Consolidation of partially amorphous aluminium-alloy powders by severe plastic deformation

被引：44
|
作者：
Botta, WJ
Fogagnolo, JB
Rodrigues, CAD
Kiminami, CS
Bolfarini, C
Yavari, AR
机构：
[1] Univ Fed Sao Carlos, Dept Mat Engn, BR-13565905 Sao Carlos, SP, Brazil
[2] Inst Natl Polytech Grenoble, CNRS, LTPCM, UMR 5614, F-38402 St Martin Dheres, France
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2004年 / 375卷
基金：
巴西圣保罗研究基金会;
关键词：
aluminium alloys; composite alloys; severe plastic deformation;
D O I：
10.1016/j.msea.2003.10.072
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
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.
引用
收藏
页码：936 / 941
页数：6
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