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The effect of oxygen on ball milling of a near-equiatomic FeV sigma phase
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10.1063/1.3005876
/content/aip/journal/jap/104/8/10.1063/1.3005876
http://aip.metastore.ingenta.com/content/aip/journal/jap/104/8/10.1063/1.3005876
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Figures

Image of FIG. 1.
FIG. 1.

XRD patterns of a powder milled for the indicated times. Their main features are determined by: (i) the sigma phase for (ii) a bcc alpha phase for [(110), (200), (211) peaks are labeled], and (iii) a complex mixture of a bcc alpha phase and of oxides for (oxide peaks are clearly observed for and ).

Image of FIG. 2.
FIG. 2.

Lattice parameter of the bcc phase as a function of milling time.

Image of FIG. 3.
FIG. 3.

RT Mössbauer spectra of a powder milled for the indicated times.

Image of FIG. 4.
FIG. 4.

Some characteristics of the RT Mössbauer spectra as a function of milling time: (a) area percentage of the magnetic phase, (b) mean hyperfine field, and (c) mean isomer shift of the central nonmagnetic component.

Image of FIG. 5.
FIG. 5.

Percentage of iron in the central component, at , of the RT Mössbauer spectra as a function of milling time.

Image of FIG. 6.
FIG. 6.

Average V content of the bcc phase as a function of milling time . Solid circles are the compositions calculated from the average hyperfine fields. Empty squares are from chemical analyses. Empty circles are calculated from the initial composition, assuming the formation of from the available oxygen.

Image of FIG. 7.
FIG. 7.

XRD patterns of a powder milled (a) for and (b) for and then annealed at for .

Image of FIG. 8.
FIG. 8.

RT Mössbauer spectra of a powder milled (a) for and (b) for and then annealed at for .

Image of FIG. 9.
FIG. 9.

XRD pattern of a powder milled for and then annealed at for . (the peak positions associated to the various phases are stacked as indicated in the inset).

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/content/aip/journal/jap/104/8/10.1063/1.3005876
2008-10-30
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: The effect of oxygen on ball milling of a near-equiatomic FeV sigma phase
http://aip.metastore.ingenta.com/content/aip/journal/jap/104/8/10.1063/1.3005876
10.1063/1.3005876
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