Improving Recrystallization Resistance in Wrought Aluminum Alloys with Scandium Addition

Riddle, Yancy W.; McIntosh, M.J.; Sanders, T. H.

doi:10.1002/9781118787922.ch3

Cited by 2 publications

(3 citation statements)

References 10 publications

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“…The shift between homogeneous and heterogeneous dominance in nucleation is dependent on the dislocation density, as indicated in the figure . The shape of continuously precipitated Al 3 Sc particles is most frequently reported to be spherical. 29,112,113,[119][120][121][122][123][124][125][126][127][128][129] However, it seems that under certain conditions, the shape can differ from the spherical one. Drits et al 130 reported both spherical and star shaped morphology.…”

Section: Continuous Precipitation Of Al 3 Scmentioning

confidence: 99%

“…In the case of cold deformation and Dispersoids can form after a direct up-quench to the annealing temperature, 115,143,148,184 during ramp-up to the annealing temperature 115 or by pre-annealing at an intermediate temperature. 129 In the case of hot deformation, the Al 3 Sc or Al 3 (Sc 12x Zr x ) dispersoids may nucleate and grow during preheating of the material and during the hot deformation itself. 184 2.…”

Section: Recrystallisation Resistancementioning

confidence: 99%

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Scandium in aluminium alloys

Røyset¹,

Ryum²

2005

International Materials Reviews

781

325

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A considerable part of the available literature on scandium in aluminium alloys is reviewed. Experimental data and assessments of the binary Al-Sc phase diagram, a wide range of ternary Al-Sc-X phase diagrams and a few higher order phase diagrams are accounted for, with emphasis on the aluminium rich part of the diagrams. The phase which is in equilibrium with Al, Al 3 Sc, can form by several different mechanisms, all of which are described. The precipitation kinetics of Al 3 Sc in binary Al-Sc alloys are discussed, and an overview of the reported influences of ternary alloying elements on the precipitation of Al 3 Sc is given. The Al 3 Sc phase particles can serve as a grain refiner in the Al melt, a dispersoid for controlling the grain structure of the alloy and a strengthening precipitate. Several examples of these three effects are mentioned, both in binary Al-Sc alloys, and in more complex alloys. The reported effects of Sc on the precipitation behaviour in Al-Cu, Al-Mg-Si, Al-Zn-Mg and Al-Li alloys are also revised. A brief account of the effects of Sc additions on the corrosion behaviour of Al and Al-alloys is given. Finally, some views on the current and future use of Sc-containing Al alloys are given.

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Section: Continuous Precipitation Of Al 3 Scmentioning

confidence: 99%

Section: Recrystallisation Resistancementioning

confidence: 99%

Scandium in aluminium alloys

Røyset¹,

Ryum²

2005

International Materials Reviews

781

325

View full text Add to dashboard Cite

show abstract

“…Fine Al 3 Sc particles are precipitated, and have the effect of preventing recrystallization. 2) When both Zr and Sc are added to pure aluminum, Al 3 Sc particles preferentially form because the Sc diffusion rate in Al is higher than the Zr diffusion rate. Al 3 (Sc 1¹x Zr x ) phase form on the surface of the Al 3 Sc particles and a core-shell structure form.…”

Section: Introductionmentioning

confidence: 99%

Effects of Sc and Zr Addition on the Mechanical Properties of 7000 Series Aluminum Alloys

Takaya¹,

Ichitani²,

Minoda³

2023

Mater. Trans.

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Scandium addition to aluminum alloys has been evaluated at various research institutions, and it is known that the Al 3 Sc precipitates effectively increase their strengths. In this study, the effect of Sc addition on the strengths of two types of 7000 series aluminum alloys was investigated. As a result, the strength increased by the Sc addition to both types of alloys, but the increased amounts were limited to 1040 MPa. It was considered that because the strengthening effect by the ©A phase was sufficiently high, the precipitation strengthening by the dispersion of Al 3 (Sc 1¹x Zr x ) particles was relatively low in these alloys.

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Improving Recrystallization Resistance in Wrought Aluminum Alloys with Scandium Addition

Cited by 2 publications

References 10 publications

Scandium in aluminium alloys

Scandium in aluminium alloys

Effects of Sc and Zr Addition on the Mechanical Properties of 7000 Series Aluminum Alloys

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