Sintered materials prepared from stainless steel series 300 and 400 powders

Authors

  • Monnapas Morakotjinda Powder Metallurgy Research and Development Unit (PM_RDU) National Metal and Materials Technology Center
  • Nuttapon Kuljittipipat Materials Technology Division, School of Energy and Materials, King Mongkut University of Technology Thonburi
  • Nuchthana Poolthong Materials Technology Division, School of Energy and Materials, King Mongkut University of Technology Thonburi
  • Nattaya Tosangthum Powder Metallurgy Research and Development Unit (PM_RDU) National Metal and Materials Technology Center
  • Pongsak Wila Powder Metallurgy Research and Development Unit (PM_RDU) National Metal and Materials Technology Center
  • Rungthip Krataitong Powder Metallurgy Research and Development Unit (PM_RDU) National Metal and Materials Technology Center
  • Thanyaporn Yodkaew Powder Metallurgy Research and Development Unit (PM_RDU) National Metal and Materials Technology Center
  • Ornmanee Coovattanachai Powder Metallurgy Research and Development Unit (PM_RDU) National Metal and Materials Technology Center
  • Bhanu Vetayanugul Powder Metallurgy Research and Development Unit (PM_RDU) National Metal and Materials Technology Center
  • Ruangdaj Tongsri Powder Metallurgy Research and Development Unit (PM_RDU) National Metal and Materials Technology Center

Keywords:

Stainless steel powders, sintered materials

Abstract

Some sintered materials were prepared from mixtures of stainless steel series 300 and series 400 powders. The sintered stainless steels consisted of both austenitic and ferritic phases so they were designated as sintered duplex stainless steels (SDSSs). Microstructures and properties of the SDSSs were characterized and tested. Most SDSSs, except the 310L powder-base SDSSs, showed improved tensile strengths and hardness but exhibited inferior ductility, compared to those of the sintered stainless steels series 300. The 304L-410L SDSS showed promising mechanical properties. This SDSS were further investigated by varying weight ratio of 304L and 410L powders. It was found that sintered densities of the 304L-410L SDSSs were lower than those of the sintered 304L or 410L alloys. The 304L-410L SDSSs exhibited increased tensile strengths and hardness with scarified elongation, when the 410L powder content was increased. The SDSS prepared from 25 wt. % of 304L and 75 wt. % of 410L showed the higheststrengths and hardness.

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References

Reinshagen, J. H. and Neupaver, A. J. 1989. Fundamentals of P/M Stainless Steels. In : Advances in Powder Metallurgy. Princeton, N.J. : Metal Powder Industries : 283-295.

German, R. M.1998. Powder Metallurgy of Iron and Steel. New York : John Wiley & Sons.

Lamb, Stephen 1999. Practical Handbook of Stainless Steel & Nickel Alloys. Enmonton, Alberta : CASTI Publishing Inc : 181-183.

Kuljittipipat, N., Tosangthum, N., Coovattanachai, O., Krataitong, R., Mata, S., Daraphan, A., Vetayanugul, B., Poolthong, N. and Tongsri, R. 2005. Mechanical Properties of Austenitic + Ferritic Stainless Steels Prepared by Powder Metallurgy. NSTDA Annual Conference 2005. Pathum Thani, Thailand. March : 28-30.

Puscas, T. M., Molinari, A., Kazior, J., Pieczonka, T. and Nykeil, M. 2001. Sintering transformation in mixtures of austenitic and ferritic stainless steel powders. Powder Metall. 44(1) : 48-52.

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Published

2017-04-23

How to Cite

[1]
M. Morakotjinda, “Sintered materials prepared from stainless steel series 300 and 400 powders”, J Met Mater Miner, vol. 18, no. 1, Apr. 2017.

Issue

Vol. 18 No. 1 (2008)

Section

Original Research Articles

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Copyright (c) 2017 Journal of Metals, Materials and Minerals

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