Mössbauer and structure studies on metallic powders from Fe-Al-X (X = Ni, Cu, Cr)

• Autorzy: Hanc, A. , Dercz, G. , Pająk, L. , Frąckowiak, J. , Kansy, J.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The Fe-Al-X and Fe-Al-Ni-X metallic powders produced by the self-decomposition process and then intensive grinding in an electro-magneto-mechanical mill with X = Fe, Ni, Cu, Cr additions was determined by applying the X-ray powder diffraction (XRD) and Mössbauer spectroscopy. Design/methodology/approach: The X-ray diffraction and Mössbauer spectroscopy were applied to identify the phase composition of the studied materials. Ordering process was analyzed by X-ray diffraction methods and Mössbauer spectroscopy. Findings: The effects of solute addition (X = Fe, Ni, Cu, Cr) in the investigated Fe-Al and Fe-Al-Ni metallic powders are presented and discussed. Good correlation between the results of X-ray diffraction and Mössbauer spectroscopy studies was obtained. Research limitations/implications: The Mössbauer spectroscopy appeared to be usefull in the identification of phase composition in studied materials. Application of Rietveld refinement method enabled the verification of this composition. Practical implications: The information on the phase transformation during the self-decomposition process and then intensive grinding in an electro-magneto-mechanical mill with additions are of prime importance for technological processing. Originality/value: All the phases that exist in the milled material contain high concentrations of aluminium (over 50 at. %) and have the ordered B2 structure. Alloying additions (Ni, Fe, Cu, Cr) and intensive high-energy grinding in the EMM mill modified the chemical and phase composition of the Fe-Al-X and Fe-Al-Ni-X samples.

Słowa kluczowe

PL

stopy metaliczne; aluminidek żelaza; spektroskopia Mössbauera; XRD

EN

metallic alloys; iron aluminides; Mössbauer spectroscopy; XRD

• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2008
• Tom: Vol. 31, nr 1
• Strony: 20-24
• Opis fizyczny: Bibliogr. 20 poz.

Twórcy

autor

Hanc, A.

autor

Dercz, G.

autor

Pająk, L.

autor

Frąckowiak, J.

autor

Kansy, J.

• Institute of Materials Science, Silesian University, ul. Bankowa 12, 40-007 Katowice, Poland,

Bibliografia

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