Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 375, Issue -, Pages 936-941Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2003.10.072
Keywords
aluminium alloys; composite alloys; severe plastic deformation
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The microstructures and properties of Al-based alloys produced by severe plastic deformation under high pressure torsion straining were compared with alloys of the same compositions consolidated by hot extrusion and spray-forming processing. Partially amorphous alloy powders of two systems were studied; Al(90)Fe(7)Z(3) alloy powders were prepared by high-energy ball milling and Al84Y3Ni8Co4Zr1 + SiC composite powder was prepared by gas atomisation. The alloy powders have been cold consolidated by high-pressure torsion straining under a stress of 5 GPa resulting in refined and uniform microstructures, with hardness values well above the measured values for the hot-extruded Al(90)Fe(7)Z(3) alloy and for the spray-deposited Al84Y3Ni8Co4Zr1 + SiC composite alloy. (C) 2003 Published by Elsevier B.V.
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