Modeling of site occupancies in B2 FeAl and NiAl alloys with ternary additions

Banerjee, Rajarshi; Amancherla, S.; Banerjee, S.; Fraser, Hamish L.

doi:10.1016/s1359-6454(01)00371-8

Cited by 26 publications

(5 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Both intermetallics have an ordered B2 structure and a lattice parameter in agreement with ours (0.2865 nm for B2-FeAl and 0.2887 nm for B2-NiAl). Using experiment and simulation [7,19,20], it has been well established that Fe atoms may occupy the Al or Ni sites in the ternary FeNiAl where there is a strong tendency to maximize the Ni-Al and Fe-Al interactions and B2-FeNiAl particles with similar size as ours have been reported. To conclude, we may describe the intermetallic precipitates present in the alloy under study as B2-FeNiAl nanoparticles.…”

Section: About the Nature Of The Ordered Precipitatessupporting

confidence: 69%

TEM study of structural hardening in a new martensitic steel for aeronautic application

Pettinari‐Sturmel¹,

Kedjar²,

Douin³

et al. 2013

Materials Science and Engineering: A

View full text Add to dashboard Cite

A new generation of high performance martensitic steel hardened by FeNiAl intermetallic nanoprecipitates has been investigated using conventional and advanced Transmission Electron Microscopy (TEM). Cs-corrected high resolution TEM has been used to provide a fine and accurate microstructural characterization: the shape, size and crystallographic characteristics of the nanoprecipitates have been identified. TEM in situ straining tests have been performed to determine the relevant parameters, which control the deformation. The nanoprecipitates are observed to create anchor lines acting against the propagation of the mobile dislocations and to be crossed by shearing process. In addition, in situ TEM experiments have allowed to measure directly the average distance between these nanoprecipitates along the dislocation lines. This value is of great interest as it is the more accurate data to be used in the calculation of the stress associated with the structural hardening. The strength of the alloy due to these nanoprecipitates has been also determined. It is in good agreement with the value deduced from macroscopic mechanical tests.

show abstract

Section: About the Nature Of The Ordered Precipitatessupporting

confidence: 69%

TEM study of structural hardening in a new martensitic steel for aeronautic application

Pettinari‐Sturmel¹,

Kedjar²,

Douin³

et al. 2013

Materials Science and Engineering: A

View full text Add to dashboard Cite

show abstract

“…Banerjee et al [91,92] also applied the ALCHEMI method on several B2-FeAl and B2-NiAl alloys with ternary additions (Ti, V, Cr, Mn, Co, Ni, Cu). Three ternary alloys in the FeeNieAl system were investigated, namely, Fe 50 Ni 10 Al 40 , Fe 10 Ni 50 Al 40 , and Fe 30 Ni 25 Al 45 .…”

Section: Methodsmentioning

confidence: 99%

Assessment of the Fe–Ni–Al system

Frisk²,

2006

View full text Add to dashboard Cite

“…The solid solubility for Ti in aFe (A2) and FeAl (B2) increases with increasing temperature and both phases contain up to about 10 at.% Ti at 1000 C [67]. The site occupancy of Ti in B2-ordered FeAl has been determined by ALCHEMI [75] and has been modeled [76,77]. D0 3 -ordered Fe 3 Al can even contain up to 25 at.% Ti in solid solution [67,78].…”

Section: Effect Of Alloying the Binary Phases With The Third Componentmentioning

confidence: 99%

Assessment of the Al–Fe–Ti system

2006

View full text Add to dashboard Cite

The Al-Fe-Ti system has been assessed and the limiting binary systems are shortly reviewed.Based on a thorough review of the literature, isotherms at 800, 900, and 1000 °C have been re-evaluated and a provisional isotherm at 1200 °C is presented for the first time. The effect of alloying the binary phases with the third component is reviewed with regard to the ternary homogeneity ranges, crystallography, order/disorder transformations, and site occupancies. Of the variously reported ternary compounds only the existence of "Al 2 FeTi" (τ 2 ) and "Al 8 FeTi 3 " (τ 3 ) is confirmed. The occurrence of the phases τ 2 * , τ′ 2 , and of a new stacking variant of TiAl is still under discussion, while the existence of the phases Fe 2 AlTi (τ 1 ) and Fe 25 Al 69 Ti 6 (X) is ruled out. The presented reaction scheme corroborates the isothermal sections and also a representation of the liquidus surface is given. Magnetic, electrical, thermochemical, atomistic and diffusion data for Al-Fe-Ti alloys are summarised and an overview about studies on modelling of phase equilibria and phase transformations is given.

show abstract

Modeling of site occupancies in B2 FeAl and NiAl alloys with ternary additions

Cited by 26 publications

References 15 publications

TEM study of structural hardening in a new martensitic steel for aeronautic application

TEM study of structural hardening in a new martensitic steel for aeronautic application

Assessment of the Fe–Ni–Al system

Assessment of the Al–Fe–Ti system

Contact Info

Product

Resources

About