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Microatmosphere sintering of Fe-3.2Mn-1.5Si-0.5C steel in flowing technical nitrogen

Published/Copyright: May 12, 2015
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 106 Issue 5

Abstract

The dependence of properties of sintered Fe–Mn steels, produced with commercial ferromanganese and ferrosilicon, on processing parameters are examined. By controlling the local “microclimate”, using a semiclosed container/getter/activator combination, Fe-3.2Mn-1.4Si-0.5C steel was successfully sintered in flowing technical nitrogen or 95 vol.% N2/5 vol.% H2 furnace atmosphere. The getters were naphthalene and ferromanganese. The necessary reducing reactions involving manganese vapour and nascent carbon with water vapour and manganese and silicon oxides took place in the dry “microatmosphere” within and around the specimens. The resultant average values of ultimate tensile strength, 0.2% offset yield stress and elongation were 871 MPa, 561 MPa, and 2.21%, respectively, not significantly different from literature values for steels produced on the basis of Fe–Si–Mn ferroalloys sintered in dry hydrogen.

Keywords: PM Mn–Si steel; Sintering microatmosphere; Getter; Activator
* Correspondence address, Professor Andrzej Cias, PhD, DSc (Eng.), Faculty of Metals Engineering and Industrial Computer Science Department of Physical Metallurgy and Powder Metallurgy, AGH – University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków, Poland, Tel.: +48 12 617 25 87, Fax: +48 12 617 3190, E-mail:

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Received: 2014-10-06
Accepted: 2014-12-12
Published Online: 2015-05-12
Published in Print: 2015-05-13

© 2015, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111208
Keywords for this article
PM Mn–Si steel; Sintering microatmosphere; Getter; Activator

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Thermodynamic description of the Ti–O system
  5. Influence of MgO on the phase equilibria in the CuOx–FeOy–MgO–SiO2 system in equilibrium with copper alloy – Part I: methodology and liquidus in the tridymite primary phase field
  6. Experimental phase diagram of the V–Si–Ho ternary system
  7. Experimental study of the phase relationships in the Al-rich corner of the Al–Si–Fe–Cr quaternary system at 700 °C
  8. Effect of quench–ageing treatment on the microstructure and properties of Zn-15Al-3Cu alloy
  9. Grain growth and thermal stability in nanocrystalline Fe–B alloys prepared by melt spinning
  10. Microatmosphere sintering of Fe-3.2Mn-1.5Si-0.5C steel in flowing technical nitrogen
  11. Structural, thermal and optical studies of nanocomposite powder NiSb + Sb produced by mechanical alloying
  12. Effect of Mo/B atomic ratio on the properties of Mo2NiB2-based cermets
  13. Improving the stoichiometry of RF-sputtered amorphous alumina thin films by thermal annealing
  14. Assessment on the contact factors of a sandwich soft finger model – An experimental investigation
  15. Reducing debinding time in thick components fabricated by powder injection molding
  16. Short Communications
  17. Rapid synthesis of Ag nanoparticles and Ag@SiO2 core–shells
  18. Electrical conductivity of bismuth doped dysprosia stabilized zirconia as an electrolyte material for SOFC
  19. People
  20. Prof. Dr.-Ing. Lorenz Singheiser on the occasion of his 65th birthday
  21. DGM News
  22. DGM News
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