Structure and Properties of Fe-Ni-Al-Si Alloys Produced by Powder Metallurgy

• Authors: P. Novák , L. Mejzlíková , V. Hošek , M. Martínek , I. Marek , A. Michalcová
• Languages of publication: EN

Abstracts

EN

Reactive sintering powder metallurgy is a simple alternative to conventional melting and powder metallurgy processes. During this process, pressed powder mixture of pure metals or other precursors is transformed into bulk intermediary phases by thermally activated in situ reaction. This process was previously tested on Fe-Al and Fe-Al-Si alloys. Positive effect of silicon on the reactive sintering behaviour was determined, leading to the development of novel carbon-free high-silicon FeAl20Si20 alloy (given in wt%). In this work, the effect of nickel on the pressureless reactive sintering of Fe-Al-Si pressed powder mixtures was studied. To explain the nickel influence, differential thermal analysis was utilized. Microstructure, phase composition and porosity of the FeAl20Si20Nix (x = 0, 5, 10, 20 wt%) alloys was described. Hardness, wear resistance, high-temperature oxidation resistance and thermal stability were evaluated as functions of nickel content. Results showed that porosity decreases with growing nickel content down to less than 3 vol.%. Oxidation rate of these alloys is more than 10 times lower than that of original FeAl20Si20 alloy. Thermal stability and abrasive wear resistance of these alloys is also superior to Fe-Al and Fe-Al-Si materials.

Keywords

EN

61.66.Dk; 62.20.Qp

Discipline

• 62.20.Qp: Friction, tribology, and hardness(see also 46.55.+d Tribology and mechanical contacts in continuum mechanics of solids; for materials treatment effects on friction related properties, see 81.40.Pq)
• 61.66.Dk: Alloys

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 122
• Issue: 3
• Pages: 524-527

Dates

published

2012-09

Contributors

author

P. Novák

• Department of Metals and Corrosion Engineering, Institute of Chemical Technology Technická 5, 166 28 Prague, Czech Republic

author

L. Mejzlíková

• Department of Metals and Corrosion Engineering, Institute of Chemical Technology Technická 5, 166 28 Prague, Czech Republic

author

V. Hošek

• Department of Metals and Corrosion Engineering, Institute of Chemical Technology Technická 5, 166 28 Prague, Czech Republic

author

M. Martínek

• Department of Metals and Corrosion Engineering, Institute of Chemical Technology Technická 5, 166 28 Prague, Czech Republic

author

I. Marek

• Department of Metals and Corrosion Engineering, Institute of Chemical Technology Technická 5, 166 28 Prague, Czech Republic

author

A. Michalcová

• Department of Metals and Corrosion Engineering, Institute of Chemical Technology Technická 5, 166 28 Prague, Czech Republic

References

• [1] P. Kratochvíl, Intermetallics 16, 587 (2008)
• [2] http://www.reade.com/Products/Aluminides/iron_aluminide.html
• [3] P. Haušild, J. Siegl, P. Málek, V. Šíma, Intermetallics 17, 680 (2009)
• [4] R.R. Judkins, U.S. Rao, Intermetallics 8, 1347 (2000)
• [5] P.A. Mcquay, V.K. Sikka, in: Encyclopedia of Materials: Science and Technology, Pergamon Press, London 2001, p. 1011
• [6] S. Jozwiak, K. Karczewski, Z. Bojar, Intermetallics 18, 1332 (2010)
• [7] U.S. Patent No. 5,269,830
• [8] P. Novák, V. Knotek, J. Šerák, A. Michalcová, D. Vojtěch, Powder Metall. 54, 167 (2011)
• [9] P. Novák, V. Knotek, M. Voděrová, J. Kubásek, J. Šerák, A. Michalcová, D. Vojtěch, J. Alloys Comp. 497, 90 (2010)
• [10] P. Novák, A. Michalcová, M. Voděrová, M. Šíma, J. Šerák, D. Vojtěch, K. Wienerová, J. Alloys Comp. 493, 81 (2010)
• [11] P. Novák, D. Vojtěch, J. Šerák, Surf. Coat. Technol. 200, 5229 (2006)
• [12] P. Novák, M. Zelinková, J. Šerák, A. Michalcová, M. Novák, D. Vojtěch, Intermetallics 19, 1306 (2011)

Identifiers

DOI

10.12693/APhysPolA.122.524