Alloys with Lithium

Белов, Н. А.; Eskin, Dmitry; Aksenov, A. A.

doi:10.1016/b978-008044537-3/50008-1

Cited by 32 publications

(58 citation statements)

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“…Common intermetallic phases in foil stock AlFeMnSi alloys (AA8006 type) are a-AlFeMnSi, Al 3 Fe, and Al 6 (FeMn). [25,26] In the crystal structure of Al 3 Fe, Mn can substitute Fe to a maximum solubility of 4-5 pct. [25] Therefore, the lath-shaped particles are assigned to the Al 3 Fe phase with a limited content of Mn.…”

Section: B Homogenized Stripmentioning

confidence: 99%

“…[25,26] In the crystal structure of Al 3 Fe, Mn can substitute Fe to a maximum solubility of 4-5 pct. [25] Therefore, the lath-shaped particles are assigned to the Al 3 Fe phase with a limited content of Mn. A phenomenon accompanying the presence of the lath-shaped Al 3 Fe particle was the disappearance of the fine cubic a-Al 15 (FeMn) 3 Si 2 dispersoids in the same region after the homogenization treatment.…”

Section: B Homogenized Stripmentioning

confidence: 99%

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Microstructure Evolution in the Near-Surface Region During Homogenization of a Twin-Roll Cast AlFeMnSi Alloy

Wang

Zhou

Thompson

et al. 2016

Metall Mater Trans A

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A near-surface deformed layer, comprising ultrafine grains of 50-500 nm diameters with the grain boundaries being decorated by a high population density of fine cubic a-Al 15 (FeMn) 3 Si 2 dispersoids and oxide/lubricant particles, was generated in a foil stock AlFeMnSi alloy during twin-roll casting due to severe shear deformation within the near-surface region. During a subsequent multi-step homogenization treatment at temperatures in the range of 713 K and 853 K (440°C and 580°C), the fine cubic a-Al 15 (FeMn) 3 Si 2 dispersoids within the near-surface layer were dissolved, while sparse, large lath-shaped Al 3 Fe particles formed in the same region. Significant grain growth took place within the near-surface layer due to the loss of grain boundary pinning by the dispersoids, leading to the removal of the ultrafine-grained microstructure within the near-surface region. However, at local regions where the population density of oxide particles was sufficiently high to provide grain boundary pinning, the ultrafine-grained microstructure was preserved within the near-surface layer.

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Section: B Homogenized Stripmentioning

confidence: 99%

Section: B Homogenized Stripmentioning

confidence: 99%

Microstructure Evolution in the Near-Surface Region During Homogenization of a Twin-Roll Cast AlFeMnSi Alloy

Wang

Zhou

Thompson

et al. 2016

Metall Mater Trans A

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“…3) These temperatures are sufficiently high to melt various precipitates, such as Al 8 Mg 5 , Al 6 CuMg 4 , Al 2 CuMg 4 , remaining in aluminum matrix. 27) Partial melting of the matrix AS 5J32 RS 5052 (b) (a) Fig. 6 Fractured positions during tensile test when the 5052 was at the retreating side: (a) 1000 rpm, 100 mm/min, (b) 1500 rpm, 100 mm/min.…”

Section: Tensile Properties and Fracture Analysismentioning

confidence: 99%

Effect of Welding Parameters on Weld Formation and Mechanical Properties in Dissimilar Al Alloy Joints by FSW

et al. 2010

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The dissimilar Al alloys, 5052 and 5J32, were joined by friction stir welding (FSW) technique under several welding conditions, including material arrangement. The tool rotation speeds were 1000 and 1500 rpm, and the welding speeds were varied within the range from 100 to 400 mm/min. At a tool rotation speed of 1000 rpm, all joints with the 5052 on the advancing side exhibited better properties than those with the opposite arrangement. When the 5J32 was placed on the advancing side, defect-free welds were obtained under all welding conditions. However, when the 5J32 was placed on the retreating side with a rotation speed of 1500 rpm, some defects were detected below the top surface of the retreating side. Furthermore, fractographs of the defects indicated an evidence of liquation cracking during FSW. The experimental results showed that the weld formation and mechanical properties depended upon the material arrangement as well as the conventional welding parameters.

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“…The two phases most often observed in Al MnFeSi alloys are orthorhombic Al 6 (Mn,Fe) and cubic α-Al 15 (Mn,Fe) 3 Si 2 [2,7], but others like hexagonal α-Al 8 Fe 2 Si have also been reported in the literature [7]. Which one is predominant depends mainly on the silicon content [810].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Silicon Content on Recrystallization of Twin-Roll Cast Aluminum Alloys for Heat Exchangers

2012

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Thin foils of aluminum alloys are commonly used in automotive industry for manufacturing heat exchangers. Use of twin-roll casting instead of direct-chill casting requires modications in the manufacturing process and use of improved materials. In the present study, the evolution in microstructure and mechanical properties during isochronal annealing of two AW3003-based alloys diering in silicon content was monitored. The silicon inuenced both the microhardness and precipitation kinetics during annealing, but not the recrystallization temperature. Precipitation of cubic α-Al15(Mn,Fe)3Si2 phase occurred in two steps in the material with higher Si content, while mainly precipitates of Al6(Mn,Fe) phase formed in the second material in a broad temperature interval, preferentially at grain boundaries.

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Alloys with Lithium

Cited by 32 publications

References 0 publications

Microstructure Evolution in the Near-Surface Region During Homogenization of a Twin-Roll Cast AlFeMnSi Alloy

Microstructure Evolution in the Near-Surface Region During Homogenization of a Twin-Roll Cast AlFeMnSi Alloy

Effect of Welding Parameters on Weld Formation and Mechanical Properties in Dissimilar Al Alloy Joints by FSW

The Influence of Silicon Content on Recrystallization of Twin-Roll Cast Aluminum Alloys for Heat Exchangers

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