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Temperature Modeling of AISI 1045 Steel during Surface Hardening Processes

A Coupled thermo-mechanical finite element model was employed to simulate the possible effects of varying laser scanning parameters on the surface hardening process for AISI 1045 and AISI 4140 steels. We took advantage of the high-power density of laser beams to heat the surface of workpieces quickl...

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Autores principales: Hung, Tsung-Pin, Shi, Hao-En, Kuang, Jao-Hwa
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6213357/
https://www.ncbi.nlm.nih.gov/pubmed/30257417
http://dx.doi.org/10.3390/ma11101815
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author Hung, Tsung-Pin
Shi, Hao-En
Kuang, Jao-Hwa
author_facet Hung, Tsung-Pin
Shi, Hao-En
Kuang, Jao-Hwa
author_sort Hung, Tsung-Pin
collection PubMed
description A Coupled thermo-mechanical finite element model was employed to simulate the possible effects of varying laser scanning parameters on the surface hardening process for AISI 1045 and AISI 4140 steels. We took advantage of the high-power density of laser beams to heat the surface of workpieces quickly to achieve self-quenching effects. The finite element model, along with the temperature-dependent material properties, was applied to characterize the possible quenching and tempering effects during single-track laser surface heat treatment. We verified the accuracy of the proposed model through experiments. The effects of laser surface hardening parameters, such as power variation, scanning speed, and laser spot size, on the surface temperature distribution, hardening width, and hardening depth variations during the single-track surface laser treatment process, were investigated using the proposed model. The analysis results show that laser power and scanning speed are the key parameters that affect the hardening of the material. The numerical results reveal that the proposed finite element model is able to simulate the laser surface heat treatment process and tempering effect of steel.
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spelling pubmed-62133572018-11-14 Temperature Modeling of AISI 1045 Steel during Surface Hardening Processes Hung, Tsung-Pin Shi, Hao-En Kuang, Jao-Hwa Materials (Basel) Article A Coupled thermo-mechanical finite element model was employed to simulate the possible effects of varying laser scanning parameters on the surface hardening process for AISI 1045 and AISI 4140 steels. We took advantage of the high-power density of laser beams to heat the surface of workpieces quickly to achieve self-quenching effects. The finite element model, along with the temperature-dependent material properties, was applied to characterize the possible quenching and tempering effects during single-track laser surface heat treatment. We verified the accuracy of the proposed model through experiments. The effects of laser surface hardening parameters, such as power variation, scanning speed, and laser spot size, on the surface temperature distribution, hardening width, and hardening depth variations during the single-track surface laser treatment process, were investigated using the proposed model. The analysis results show that laser power and scanning speed are the key parameters that affect the hardening of the material. The numerical results reveal that the proposed finite element model is able to simulate the laser surface heat treatment process and tempering effect of steel. MDPI 2018-09-25 /pmc/articles/PMC6213357/ /pubmed/30257417 http://dx.doi.org/10.3390/ma11101815 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Hung, Tsung-Pin
Shi, Hao-En
Kuang, Jao-Hwa
Temperature Modeling of AISI 1045 Steel during Surface Hardening Processes
title Temperature Modeling of AISI 1045 Steel during Surface Hardening Processes
title_full Temperature Modeling of AISI 1045 Steel during Surface Hardening Processes
title_fullStr Temperature Modeling of AISI 1045 Steel during Surface Hardening Processes
title_full_unstemmed Temperature Modeling of AISI 1045 Steel during Surface Hardening Processes
title_short Temperature Modeling of AISI 1045 Steel during Surface Hardening Processes
title_sort temperature modeling of aisi 1045 steel during surface hardening processes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6213357/
https://www.ncbi.nlm.nih.gov/pubmed/30257417
http://dx.doi.org/10.3390/ma11101815
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