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| Naji, M. |
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| Azevedo, Nuno Monteiro |
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Arabi, Hossein
Processes and Engineering in Mechanics and Materials
in Cooperation with on an Cooperation-Score of 37%
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Publications (7/7 displayed)
- 2024Innovations in dedicated PET instrumentation: from the operating room to specimen imagingcitations
- 2022High-dimensional multinomial multiclass severity scoring of COVID-19 pneumonia using CT radiomics features and machine learning algorithmscitations
- 2020Multi-objective optimization of high power diode laser surface hardening process of AISI 410 by means of RSM and desirability approachcitations
- 2019Enhancement of surface hardness and metallurgical properties of AISI 410 by laser hardening process; diode and Nd:YAG laserscitations
- 2019An experimental investigation of the effects of diode laser surface hardening of AISI 410 stainless steel and comparison with furnace hardening heat treatmentcitations
- 2019A comparative study of laser surface hardening of AISI 410 and 420 martensitic stainless steels by using diode lasercitations
- 2018Influence of loading conditions on the overall mechanical behavior of polyether-ether-ketone (PEEK)citations
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article
A comparative study of laser surface hardening of AISI 410 and 420 martensitic stainless steels by using diode laser
Abstract
Laser surface hardening process is one of the new technologies for improving the surface of metals, especially steels, which in recent decades has received a lot of attention. This paper surveys the capability of laser surface hardening of AISI 410 and AISI 420 martensitic stainless steel by using continues wave diode laser with a maximum power of 1600 W, experimentally. Microstructure of the laser treated area by using optical microscope (OM), Field emission Scanning Electron Microscope (FESEM), and XRD were investigated and compared. Geometrical dimension, micro-hardness deviation (MHD) from the micro-hardness of the base metal, ferrite percentage, and the grain size of the hardened zone are the other considered responses. The results indicate that in the same input parameters the AISI 420 has higher surface hardness and less penetration depth and width than the AISI 410 stainless steel. Observations showed that a laser surface hardened layer of AISI 410 is about 620 HV with 1.8 mm depth and while for AISI 410 is about 720 HV with 1.2 mm depth is obtained. Comparing the results with the furnace hardening heat treatment show that the laser hardening process is more effective and precise than conventional processes.