The effect of dissolution on the growth of the Fe2Al5 interlayer in the solid iron -liquid aluminium system

Yeremenko, V. N.; Natanzon, Ya. V.; Dybkov, V. I.

doi:10.1007/bf00540620

Cited by 135 publications

(52 citation statements)

References 3 publications

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“…The kinetics of growth of the Fe-Al intermetallic compounds is dependant on nucleation conditions, chemical reactions, and diffusion coefficient. [29][30][31][32][33][34][35][36][37][38] Denner et al 29) detected the formation of η-Fe2Al5 and θ-FeAl3 compounds in the case of the interaction between liquid aluminum and solid iron during hot dip aluminizing. The parabolic kinetics of growth of the two intermetallic compounds was proposed in references, 30,31) whereas negative deviations from the parabolic relationship was observed after long reaction times between the liquid aluminum saturated with Fe and solid iron.…”

Section: Introductionmentioning

confidence: 99%

“…The parabolic kinetics of growth of the two intermetallic compounds was proposed in references, 30,31) whereas negative deviations from the parabolic relationship was observed after long reaction times between the liquid aluminum saturated with Fe and solid iron. 32,33) The contradiction was resolved by Dybkov who confirmed the presence of a linear growth stage after the prior parabolic growth, i.e. paralinear kinetics of growth during the interaction process between liquid aluminum and 18Cr-10Ni stainless steel.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of Intermetallic Compounds in Dissimilar Material Resistance Spot Welded Joint of High Strength Steel and Aluminum Alloy

et al. 2011

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Dissimilar materials of H220 Zn-coated high strength steel and 6008 aluminum alloy were welded by median frequency resistance spot welding. Interfacial characteristics and kinetics of growth of intermetallic compound layer at steel/aluminum interface in the welded joint were investigated. The intermetallic compound layer was mainly made up of η-Fe2Al5 and θ-FeAl3 phases, and its morphology and thickness varied with positions along the interface. The growth behavior of the intermetallic compound layer was dominated by η-Fe2Al5, which exhibited parabolic characteristic. The growth coefficient of η-Fe2Al5 could be expressed as with k0 of 132 m 2 /s and Q of 239 kJ/mol. The kinetics of growth of the intermetallic compound layer indicated that its formation and growth were mainly driven by reactive diffusion between Fe and Al atoms, and hence the thickness and morphology of the layer were dependant on interaction time between liquid aluminum alloy and solid steel, and also interfacial temperature history during welding. The brittle intermetallic compound layer at the steel/aluminum interface was the weak zone where cracks inclined to derive and propagate during tensile shear testing. The fracture surfaces of the welded joint displayed mixed fracture morphology with both brittle and ductile features.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characterization of Intermetallic Compounds in Dissimilar Material Resistance Spot Welded Joint of High Strength Steel and Aluminum Alloy

et al. 2011

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“…The reactive diffusion between liquid Al and solid Fe or Fe-base alloys has been experimentally studied by many researchers. [62][63][64][65][66][67][68][69][70][71][72] In an experiment by Bouché et al, 69) Fe/Al diffusion couples were prepared by a melt bath technique, and then isothermally annealed at temperatures of 973-1173 K. A similar experiment was conducted by Bouayad et al 71) In the binary Fe-Al system, 1) FeAl 3 , Fe 2 Al 5 , FeAl 2 and FeAl are the stable compounds at these temperatures. According to their experimental results, 69,71) however, only Fe 2 Al 5 and FeAl 3 are formed as visible layers at the Fe/Al interface in the diffusion couple owing to annealing.…”

Section: Introductionmentioning

confidence: 99%

Morphology of Compounds Formed by Isothermal Reactive Diffusion between Solid Fe and Liquid Al

Tanaka

Kajihara

2009

Mater. Trans.

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“…The reactive diffusion between liquid aluminum and solid iron have been extensively studied, and it is known that hard and brittle compounds like Fe2Al5 form at the interface. [1][2][3][4][5][6][7] On the other hand, an aluminizing method using an aluminum foil has been proposed to facilitate thickness control of an aluminized layer on the steel. 8,9) This is composed of the following two steps: (1) the aluminum foil is bonded to the steel at temperatures below the melting point of aluminum, and (2) the aluminum-coated steel is held at temperatures above the melting point of aluminum, and then aluminizing is completed.…”

Section: Introductionmentioning

confidence: 99%

Aluminizing of High-carbon Steel by Explosive Welding and Subsequent Heat Treatment

2015

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A carbon steel plate containing 0.87 mass% C was coated with an aluminum foil with a thickness of 100 μ m by explosive welding. This aluminum-coated steel was heat-treated in the temperature range of 973-1 273 K for up to 7.2 ks in the air to investigate reactions between molten aluminum and high-carbon steel from the viewpoint of aluminide coating. An aluminized layer was basically composed of Fe2Al5, FeAl, Fe3Al containing carbon (Fe3Al(C)), and ferrite stabilized by aluminum diffusion (α-Fe(Al)). FeAl2 was detected with Fe2Al5 at heating temperatures of more than 1 223 K, whereas FeAl had two layers due to its chemical composition. In addition, defects like a crack and a void were observed in the vicinity of the FeAl/α-Fe(Al) interface after heating at 1 273 K for 3.6 ks. To reduce brittle Fe2Al5 and FeAl2 in the aluminized layer, the steel coated with aluminum with a thickness of 50 μ m was prepared and then heat-treated under the same conditions. At 1 173 K, the region consisting of FeAl, Fe3Al(C), and α-Fe(Al) accounted for a large part of the aluminized layer. This aluminized steel was subjected to quenching and tempering on the basis of features of the used bare steel. As a result, the hardness near the surface of the aluminized layer was approximately equal to that of the steel substrate.

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The effect of dissolution on the growth of the Fe2Al5 interlayer in the solid iron -liquid aluminium system

Cited by 135 publications

References 3 publications

Characterization of Intermetallic Compounds in Dissimilar Material Resistance Spot Welded Joint of High Strength Steel and Aluminum Alloy

Characterization of Intermetallic Compounds in Dissimilar Material Resistance Spot Welded Joint of High Strength Steel and Aluminum Alloy

Morphology of Compounds Formed by Isothermal Reactive Diffusion between Solid Fe and Liquid Al

Aluminizing of High-carbon Steel by Explosive Welding and Subsequent Heat Treatment

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