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Characterisation of EN 1.4136 stainless steel heat-treated in solar furnace

  • Ioan MilosanEmail author
  • Daniel Cristea
  • Ionelia Voiculescu
  • Mihai Alin Pop
  • Marianne Balat-Pichelin
  • Andra Mihaela Predescu
  • Cristina Aurica Bogatu
  • Tibor Bedo
  • Andrei-Constantin Berbecaru
  • Victor Geantă
  • Camelia Gabor
  • Luminita Anisoara Isac
  • Flavius Aurelian Sarbu
  • Gheorghe Oancea
ORIGINAL ARTICLE
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Abstract

The paper presents a study concerning the characterisation of EN 1.4136 stainless steel heat-treated by means of concentrated solar energy in orde to improve some mechanical properties. In addition to the standard chemical composition, this steel was alloyed with nickel (Ni 1.5%wt) and copper (Cu 0.30%wt). Nickel was added to increase corrosion strength in acids, oxidising or non-oxidising environments, also facilitating an improved tenacity of the material. The addition of copper allows an increasing atmospheric corrosion strength (for copper content over 0.20%), at the same time intensifying the austenitising effect of nickel. The obtained steel was subjected to a solution heat treatment (hyper-hardening) with a heating time up to a austenitisation temperature (TA = 1050 °C) for 20 (lot A) and for 33 min (lot B), respectively. The maintaining duration for austenitisation was 7 (lot A) and 21 min (lot B), respectively, followed by cooling in water. After the heat treatment in the solar furnace, the specimens were analysed from the structural point of view as well as to their behaviour when subjected to tribological stress, in accordance with the operational requirements for these types of steels. The analysed characteristics were the dynamic friction coefficient (CoF), the wear rates and the hardness (HRC) tests. Based on the collected data, a specific characterisation was made for EN 1.4136 stainless steel heat-treated in a solar furnace. By applying the thermal treatments in the solar furnace, the hardness values have been increased (of about 55%) and the average wear rates have decreased compared to the base material.

Keywords

1.4136 stainless steel characterizations Concentrated solar energy Heat treatment Structure Wear Hardness 

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Notes

Acknowledgements

Financial support by the Access to Research Infrastructures activity in the 7th Framework Programme of the EU (SFERA 2 Grant Agreement n. 312643) is gratefully acknowledged, as well as the use of the facilities and its researchers/technology experts at the PROMES-CNRS laboratory.

We hereby acknowledge the structural founds project PRO-DD (POS-CCE, O.2.2.1., ID 123, SMIS 2637, contract no. 11/2009) for providing the infrastructure used in this work.

Funding information

This study received financial support from the Access to Research Infrastructures activity in the 7th Framework Programme of the EU (SFERA 2 grant agreement no. 312643)

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Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2018

Authors and Affiliations

  • Ioan Milosan
    • 1
    Email author
  • Daniel Cristea
    • 1
  • Ionelia Voiculescu
    • 2
  • Mihai Alin Pop
    • 1
  • Marianne Balat-Pichelin
    • 3
  • Andra Mihaela Predescu
    • 4
  • Cristina Aurica Bogatu
    • 5
  • Tibor Bedo
    • 1
  • Andrei-Constantin Berbecaru
    • 4
  • Victor Geantă
    • 4
  • Camelia Gabor
    • 1
  • Luminita Anisoara Isac
    • 5
  • Flavius Aurelian Sarbu
    • 6
  • Gheorghe Oancea
    • 7
  1. 1.Department of Materials Science, Faculty of Materials Science and EngineeringTransilvania University of BrasovBrasovRomania
  2. 2.Department of Materials Technology and Welding, Faculty of Engineering and Management of Technological SystemsPolitehnica University of BucharestBucharestRomania
  3. 3.PROMES-CNRS LaboratoryFont Romeu OdeilloFrance
  4. 4.Department of Engineering and Management of Metallic Materials Obtaining, Faculty of Materials Science and EngineeringPolitehnica University of BucharestBucharestRomania
  5. 5.Department of Product Design, Mechatronics and Environment, Faculty of Product Design and EnvironmentTransilvania University of BrasovBrasovRomania
  6. 6.Department of Engineering and Industrial Management, Faculty of Technological Engineering and Industrial ManagementTransilvania University of BrasovBrasovRomania
  7. 7.Department of Engineering Manufacturing, Faculty of Technological Engineering and Industrial ManagementTransilvania University of BrasovBrasovRomania

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