Control of intermetallic compound layers at interface between steel and aluminum by diffusion-treatment

Kobayashi, Shoichi; Yakou, Takao

doi:10.1016/s0921-5093(02)00053-9

Cited by 532 publications

(243 citation statements)

References 13 publications

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“…2e-2g). This is because enhancing the anneal temperature accelerates the diffusion of alloy elements, which results in the forming and increasing of secondary phase particle [19,20] . At 850 °C, there were nearly no precipitates of secondary phase particle, which maybe due to the dissolution of particles with the increasing anneal temperature.…”

Section: Secondary Phase Particlesmentioning

confidence: 99%

Effect of Anneal Temperature on Microstructure and Mechanical Properties of 0Cr21Ni6Mn9N cold Drawn Pipe

Xiong¹,

Zheng²,

Yuan³

et al. 2016

Proceedings of the 2nd Annual International Conference on Advanced Material Engineering (AME 2016)

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Abstract. The microstructure and mechanical properties of 0Cr21Ni6Mn9N austenitic stainless steel cold drawn pipe were investigated at various annealing temperatures. It was found that the tensile strength and the yield strength increased slightly, and then decreased with the temperature increasing from 200 to 750 °C. The highest value of tensile strength and yield strength reached 1062 and 942MPa at 600 °C, respectively. However, the elongation has an opposite trend to the tensile strength and yield strength. The microstructure evolution of the cold drawn pipe annealed at different temperatures was observed. The results indicate that when annealed below 550 °C, recovery is dominant. At 550 °C, it is recovery and partial recrystallization. Over 550 °C, complete recrystallization has likely occurred. Moreover, the Cr 2 N particles near the grain boundaries were found, and the amount of precipitates along the grain boundary indexed as M 23 C 6 were increasing at 650-800 °C.

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Section: Secondary Phase Particlesmentioning

confidence: 99%

Effect of Anneal Temperature on Microstructure and Mechanical Properties of 0Cr21Ni6Mn9N cold Drawn Pipe

Xiong¹,

Zheng²,

Yuan³

et al. 2016

Proceedings of the 2nd Annual International Conference on Advanced Material Engineering (AME 2016)

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“…The coated steels gained little weight during the thousand hours of exposure and are highly resistant to oxidation. When the corrosive attack began, the coated steel gained mass at high speed in the first 400 hours and then more slowly because it has formed a superficial alumina layer with an oxide rich in silicon, chromium and nickel, protecting the coating from additional corrosive attack (Kobayashi, & Yakou, 2002;Huttunen, Kalidakis, Stott, Perez, & Lepistö, 2009). Unlike the uncoated steels, the coated steels showed a linear attack that does not decrease with time.…”

Section: Steam Oxidationmentioning

confidence: 99%

Aluminum-silicon coatings on austenitic stainless steel (AISI 304 and 317) deposited by chemical vapor deposition in a fluidized bed

Arévalo¹,

Trujillo²,

Castañeda³

2014

ing.inv.

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Aluminum-silicon coatings were deposited onto stainless steels AISI 304 and AISI 317. The deposition was performed at 540°C with a ratio of active gases HCl/H2 of 1/15.3; argon was used as a carrier gas. The bed of the FBR-CVD process consisted of 2.5 g aluminum powder, 7.5 g silicon powder and 90 g alumina. After the coatings were deposited, each sample was given a heat treatment to improve its mechanical properties and oxidation behavior by diffusing the alloying elements. Thermodynamic simulation was performed with Thermo-Calc software to investigate the composition of the deposited material. The coated and uncoated specimens were exposed to temperatures of 750 ºC in an atmosphere where the vapor was transported to the samples using a flow of N2 of 40 ml/min and 100% water vapor (H2O). The coated specimens gained little weight during the thousand hours of exposure and will thus guard against a corrosive attack compared to the uncoated substrates. In addition, the coated stainless steels show an oxidation rate with a logarithmic trend while the uncoated steel oxidation rate showed a linear trend.Keywords: Coating, aluminum-silicon, chemical vapor deposition, high temperature oxidation, stainless steel, oxidation rate, steam oxidation. RESUMENSe obtuvieron recubrimientos de aluminio-silicio en los aceros inoxidables AISI 304 y AISI 317. La deposición se realizó a 540 °C, con una proporción de gases activos (HCl/H2: 1/15.3), como gas de arrastre se utilizó argón. El lecho del proceso CVD-FBR estaba formado por 2,5 g de polvo de aluminio, 7,5 g polvo de silicio y 90 g de alúmina. Después de depositados los recubrimientos, se le dio un tratamiento térmico para mejorar sus propiedades mecánicas y su comportamiento frente a la oxidación, por entre la difusión de los elementos de aleación. La simulación termodinámica se realizó con el software Thermo-Calc para obtener información sobre la posible composición del material depositado. Las muestras recubiertas y sin recubrir, se expusieron a 750 ºC en una atmósfera donde el vapor se transporta a las muestras usando un flujo de N2 de 40 ml / min y 100% de vapor de agua (H2O). Aceros recubiertos ganaron algo de peso durante las mil horas de exposición y resisten muy bien el ataque corrosivo frente a los sustratos recubiertos. Además, los aceros inoxidables recubiertos muestran una velocidad de oxidación con tendencia logarítmica, mientras que la velocidad de oxidación de acero sin recubrimiento tiene tendencia lineal.Palabras clave: Recubrimiento, Aluminio/Silicio, Deposición Química de Vapor, Oxidación a Alta temperatura, acero inoxidable, velocidad de oxidación, oxidación en vapor.

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“…[10,11,33,34] The IM layer which forms between the aluminum weld and the steel sheet ensures dissimilar bonding, but limiting its thickness is mandatory for obtaining ductile joints for both static and dynamic applications. [20,21] Among the Al x Fe y phases listed in the binary Al-Fe phase diagram, [35] two main phases were identified in laboratory experiments to form at the interface between solid iron or steel and liquid aluminum or its alloys: Al 5 Fe 2 as the major g-phase [36][37][38] together with Al 3 Fe (also referred to as Al 13 Fe 4 ) as the minor h-phase. [39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55] Both [17][18][19]21,24,27,29] or at least either one [22,23] of these two phases were also found to form during dissimilar CMT welding of aluminum alloys with steel.…”

Section: Introductionmentioning

confidence: 99%

Influence of Filler Alloy Composition and Process Parameters on the Intermetallic Layer Thickness in Single-Sided Cold Metal Transfer Welding of Aluminum-Steel Blanks

Silvayeh

Vallant

Sommitsch

et al. 2017

Metall Mater Trans A

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Hybrid components made of aluminum alloys and high-strength steels are typically used in automotive lightweight applications. Dissimilar joining of these materials is quite challenging; however, it is mandatory in order to produce multimaterial car body structures. Since especially welding of tailored blanks is of utmost interest, single-sided Cold Metal Transfer butt welding of thin sheets of aluminum alloy EN AW 6014 T4 and galvanized dual-phase steel HCT 450 X + ZE 75/75 was experimentally investigated in this study. The influence of different filler alloy compositions and welding process parameters on the thickness of the intermetallic layer, which forms between the weld seam and the steel sheet, was studied. The microstructures of the weld seam and of the intermetallic layer were characterized using conventional optical light microscopy and scanning electron microscopy. The results reveal that increasing the heat input and decreasing the cooling intensity tend to increase the layer thickness. The silicon content of the filler alloy has the strongest influence on the thickness of the intermetallic layer, whereas the magnesium and scandium contents of the filler alloy influence the cracking tendency. The layer thickness is not uniform and shows spatial variations along the bonding interface. The thinnest intermetallic layer (mean thickness < 4 lm) is obtained using the silicon-rich filler Al-3Si-1Mn, but the layer is more than twice as thick when different low-silicon fillers are used.

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Control of intermetallic compound layers at interface between steel and aluminum by diffusion-treatment

Cited by 532 publications

References 13 publications

Effect of Anneal Temperature on Microstructure and Mechanical Properties of 0Cr21Ni6Mn9N cold Drawn Pipe

Effect of Anneal Temperature on Microstructure and Mechanical Properties of 0Cr21Ni6Mn9N cold Drawn Pipe

Aluminum-silicon coatings on austenitic stainless steel (AISI 304 and 317) deposited by chemical vapor deposition in a fluidized bed

Influence of Filler Alloy Composition and Process Parameters on the Intermetallic Layer Thickness in Single-Sided Cold Metal Transfer Welding of Aluminum-Steel Blanks

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