The effect of carbon and silicon additions on the creep properties of Fe-40 at. % Al type alloys at elevated temperatures

Dobeš, F.; Kratochvı́l, Petr; Vodičková, Věra

doi:10.1016/j.intermet.2011.05.024

Cited by 8 publications

(4 citation statements)

References 19 publications

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“…% Al type alloys was investigated. It was verified that both carbon and silicon improved the creep resistance, but the effect of silicon was found more significant [5].…”

Section: Introductionmentioning

confidence: 89%

The Microstructure Evolution of Fe-28Al-15Si-0.2Zr Alloy during Different Heat-Treatment

Švec

Vodičková

Hanus

et al. 2020

DDF

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The structures of Fe-28Al-15Si-0.2Zr iron aluminide in the as cast state and in three states after heat-treatments (at 800 °C for 100 hours, at 1000 °C for 24 hours and at 1200 °C for 2 hours) were investigated for verification of secondary phases stability. The type and distribution of precipitates were described by means of light optical microscopy and scanning electron microscopy equipped with an energy dispersive analysis. The presence of complex carbides based on Fe-Si-Zr was shown. The bulk hardness and image analysis of samples was measured for verification of dissolution of secondary phase particles to the matrix. Short-term annealing did not influence distribution and dissolution of secondary particles significantly, while long-term annealing (at 800 °C for 100 hours) leads to the sporadic formation of fine eutectic areas.

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“…% Al type alloys was investigated. It was verified that both carbon and silicon improved the creep resistance, but the effect of silicon was found more significant [5].…”

Section: Introductionmentioning

confidence: 89%

The Microstructure Evolution of Fe-28Al-15Si-0.2Zr Alloy during Different Heat-Treatment

Švec

Vodičková

Hanus

et al. 2020

DDF

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“…It has been found [1] that the addition of silicon increases the strength of these alloys at high temperatures, the creep resistance at high temperatures, and also the oxidation resistance. In the research of the FeAl-based alloy called Pyroferal, the influence of silicon on the formation of a composite-type structure, which is associated with excellent high-temperature mechanical properties of this alloy, was demonstrated [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Cr Addition and Heat Treatment on Dilatometric Characteristics of Cast Fe-Al-Si Intermetallic Alloys

Vodičková¹,

Prokopčáková²,

Švec³

et al. 2022

Manufacturing Technology

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The cast Fe-Al-Si type intermetallic alloys (with or without chromium content) were investigated with the aim to obtain the values of thermal expansion coefficient and describe the dilatometric behavior of alloys. The effect of chromium addition, as well as the influence of heat treatment on the structure and dilatometric characteristics (thermal expansion coefficient, CTE), were described. It has been shown that the presence of chromium does not significantly influence the values of thermal expansion coefficient of as-cast alloys so that chromium addition can be substituted by higher silicon content. The annealing used for phase stabilization slightly decreases the CTE values for chromium doped alloys, nevertheless only in the higher temperature range. In comparison, CTE values of the alloy without chromium are slightly increased by the annealing used in the whole temperature interval. But, the differences are not significant from the point of view of technical practice.Fe 3 Al-type iron aluminides silicon and chromium addition thermal expansion coefficient heat-treatment

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“…The effect of silicon on the formation of the strengthening Al 4 C 3 phase in Fe–Al—type iron aluminides with carbon addition was investigated [ 23 ]. The presence of aluminum carbide in the structure proved essential for the creep resistance improvement of this group of iron aluminides [ 24 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Higher Silicon Content and Heat Treatment on Structure Evolution and High-Temperature Behaviour of Fe-28Al-15Si-2Mo Alloy

et al. 2021

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This paper describes the structure and properties of cast Fe3Al-based alloy doped with 15 at. % of silicon and 2 at. % of molybdenum. The higher content of silicon is useful for the enhancement of high-temperature mechanical properties or corrosion resistance of iron aluminides but deteriorates their workability due to increased brittleness. It was found that the presence of both alloying elements leads to an increase of values of the high-temperature yield stress in compression. The heat treatment (annealing at 800 °C for 100 h) used for the achievement of phase stability causes the grain coarsening, so the values of the high-temperature yield stress in compression are lower at 600 °C and 700 °C in comparison to values measured for the as-cast state. This stabilization annealing significantly improves the workability/machinability of alloy. Furthermore, the higher silicon content positively affects the values of the thermal expansion coefficient that was found to be lower in the temperature range up to 600 °C compared to alloys with lower content of silicon.

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The effect of carbon and silicon additions on the creep properties of Fe-40 at. % Al type alloys at elevated temperatures

Cited by 8 publications

References 19 publications

The Microstructure Evolution of Fe-28Al-15Si-0.2Zr Alloy during Different Heat-Treatment

The Microstructure Evolution of Fe-28Al-15Si-0.2Zr Alloy during Different Heat-Treatment

The Influence of Cr Addition and Heat Treatment on Dilatometric Characteristics of Cast Fe-Al-Si Intermetallic Alloys

Effect of Higher Silicon Content and Heat Treatment on Structure Evolution and High-Temperature Behaviour of Fe-28Al-15Si-2Mo Alloy

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