A thermodynamic study on the V-C and FE-V systems

Lee, Byeong-Joo; Nyung, Lee Dong

doi:10.1016/0364-5916(91)90006-6

Cited by 19 publications

(1 citation statement)

References 11 publications

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“…Hf, Zr and Ti, which were predicted to form low energy (more stable) G-phases, have a large energetic preference for the Mn site (Zr>Hf>Nb>Ti>Ta) and it is expected that the inclusion of these species in the melt will significantly promote G-phase formation. Interestingly, of the X metals that form low energy G-phases, Mo and V do not display this behaviour in substitution; in the case of the latter element, this is due to the stability of V in the BCC Fe lattice evidenced by the large solubility in their binary phase diagram [49]. The behaviour of Mo is less clear and its influence on G-phase precipitation has been a topic of experimental investigation in stainless steels, in the past.…”

Section: Substitution From Bcc Fe Into the Mn6ni16si7 G-phasementioning

confidence: 99%

G-phase strengthened iron alloys by design

King

Yang²,

Whiting

et al. 2020

Acta Materialia

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Density functional theory (DFT) calculations were used to model G-phase precipitates of formula X6M16Si7 where X is Cr, Hf, Mn, Mo, Nb, Ta, Ti, V, W and Zr and M is either Fe or Ni. It was found that the occupancy of the d-orbital is correlated to the formation enthalpies of each structure. Past thermal expansion coefficient data was used to predict the lattice misfit between each G-phase and body centred cubic (BCC) Fe. All except Hf and Zr containing G-phases were predicted to have zero misfit between 581−843 K. Of the Ni containing G-phases, Mn6Ni16Si7 was predicted to have the most similar elastic properties to BCC Fe. DFT calculations of the substitution energies of Al,

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Section: Substitution From Bcc Fe Into the Mn6ni16si7 G-phasementioning

confidence: 99%