Precipitation and age-hardening in the Fe–27Co–8Mo alloy

Galimberti, P.; Lay, S.; Antoni‐Zdziobek, A.

doi:10.1016/j.intermet.2011.10.019

Cited by 9 publications

(1 citation statement)

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“…The FK-phases have been of both technological and scientific interests. The former stems from the fact that precipitation of these phases in technologically important materials, e. g. σ in high-Cr steels or µ in Co, Fe and Ni based superalloys, drastically deteriorates their useful properties like corrosion resistance, creep strength, impact toughness or tensile ductility e. g. in [7][8][9][10]. In other words, the precipitation of the FK-phases is highly undesired from the industrial view-point, hence their formation should be avoided or, at least, controlled.…”

Section: Introductionmentioning

confidence: 99%

Structural and electronic properties of the μ-phase Fe–Mo compounds

Cieślak¹,

Przewoźnik²,

Dubiel³

2014

Journal of Alloys and Compounds

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Structural (lattice parameters and sub lattice occupancies) and electronic (chargedensity and electric field gradient) properties in a series of µ-Fe 100-x Mo x (37.5≤x≤44.5) compounds were studied experimentally (X-ray diffraction and Mӧssbauer spectroscopy) and theoretically (charge and spin self-consistent Korringa-KohnRostoker Green's function method). The lattice parameters a and c showed a linear increase with x while all five lattice sites were found to be populated by both alloying elements: A(1a) and B(6h) predominantly by Fe atoms whereas C(2c) and D(2c') by Mo atoms hardly depending on the composition. The population of Fe atoms on the site E(2c'') was ranging between ∼50% at x=37.5 and ∼20% at x=44.5. Fe-site charge-density (isomer shift) and the electric field gradient (quadrupole splitting, QS) were revealed to be characteristic of the lattice site and both of them were almost xindependent. The difference in the charge-density at Fe-atoms at the sites B (the highest value) and those at the sites D (the lowest value) was estimated as high as 0.18 electrons. The average charge-density increases linearly with x. The largest QSvalues were those at the sites A and C, while the smallest ones at the site D. The average QS-value was 0.25 mm/s.

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Section: Introductionmentioning

confidence: 99%