor. The samples processed with the lower laser fluence of the Fibre laser exhibited a hardness increase of 38% with maximum depth of 200 μm, while those processed by the CO₂ laser exhibited a hardness increase of 41% with a maximum depth of 50 μm. A full design of experiment (DoE) model was modified for the optimization and prediction of the laser hardening process. The processing parameters applied were the laser beam power and the scanning speed. |
| first_indexed | 2024-03-13T05:39:59Z |
| format | Article |
| id | doaj.art-dfffe498c4e5464cb66ecbb977990b8a |
| institution | Directory Open Access Journal |
| issn | 2590-048X |
| language | English |
| last_indexed | 2024-03-13T05:39:59Z |
| publishDate | 2023-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Materials |
| spelling | doaj.art-dfffe498c4e5464cb66ecbb977990b8a2023-06-14T04:34:03ZengElsevierResults in Materials2590-048X2023-06-0118100400Comparing the surface hardness of mild steel processed with CO₂ and fibre lasersAlan Harnett0Muhannad Ahmed Obeidi1Inam Ul Ahad2Ahmed R. Al-Hamaoy3School of Mechanical & Manufacturing Engineering, Dublin City University, IrelandSchool of Mechanical & Manufacturing Engineering, Dublin City University, Ireland; I-Form Advanced Manufacturing Research Centre, Ireland; Corresponding author. School of Mechanical & Manufacturing Engineering, Dublin City University, Ireland.School of Mechanical & Manufacturing Engineering, Dublin City University, Ireland; I-Form Advanced Manufacturing Research Centre, IrelandDept. of Laser and Optoelectronics Eng., College of Engineering, Al-Nahrain University, Baghdad, IraqThe microhardness of low carbon mild steel was analysed after surface treatment by using carbon dioxide CO₂ and Fibre laser for comparison. Identical input parameters were used to compare the increase between the as-supplied material hardness and the treated surface. Microhardness testing was used to measure the surface hardness and a scanning electron microscope (SEM) was used to investigate the microstructural changes in the substrate. It was found that the laser scanning speed had a significant effect on the increased surface hardness, while the laser power was a less significant factor. The samples processed with the lower laser fluence of the Fibre laser exhibited a hardness increase of 38% with maximum depth of 200 μm, while those processed by the CO₂ laser exhibited a hardness increase of 41% with a maximum depth of 50 μm. A full design of experiment (DoE) model was modified for the optimization and prediction of the laser hardening process. The processing parameters applied were the laser beam power and the scanning speed.http://www.sciencedirect.com/science/article/pii/S2590048X23000389Laser hardeningSurface modificationMicrohardnessDesign of experimentCO2 and fibre laserScanning electron microscope SEM |
| spellingShingle | Alan Harnett Muhannad Ahmed Obeidi Inam Ul Ahad Ahmed R. Al-Hamaoy Comparing the surface hardness of mild steel processed with CO₂ and fibre lasers Results in Materials Laser hardening Surface modification Microhardness Design of experiment CO2 and fibre laser Scanning electron microscope SEM |
| title | Comparing the surface hardness of mild steel processed with CO₂ and fibre lasers |
| title_full | Comparing the surface hardness of mild steel processed with CO₂ and fibre lasers |
| title_fullStr | Comparing the surface hardness of mild steel processed with CO₂ and fibre lasers |
| title_full_unstemmed | Comparing the surface hardness of mild steel processed with CO₂ and fibre lasers |
| title_short | Comparing the surface hardness of mild steel processed with CO₂ and fibre lasers |
| title_sort | comparing the surface hardness of mild steel processed with co₂ and fibre lasers |
| topic | Laser hardening Surface modification Microhardness Design of experiment CO2 and fibre laser Scanning electron microscope SEM |
| url | http://www.sciencedirect.com/science/article/pii/S2590048X23000389 |
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