Alloying behaviour of Ni3Al, Ni3Ga, Ni3Si and Ni3Ge

Ochial, Shouichi; Oya, Yoshihiro; Suzuki, Tomoo

doi:10.1016/0001-6160(84)90057-9

Cited by 387 publications

(112 citation statements)

References 22 publications

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“…Here it is interesting to note the difference of substitution behavior between compounds studied previously (Ni 3 Al, Ni 3 Ga, Ni 3 Si, and Ni 3 Ge) 10) and compound of this study (Ni 3 Nb). In the former compounds, all of B-subgroup elements lay on the second quadrant and then substituted exclusively for X-sites while the transition metals substituted for Ni-site or for X-site, depending on the relative value of two interaction energies.…”

Section: Thermodynamic Considerationmentioning

confidence: 58%

Alloying Behavior of Ni3Nb

2010

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The site preference of ternary additions in Ni 3 Nb (D0 a ) was determined from the direction of solubility lobes of the GCP phases which were available from the reported ternary phase diagrams and constructed in the present work. It was shown that Cr, Co and Cu preferred the substitution for Ni-site, Ti, V, Hf, Ta and W the substitution for Nb-site, and Fe the substitution for both sites. The thermodynamic model, which was based on the change in total bonding energy of the host compound by a small addition of ternary solute, was applied to predict the site preference of ternary additions. The bond energy of each nearest neighbor pair used in the thermodynamic calculation was derived from the heat of compound formation by Miedema's formula. The agreement between the thermodynamic model and the experimental result was excellent. From both experimental and theoretical results, both the transition and B-subgroup elements have two possibilities, i.e., the case of substitution for Ni-site or the case of substitution for Nb-site, depending on the relative value of two interaction energies.

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Section: Thermodynamic Considerationmentioning

confidence: 58%

Alloying Behavior of Ni3Nb

2010

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“…The atom substitution preference for a ternary addition of X atoms can be directed by the following expression 11) ÁHðNi 3 XÞ=ÁHðNi 3 MÞ 7 ÁHðX 3 MÞ=ÁHðNi 3 MÞ þ P: ð1Þ ÁH is the heat of compound formation calculated by Miedema's formula. If the quantity on the left hand side is smaller, the substitution of X for Ni-site is preferred while if that on the right hand is smaller, the substitution of X for M-site is preferred.…”

Section: Thermodynamic Considerationmentioning

confidence: 99%

“…2), Ti, Zr, and Hf (4), V and Ta (5), Cr, Mo, and W (6), Mn (7), Cu (11), and Al and Ga (13) where the number in a parenthesis is the group number in a periodic table, shows less preference for the Ni sites but almost neutral Note that the atom substitution preference of elements enclosed by a circle, square and triangular marks were confirmed by literature search, and correspond to the substitution for Ta-site, Ni-site and both sites, respectively. with Nb atom and are therefore plotted along the vertical axis of ÁH (Ni 3 X)/ÁH (Ni 3 Nb).…”

Section: )mentioning

confidence: 99%

“…Cr (6) and Al (13) are almost equivalent in both interactions with Ni atom and with Ta atom, and then tend to substitute for both of Niand Ta-sites. On the other hand, W (6), Re (7), Fe and Os (8), Co and Ir (9), Pd and Pt (10), Cu and Au (11), and Si and Ge (14) are attractive with Ta atom but almost neutral with Ni atom, and are therefore plotted along the horizontal axis of ÁH (X 3 Ta)/ÁH (Ni 3 Ta). In this case, these metals substitute for Ni-site.…”

Section: )mentioning

confidence: 99%

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Alloying Behavior of Ni3M-Type Compounds with D0a Structure

2011

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The atom substitution preference of ternary additions in Ni 3 M-type GCP (geometrically close-packed) compounds with D0 a structure was determined from the direction of single-phase region of the GCP phase on the reported ternary phase diagrams. In Ni 3 Nb, Co and Cu preferred the substitution for Ni-site, Hf, Ta, Ti, V and W the substitution for Nb-site, and Fe the substitution for both sites. In Ni 3 Ta, Co, Cu, Fe, Ir, Mn and Re preferred the substitution for Ni-site, Mo and Nb the substitution for Ta-site, and Al and Cr the substitution for both sites. In Ni 3 Mo, Pd and W preferred the substitution for Ni-site, and Al, Nb, Ta, Ti and Zr the substitution for Mo-site. The thermodynamic model, which was based on the change in heat of formation of the host compound by a small addition of ternary solute, was applied to predict the atom substitution preference of ternary additions. The heat of compound formation used in the thermodynamic calculation was derived from Miedema's formula. Good agreement was obtained between the thermodynamic model and the result of the literature search. For Ni 3 Mo, with a small negative heat of formation, a weak binding force between the constituent elements is often enhanced by the addition of the ternary elements that substitute for Mo-site.

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“…Hence, the enthalpy of the solid solution formed by alloying, the structure and the solubility of the alloying element are key considerations for the γ phase. For the γ' phase, addition of ternary alloying elements shifts the phase boundary as shown in figure 1.7 [4,83]. First principles studies have indeed shown that Pt preferentially goes to the Ni sublattice while elements like Cr and Hf prefer the Al sub-lattice [84][85][86].…”

Section: Phase Stabilitymentioning

confidence: 99%

Microstructures and oxidation behavior of some Molybdenum based alloys

Ray

2011

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Alloying behaviour of Ni3Al, Ni3Ga, Ni3Si and Ni3Ge

Cited by 387 publications

References 22 publications

Alloying Behavior of Ni<SUB>3</SUB>Nb

Alloying Behavior of Ni<SUB>3</SUB>Nb

Alloying Behavior of Ni<SUB>3</SUB>M-Type Compounds with D0<SUB>a</SUB> Structure

Microstructures and oxidation behavior of some Molybdenum based alloys

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