Lattice Structures of AlSc and their Effect on Interdiffusion

Juan Li; Feng Ye; Li Huang; Yong Feng Liang

doi:10.4028/www.scientific.net/MSF.747-748.9

Paper Titles

Preface and Organizers

Preparation of Multilayered Ti-Al Alloys by Solid Reaction
p.1

Lattice Structures of AlSc and their Effect on Interdiffusion
p.9

Microstructure Evolution of TiAl under Tensile Impact Loadings
p.14

The Effect of Stoichiometry and Degree of Order on Mechanical Properties of Ni₃Fe Intermetallics
p.19

Fabrication and Properties of Rapidly Quenched Fe-6.5wt.%Si Alloy Ribbons
p.25

Numerical Simulation and Process Optimization of Directional Solidification of Nb Containing High Silicon Steel
p.31

Microstructure Transformation of a Refined High Nb Containing TiAl Alloy
p.38

Effect of Al on Microstructures and Properties of Ti-45Al-8.5Nb-0.2B-0.2W Alloy
p.44

HomeMaterials Science ForumMaterials Science Forum Vols. 747-748Lattice Structures of AlSc and their Effect on...

Lattice Structures of AlSc and their Effect on Interdiffusion

Abstract:

The structures of AlSc with 50at.% and 55at.% Sc were investigated. It was shown that orthorhombic AlSc is formed at Sc 50at.%, and B2 AlSc at Sc 55at.%. After anealing above 1100 °C, the orthorhombic AlSc transited into B2 structure, which indicated that B2 AlSc can also be a metalstable phase in the alloy with Sc less than 50at.%. The effects of these two structures on the phases formation via inter-diffusion were also studied using diffusion couple with titanium and γ-TiAl. It was found that the interdiffusion coefficients are the main factors for Ti/AlSc and structures are the main factors for γ-TiAl/AlSc.

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Periodical:

Materials Science Forum (Volumes 747-748)

Pages:

9-13

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.747-748.9

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Online since:

February 2013

Authors:

Juan Li, Feng Ye, Li Huang, Yong Feng Liang

Keywords:

AlSc, B2, Diffusion Couple, Orthorhombic

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