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Elevated Temperature Plasma Nitriding of CrMoV Tool Steel for the Enhancement of Hardness and Wear Resistance

Article dans une revue avec comité de lecture
Auteur
KIRAN, P. Janardhana
1177257 Gandhi Institute of Technology and Management [GITAM]
SRINIVAS, V.
1177257 Gandhi Institute of Technology and Management [GITAM]
BASU, A.
335634 The University of the West Indies
NOUVEAU, Corinne
127742 Laboratoire Bourguignon des Matériaux et Procédés [LABOMAP]
RAO, K. Ram Mohan
127742 Laboratoire Bourguignon des Matériaux et Procédés [LABOMAP]
1059292 GITAM Institute of Science - Department of Chemistry

URI
http://hdl.handle.net/10985/24741
DOI
10.1007/s11665-023-07830-8
Date
2023-01-26
Journal
Journal of Materials Engineering and Performance

Résumé

Elevated temperature plasma nitriding of Cr-Mo-V based tool steel was performed by varying the treatment time to enhance hardness and wear resistance. Steel samples after metallographic polishing were placed on the conducting substrate holder in the nitriding reactor and evacuated to 0.5 Pa pressure. The sample holder was then negatively biased at 250 V to accelerate the ions toward the surface of the samples. A gas mixture of N2 and H2 was then passed into the vacuum chamber to generate the plasma. After plasma generation nitriding was performed at variable temperatures 500oC and 550oC for 6 and 10 hrs. Then X-ray diffraction (XRD) and Scanning Electron Microscope/Electron Dispersive Spectroscopic (SEM/EDS) studies were followed to understand the structural modifications. XRD analysis predicted the presence of iron nitrides whereas SEM/EDS had shown the presence of N availability from the surface to the core of the steels. Following the structural characterization hardness and wear resistance were measured by using Vicker’s microhardness tester and ball-on-plate method respectively. It was found that the hardness, case depth, and wear resistance of the steel were significantly enhanced mainly due to nitrogen solid solnution and nitride formation. Thus, it has been proved that a longer time or higher temperature of nitriding may be beneficial for such improvement.

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Fin d'embargo:
2023-07-26
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Documents liés

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  • Plasma Nitriding of 90CrMoV8 Tool Steel for the Enhancement of Hardness and Corrosion Resistance 
    Article dans une revue avec comité de lecture
    STEYER, Philippe; MOHAN RAO, Kumar Ram; LAGADRILLERE, Denis; NOUVEAU, Corinne (Elsevier, 2011)
    The aim of the study is to apply a plasma nitriding process to the 90CrMoV8 steel commonly employed in wood machining, and to determine its efficiency to improve both mechanical and electrochemical properties of the surface. ...
  • Effects of plasma nitriding on low alloy Cr-Mo-V steel 
    Article dans une revue avec comité de lecture
    TRINADH, Kalimi; RAO, K. Ram Mohan; NOUVEAU, Corinne (Elsevier, 2021)
    In this study the effects on resistance to corrosion of a low alloy steel after plasma nitriding has been reported. Nitriding was performed at a low temperature of 450 °C and also at 520 °C for the same duration of 10 h ...
  • Elevated temperature plasma nitriding and effects on electrochemical properties of steel 
    Article dans une revue avec comité de lecture
    RAO, K. Ram Mohan; TRINADH, Kalimi; NOUVEAU, Corinne (Elsevier, 2019)
    Surface modification of tool steel had been performed by utilizing plasma nitriding at elevated temperature by varying the exposure time. The nitrided steel had shown significantly enhanced corrosion resistance properties. ...
  • Effects of low and high temperature plasma nitriding on electrochemical corrosion of steel 
    Article dans une revue avec comité de lecture
    RAM MOHAN RAO, K.; LAKSHMAN, S.; MURALIDHAR, P.; TRINADH, K.; NOUVEAU, Corinne (Elsevier BV, 2020)
    This study concerns plasma nitriding of tool steel at different temperatures and its effects on corrosion resistance. Inside the nitriding reactor steel samples were placed on the sample holder after metallographic polishing ...
  • Electrochemical study on the corrosion resistance of surface modified Cr-Mo-V steel by elevated temperature plasma nitriding 
    Article dans une revue avec comité de lecture
    TRINADH, Kalimi; KHANNA, Anand Sawroop; RAO, K Ram Mohan; ANEJA, Karanveer S.; NOUVEAU, Corinne (IOP Publishing Ltd, 2019)
    This study presents the effect of plasma nitriding on corrosion resistance of low alloy 90CrMoV8 steel. At a selected temperature of 500 °C, nitriding was performed by varying the exposure time. X-ray diffraction of nitrided ...

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