Feasibility Studies on Underwater Laser Surface Hardening Process
Laser surface hardening process is a very promising hardening method for ferrous and nonferrous alloys where transformations occur during cooling after laser melting in the solid state. This study experimentally characterizes laser surface hardening of tool steel in both water and air. For the under...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2015/845273 |
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| author | Biao Jin Min Li TaeWoo Hwang YoungHoon Moon |
| author_facet | Biao Jin Min Li TaeWoo Hwang YoungHoon Moon |
| author_sort | Biao Jin |
| collection | DOAJ |
| description | Laser surface hardening process is a very promising hardening method for ferrous and nonferrous alloys where transformations occur during cooling after laser melting in the solid state. This study experimentally characterizes laser surface hardening of tool steel in both water and air. For the underwater operation, laser surface scanning is performed over the tool steel surface which is immersed in water. The laser surface hardening tests are performed with a maximum 200 W fiber laser with a Gaussian distribution of energy in the beam. For the surface hardening, single-track melting experiment which sequentially scans elongated path of single line has been performed. As the hardened depth depends on the thermal conductivity of the material, the surface temperature and the penetration depth may be varied by underwater laser processing. The feasibility of underwater laser surface hardening process is discussed on the basis of average hardness level and hardened bead shape. |
| format | Article |
| id | doaj-art-f03284ffdfa34a2bb7ea699a7ae9c2df |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-f03284ffdfa34a2bb7ea699a7ae9c2df2025-02-03T06:00:22ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422015-01-01201510.1155/2015/845273845273Feasibility Studies on Underwater Laser Surface Hardening ProcessBiao Jin0Min Li1TaeWoo Hwang2YoungHoon Moon3School of Mechanical Engineering, Engineering Research Center for Net Shape and Die Manufacturing, Pusan National University, Busan 609-735, Republic of KoreaSchool of Mechanical Engineering, Engineering Research Center for Net Shape and Die Manufacturing, Pusan National University, Busan 609-735, Republic of KoreaSchool of Mechanical Engineering, Engineering Research Center for Net Shape and Die Manufacturing, Pusan National University, Busan 609-735, Republic of KoreaSchool of Mechanical Engineering, Engineering Research Center for Net Shape and Die Manufacturing, Pusan National University, Busan 609-735, Republic of KoreaLaser surface hardening process is a very promising hardening method for ferrous and nonferrous alloys where transformations occur during cooling after laser melting in the solid state. This study experimentally characterizes laser surface hardening of tool steel in both water and air. For the underwater operation, laser surface scanning is performed over the tool steel surface which is immersed in water. The laser surface hardening tests are performed with a maximum 200 W fiber laser with a Gaussian distribution of energy in the beam. For the surface hardening, single-track melting experiment which sequentially scans elongated path of single line has been performed. As the hardened depth depends on the thermal conductivity of the material, the surface temperature and the penetration depth may be varied by underwater laser processing. The feasibility of underwater laser surface hardening process is discussed on the basis of average hardness level and hardened bead shape.http://dx.doi.org/10.1155/2015/845273 |
| spellingShingle | Biao Jin Min Li TaeWoo Hwang YoungHoon Moon Feasibility Studies on Underwater Laser Surface Hardening Process Advances in Materials Science and Engineering |
| title | Feasibility Studies on Underwater Laser Surface Hardening Process |
| title_full | Feasibility Studies on Underwater Laser Surface Hardening Process |
| title_fullStr | Feasibility Studies on Underwater Laser Surface Hardening Process |
| title_full_unstemmed | Feasibility Studies on Underwater Laser Surface Hardening Process |
| title_short | Feasibility Studies on Underwater Laser Surface Hardening Process |
| title_sort | feasibility studies on underwater laser surface hardening process |
| url | http://dx.doi.org/10.1155/2015/845273 |
| work_keys_str_mv | AT biaojin feasibilitystudiesonunderwaterlasersurfacehardeningprocess AT minli feasibilitystudiesonunderwaterlasersurfacehardeningprocess AT taewoohwang feasibilitystudiesonunderwaterlasersurfacehardeningprocess AT younghoonmoon feasibilitystudiesonunderwaterlasersurfacehardeningprocess |