Dependence of electrical resistivity of Fe–Al alloys on composition

Pazourek, Adam; Pfeiler, Wolfgang; Šı́ma, V.

doi:10.1016/j.intermet.2010.01.019

Cited by 8 publications

(2 citation statements)

References 10 publications

(13 reference statements)

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“…There is also an essential difference in the electrical resistivity (and thereby also the absorptivity) between Ti (5.5 × 10 −7 Ωm) and Fe25-40Al at. % (10 ÷ 15 × 10 −7 Ωm [ 26 ]). Collins et al [ 14 ] suggested that the enthalpy of mixing should also be used as a practical guideline for selecting alloy compositions and processing parameters for the direct laser synthesis of alloys from elemental powders, e.g., some amount of the pre-alloyed FeAl powder can be used as an elemental Fe and Al powder blend to generate additional heat in the melt pool.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Fe-Al-Ti Based Intermetallics with the Use of Laser Engineered Net Shaping (LENS)

et al. 2015

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The Laser Engineered Net Shaping (LENS) technique was combined with direct synthesis to fabricate L21-ordered Fe-Al-Ti based intermetallic alloys. It was found that ternary Fe-Al-Ti alloys can be synthesized using the LENS technique from a feedstock composed of a pre-alloyed Fe-Al powder and elemental Ti powder. The obtained average compositions of the ternary alloys after the laser deposition and subsequent annealing were quite close to the nominal compositions, but the distributions of the elements in the annealed samples recorded over a large area were inhomogeneous. No traces of pure Ti were observed in the deposited alloys. Macroscopic cracking and porosity were observed in all investigated alloys. The amount of porosity in the samples was less than 1.2 vol. %. It seems that the porosity originates from the porous pre-alloyed Fe-Al powders. Single-phase (L21), two-phase (L21-C14) and multiphase (L21-A2-C14) Fe-Al-Ti intermetallic alloys were obtained from the direct laser synthesis and annealing process. The most prominent feature of the ternary Fe-Al-Ti intermetallics synthesized by the LENS method is their fine-grained structure. The grain size is in the range of 3–5 μm, indicating grain refinement effect through the highly rapid cooling of the LENS process. The Fe-Al-Ti alloys synthesized by LENS and annealed at 1000 °C in the single-phase B2 region were prone to an essential grain growth. In contrast, the alloys annealed at 1000 °C in the two-phase L21-C14 region exhibited almost constant grain size values after the high-temperature annealing.

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Section: Resultsmentioning

confidence: 99%

Synthesis of Fe-Al-Ti Based Intermetallics with the Use of Laser Engineered Net Shaping (LENS)

et al. 2015

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“…La conductividad eléctrica de una aleación que consta de dos o más fases puede considerarse como una propiedad que se compone aditivamente de las conductividades de dichas fases, si es posible despreciar la influencia de los factores enumerados anteriormente [3] .…”

Section: Introductionunclassified

Determinación del contenido de silicio y cromo en fundiciones grises mediante el método de Van der Pauw

Tremps¹,

Enríquez²,

Morón³

et al. 2013

REVMETAL

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In this paper we show a system based on the resistivity measurement of samples of gray cast iron by the Van der Pauw method to calculate the silicon content in the samples. Twenty five trials have been carried out, studying resistive and metallographic characteristics of the samples. This has demonstrated that it is possible to obtain, by this method, the silicon content in molten flat with low content of alloying elements, also the content of chromium in series smelters where the rate of silicon remains constant.

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Effect of Process Conditions on the Structure and Properties of the Hot-Forged Fe3Al Intermetallic Alloy

Baglyuk

Tolochin

Tolochina

et al. 2016

Powder Metall Met Ceram

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Dependence of electrical resistivity of Fe–Al alloys on composition

Cited by 8 publications

References 10 publications

Synthesis of Fe-Al-Ti Based Intermetallics with the Use of Laser Engineered Net Shaping (LENS)

Synthesis of Fe-Al-Ti Based Intermetallics with the Use of Laser Engineered Net Shaping (LENS)

Determinación del contenido de silicio y cromo en fundiciones grises mediante el método de Van der Pauw

Effect of Process Conditions on the Structure and Properties of the Hot-Forged Fe3Al Intermetallic Alloy

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