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Microstructure and tribological properties of electrolytic plasma nitrided high-speed steel

  • Mazhyn Skakov , Bauyrzhan Rakhadilov , Michael Scheffler and Erlan Batyrbekov
Published/Copyright: March 27, 2015
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Materials Testing
From the journal Materials Testing Volume 57 Issue 4

Abstract

In this work, the influence of electrolytic plasma nitriding on the structure and tribological properties of R6M5 high-speed steel were investigated. We found out that after electrolytic plasma nitriding of R6M5 steel a surface modified layer is formed with a thickness of 20 to 40 μm and with increased microhardness of 9000–12 200 MPa. It is established, that after nitriding surface friction coefficient of the sample steel decreased from 0.90 to 0.65, and sample wear rate reduced up to 5 times compared to the original, which indicates considerable wear resistance increase and hardness of R6M5 steel surface layer. It was also determined that abrasive wear resistance of R6M5 steel surface layer increased to 25 % as a result of electrolytic plasma nitriding. Thus, studies have demonstrated the feasibility and applicability of electrolytic plasma nitriding in order to improve the service time of cutting tools working under friction and wear conditions.

Kurzfassung

In der diesem Beitrag zugrunde liegenden Arbeit wurde der Einfluss des Elektrolyt-Plasmanitrierens auf die Struktur und die tribologischen Eigenschaften eines R6M5-Hochgeschwindigkeitsstahles erforscht. Nach dem Elektrolyt-Plasmanitrieren wurde eine modifizierte Schicht auf der R6M5-Stahloberfläche beobachtet, die eine Dicke von 20 bis 40 µm hatte sowie eine höhere Mikrohärte von 9000 bis 12 200 MPa aufwies. Es stellte sich heraus, dass nach dem Nitrieren der Oberflächenreibkoeffizient der Stahlprobe von 0,90 auf 0,65 abnimmt und die Verschleißrate der Probe bis zum Fünffachen gegenüber dem Originalwerkstoff reduziert ist, was auf eine beachtliche Zunahme des Verschleißwiderstandes und der Härte der R6M5-Oberflächenschicht hindeutet. Außerdem wurde festgestellt, dass die abrasive Verschleißrate auf der R6M5-Oberfläche um 25 % infolge des Elektrolyt-Plasmanitrierens zunimmt. Diese Studie hat also die Machbarkeit und die Anwendbarkeit des elektrolytischen Plasmanitrierens gezeigt, um die Einsatzdauer von Schneidwerkzeugen zu verbessern, die unter Reibungs- und Verschleißbedingungen eingesetzt werden.

§Correspondence Address, Prof. Dr. Mazhyn Skakov, National Nuclear Center of the Republic of Kazakhstan, Kurchatov, Kazakhstan, E-mail:

Prof. Dr. Mazhyn Skakov, born in Kazakhstan in 1952, is Doctor of Physical and Mathematical Sciences and is Professor and Head of the Department of Technical Physics at East Kazakhstan State Technical University named D. Serikbayev (Kazakhstan). His research interests cover the physics of the condensed state. He has published more than 100 papers in refereed journals.

MSc Bauyrzhan Rakhadilov, born in Kazakhstan in 1988, has a Master of Physics and is a doctoral student at the East Kazakhstan State Technical University named D. Serikbayev (Kazakhstan). He is a specialist in the modification of metals and alloys by concentrated energy streams and has published four papers in refereed journals.

Prof. Dr. Michael Scheffler, born in Germany in 1964, is working in the Institute of Materials and Joining Technology at the Otto-von-Guericke University in Magdeburg, Germany. His research interests are in the physics and chemistry of ceramic materials. He has published more 100 papers in refereed journals.

Dr. Erlan Batyrbekov, born in Kazakhstan in 1961, has a Doctor of Physical and Mathematical Sciences. He is General Director of National Nuclear Center of the Republic of Kazakhstan (RSE) of the Kazakhstan Agency for Atomic Energy. His research interests cover the physics of condensed state and the physics of low temperature plasma. He has published more than 100 papers in refereed journals.

References

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Published Online: 2015-03-27
Published in Print: 2015-04-01

© 2015, Carl Hanser Verlag, München

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  7. Analysis of industrial conditions during multi-stage cooling of C70D high-carbon steel wire rod
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  13. Acoustic emission testing of surface roughness and wear caused by grinding of ceramic materials
  14. Electrochemical impedance spectroscopy of hardened compacted cemented soils at early curing stage
  15. Microstructure and pore fractal dimensions of recycled thermal insulation concrete
  16. Microstructure and tribological properties of electrolytic plasma nitrided high-speed steel
  17. Exploitation of limestone in brick making
  18. Effect of alkaline treatment on physico-mechanical properties of black rice husk ash filled polypropylene biocomposites
  19. Kalender/Calendar
  20. Kalender
https://doi.org/10.3139/120.110709

Articles in the same Issue

  1. Inhalt/Contents
  2. Inhalt
  3. Fachbeiträge/Technical Contributions
  4. Influence of the production process on the deformation and fatigue performance of friction drilled internal threads in the aluminum alloy 6060*
  5. Effect of quench and strain aging on the mechanical properties of low carbon microalloyed steels
  6. Effect of temperature on microstructure and mechanical behavior of diffusion bonded Armor 500 and AISI 1040 steels
  7. Analysis of industrial conditions during multi-stage cooling of C70D high-carbon steel wire rod
  8. Effect of cryogenic treatment on the microstructure and wear behavior of a T-42 tool steel
  9. Application of the response surface methodology in the ball burnishing process for the prediction and analysis of surface hardness of the aluminum alloy AA 7075
  10. The memory effect in polyolefinic products: A tool for confirming the steam sterilization process
  11. Neutron tomography in archaeology*
  12. Ultraschallprüfung von Betonbauteilen – laufzeitgesteuerte Gruppenstrahler mit Punktkontaktprüfköpfen
  13. Acoustic emission testing of surface roughness and wear caused by grinding of ceramic materials
  14. Electrochemical impedance spectroscopy of hardened compacted cemented soils at early curing stage
  15. Microstructure and pore fractal dimensions of recycled thermal insulation concrete
  16. Microstructure and tribological properties of electrolytic plasma nitrided high-speed steel
  17. Exploitation of limestone in brick making
  18. Effect of alkaline treatment on physico-mechanical properties of black rice husk ash filled polypropylene biocomposites
  19. Kalender/Calendar
  20. Kalender
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