Investigation of mechanosynthesized Fe50Ni40Al10 powders
Identifieur interne : 000190 ( Main/Exploration ); précédent : 000189; suivant : 000191Investigation of mechanosynthesized Fe50Ni40Al10 powders
Auteurs : F. Hadef [Algérie] ; A. Otmani [Algérie] ; A. Djekoun [Algérie] ; J. M. Grenèche [France]Source :
- Journal of magnetism and magnetic materials [ 0304-8853 ] ; 2013.
Descripteurs français
- Pascal (Inist)
- Broyeur satellite, Broyeur boulet, Transformation phase, Alliage mécanique, Diffraction RX, Effet Mössbauer, Analyse phase, Distorsion réseau, Paramètre cristallin, Diagramme phase, Composé intermétallique, Ferromagnétisme, Nanocristal, Aluminium alliage, Fer alliage, Solution solide, Réseau cubique centré, Réseau cubique face centrée, Nickel alliage, Métal transition alliage.
English descriptors
- KwdEn :
- Aluminium alloys, BCC lattices, Ball mill, FCC lattices, Ferromagnetism, Intermetallic compounds, Iron alloys, Lattice distortion, Lattice parameters, Mechanical alloying, Moessbauer effect, Nanocrystal, Nickel alloys, Phase analysis, Phase diagrams, Phase transformations, Planetary mill, Solid solutions, Transition element alloys, XRD.
Abstract
The synthesis of Fe50Ni40Al10 powder mixture has been performed in a high-energy planetary ball mill. The phase transformations and structural changes occurring during mechanical alloying were investigated by X-ray diffraction (XRD) and Mössbauer spectroscopy. XRD analysis and Rietveld method revealed the formation of a single nanocrystalline fcc γ-Ni(Fe,Al) solid solution with a lattice parameter close to aγ-Ni(Fe,Al)=0.3612 nm, after 4 h of milling. The final powder is characterized by an average crystallite size of 14 nm accompanied by the introduction of a lattice strain of order of 1.37%. These values are markedly higher than those reported for mechanically alloyed Fe50Ni50 powders. It was found that the formation of the bcc phase, which coexisted with the fcc structure in the Fe-Ni phase diagram, was inhibited. However, mechanical alloying process gives rise to the Ni3Al intermetallic phase, at the early stages of milling. Mössbauer spectroscopy showed that all powders exhibited a ferromagnetic behavior and no paramagnetic phase was detected. The addition of low aluminium content caused more broadening of hyperfine field distributions and lower magnetic field due to the diffusion of Al atoms into y-FeNi lattice.
Affiliations:
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Hadef</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Recherche sur la Physico-Chimie des Surfaces et Interfaces, LRPCSI, Université 20 Août 1955, BP26, Route d'El-Hadaiek</s1><s2>Skikda 21000</s2><s3>DZA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Algérie</country><wicri:noRegion>Skikda 21000</wicri:noRegion></affiliation></author><author><name sortKey="Otmani, A" sort="Otmani, A" uniqKey="Otmani A" first="A." last="Otmani">A. Otmani</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Recherche sur la Physico-Chimie des Surfaces et Interfaces, LRPCSI, Université 20 Août 1955, BP26, Route d'El-Hadaiek</s1><s2>Skikda 21000</s2><s3>DZA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Algérie</country><wicri:noRegion>Skikda 21000</wicri:noRegion></affiliation></author><author><name sortKey="Djekoun, A" sort="Djekoun, A" uniqKey="Djekoun A" first="A." last="Djekoun">A. Djekoun</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Laboratoire de Magnétisme et Spectroscopie des Solides, LM2S, Université Badji Mokhtar, BP 12</s1><s2>Annaba 23000</s2><s3>DZA</s3><sZ>3 aut.</sZ></inist:fA14><country>Algérie</country><wicri:noRegion>Annaba 23000</wicri:noRegion></affiliation></author><author><name sortKey="Greneche, J M" sort="Greneche, J M" uniqKey="Greneche J" first="J. M." last="Grenèche">J. M. Grenèche</name><affiliation wicri:level="4"><inist:fA14 i1="03"><s1>LUNAM, Université du Maine, Institut des Molecules et Matériaux du Mans, UMR CNRS 6283</s1><s2>72085 Le Mans</s2><s3>FRA</s3><sZ>4 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Pays de la Loire</region><settlement type="city">Le Mans</settlement></placeName><orgName type="university">Université du Maine</orgName></affiliation></author></analytic><series><title level="j" type="main">Journal of magnetism and magnetic materials</title><title level="j" type="abbreviated">J. magn. magn. mater.</title><idno type="ISSN">0304-8853</idno><imprint><date when="2013">2013</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Journal of magnetism and magnetic materials</title><title level="j" type="abbreviated">J. magn. magn. mater.</title><idno type="ISSN">0304-8853</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aluminium alloys</term><term>BCC lattices</term><term>Ball mill</term><term>FCC lattices</term><term>Ferromagnetism</term><term>Intermetallic compounds</term><term>Iron alloys</term><term>Lattice distortion</term><term>Lattice parameters</term><term>Mechanical alloying</term><term>Moessbauer effect</term><term>Nanocrystal</term><term>Nickel alloys</term><term>Phase analysis</term><term>Phase diagrams</term><term>Phase transformations</term><term>Planetary mill</term><term>Solid solutions</term><term>Transition element alloys</term><term>XRD</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Broyeur satellite</term><term>Broyeur boulet</term><term>Transformation phase</term><term>Alliage mécanique</term><term>Diffraction RX</term><term>Effet Mössbauer</term><term>Analyse phase</term><term>Distorsion réseau</term><term>Paramètre cristallin</term><term>Diagramme phase</term><term>Composé intermétallique</term><term>Ferromagnétisme</term><term>Nanocristal</term><term>Aluminium alliage</term><term>Fer alliage</term><term>Solution solide</term><term>Réseau cubique centré</term><term>Réseau cubique face centrée</term><term>Nickel alliage</term><term>Métal transition alliage</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The synthesis of Fe<sub>50</sub>Ni<sub>40</sub>Al<sub>10</sub> powder mixture has been performed in a high-energy planetary ball mill. The phase transformations and structural changes occurring during mechanical alloying were investigated by X-ray diffraction (XRD) and Mössbauer spectroscopy. XRD analysis and Rietveld method revealed the formation of a single nanocrystalline fcc γ-Ni(Fe,Al) solid solution with a lattice parameter close to a<sub>γ-Ni(Fe,Al)</sub>=0.3612 nm, after 4 h of milling. The final powder is characterized by an average crystallite size of 14 nm accompanied by the introduction of a lattice strain of order of 1.37%. These values are markedly higher than those reported for mechanically alloyed Fe<sub>50</sub>Ni<sub>50</sub> powders. It was found that the formation of the bcc phase, which coexisted with the fcc structure in the Fe-Ni phase diagram, was inhibited. However, mechanical alloying process gives rise to the Ni<sub>3</sub>Al intermetallic phase, at the early stages of milling. Mössbauer spectroscopy showed that all powders exhibited a ferromagnetic behavior and no paramagnetic phase was detected. The addition of low aluminium content caused more broadening of hyperfine field distributions and lower magnetic field due to the diffusion of Al atoms into y-FeNi lattice.</div></front></TEI><affiliations><list><country><li>Algérie</li><li>France</li></country><region><li>Pays de la Loire</li></region><settlement><li>Le Mans</li></settlement><orgName><li>Université du Maine</li></orgName></list><tree><country name="Algérie"><noRegion><name sortKey="Hadef, F" sort="Hadef, F" uniqKey="Hadef F" first="F." last="Hadef">F. Hadef</name></noRegion><name sortKey="Djekoun, A" sort="Djekoun, A" uniqKey="Djekoun A" first="A." last="Djekoun">A. Djekoun</name><name sortKey="Otmani, A" sort="Otmani, A" uniqKey="Otmani A" first="A." last="Otmani">A. Otmani</name></country><country name="France"><region name="Pays de la Loire"><name sortKey="Greneche, J M" sort="Greneche, J M" uniqKey="Greneche J" first="J. M." last="Grenèche">J. M. Grenèche</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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