Effect of Ternary Alloying Elements Addition on the Order-Disorder Transformation Temperatures of B2-Type Ordered Fe-Al-X Intermetallics

Yildirim, Mehmet; Akdeniz, M. Vedat; Mekhrabov, Amdulla O.

doi:10.1007/s11661-011-1059-3

Cited by 17 publications

(3 citation statements)

References 27 publications

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“…when a minor concentration of a ternary impurity is introduced to a binary B2-type ordered alloy, a change in O-d phase transformation temperature ΔT = T oc -T o is expressed as [13]:…”

Section: Theory Of Ternary Alloysmentioning

confidence: 99%

“…it is probable that a change in symmetry and physical properties of the alloy and basis of the unit cell would ultimately lead to a significant change in electronic structures and physical properties [8]. As the constituent atoms in alloys strongly influence their numerous physical properties so, it is expected that an addition of a third element to the binary CoTi alloy will bring a drastic change in its physical properties, making it useful for several technological applications [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

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Archives of Metallurgy and Materials

Hussain,

Ziya,

Atiq

et al. 2020

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The statistical-thermodynamic theory of ordering and electronic theory of ordering in the pseudo-potential approximation was used to study the influence of ternary addition of some transition metals on the atomic ordering behavior of Co 0.5 (Ti 1-x m x ) 0.5 alloys with m = Fe, Pt, re, V, Cr, mn, Ni, Cu, Zn, Zr, Ag, Hf or Au up to a concentration of 1 at.%. The partial ordering energies, order-disorder phase transformation temperatures and partial short range order parameters have been calculated for these alloys. The analysis shows that the impurity elements in Co 0.5 (Ti 1-x m x ) 0.5 alloys can be divided into two main groups on the basis of lattice site occupancy i.e. m = V, Cr, mn, Cu, Zn, Zr, Ag, Hf and Au mainly substitute for Co sublattice sites whereas m = Fe, Ni, Pt or re mainly substitute for Ti sublattice sites. Further, the order-disorder transformation temperatures were found to either increase or remain nearly unchanged by the addition of ternary impurities in the CoTi alloy depending on the absolute value of the partial ordering energies. Alloys of Ti with V, Cr, mn, Cu, Zn, Zr, Ag, Hf or Au in place of Co and alloys of Co with Fe, Ni, Pt or re in place of Ti can be predicted for future. The results of the present analysis are in good agreement with the available experimental data on these alloys.

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“…when a minor concentration of a ternary impurity is introduced to a binary B2-type ordered alloy, a change in O-d phase transformation temperature ΔT = T oc -T o is expressed as [13]:…”

Section: Theory Of Ternary Alloysmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

Hussain,

Ziya,

Atiq

et al. 2020

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“…On the other hand, ordered intermetallics constitute a unique class of materials that form long-range ordered (LRO) crystal structure below a critical temperature that is generally referred to as the critical order-disorder phase transition temperature [15,16]. The interest in such materials emanate from their attractive properties such as high strength, stiffness, stability and oxidation resistance ideal for structural applications at elevated temperatures [15].…”

Section: Introductionmentioning

confidence: 99%

Effect of alloying on the phase stability and elastic properties of L1₂ Cu₃Pt crystal structure

et al. 2022

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The alloying effect of three elements, namely Al, Cr and Zn, on the Pt site of L12 Cu3Pt phase was investigated using DFT (density functional theory) based first-principle calculations in attempt to stabilize it in the form of L12 Cu3Pt1-xYx ternary alloy. On the basis of phase stability and elastic properties, the substitution behaviour of all three alloying elements were compared with properties of thermodynamically sluggish Cu3Pt phase. The calculated heats of formation reveal that the thermodynamic phase stability is gradually enhanced with increasing content of aluminium alloying and diminished with increasing content of zinc and chromium. In this current work, the stress-strain approach was used according to Hooke’s law to calculate elastic properties such as elastic constants, Young’s modulus E, shear modulus G, bulk modulus B and Poisson’s ratio v, as they play an important role to investigate the resulting mechanical properties. The calculated results show that alloying with all three elements maintains the mechanical stability criteria of cubic crystals. Considered L12 Cu3Pt1-xYx ternary alloys exhibit the most ductile character with Al addition, followed by Cr, whereas introduction of Zn yielded lowest ductility at higher compositions.

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Microstructural Investigation and Phase Relationships of Fe-Al-Hf Alloys

Yildirim

Akdeniz

Mekhrabov

2014

Metall Mater Trans A

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Effect of Ternary Alloying Elements Addition on the Order-Disorder Transformation Temperatures of B2-Type Ordered Fe-Al-X Intermetallics

Cited by 17 publications

References 27 publications

Archives of Metallurgy and Materials

Archives of Metallurgy and Materials

Effect of alloying on the phase stability and elastic properties of L1₂ Cu₃Pt crystal structure

Microstructural Investigation and Phase Relationships of Fe-Al-Hf Alloys

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Effect of Ternary Alloying Elements Addition on the Order-Disorder Transformation Temperatures of B2-Type Ordered Fe-Al-X Intermetallics

Cited by 17 publications

References 27 publications

Archives of Metallurgy and Materials

Archives of Metallurgy and Materials

Effect of alloying on the phase stability and elastic properties of L12 Cu3Pt crystal structure

Microstructural Investigation and Phase Relationships of Fe-Al-Hf Alloys

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Product

Resources

About

Effect of alloying on the phase stability and elastic properties of L1₂ Cu₃Pt crystal structure