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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Main Authors: Biao Jin, Min Li, TaeWoo Hwang, YoungHoon Moon
Format: Article
Language:English
Published: Wiley 2015-01-01
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.
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institution Kabale University
issn 1687-8434
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publishDate 2015-01-01
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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