Effects of load ratio, R, and test temperature on high cycle fatigue behavior of nano-structured Al–4Y–4Ni–X alloy composites

Nanostructured Al–4Y–4Ni–X composites created by extruding atomized amorphous powders at different extrusion ratios were tested under high cycle bending fatigue at load ratios, R=0.1, 0.33 and −1 at room temperature, 149°C and 260°C. Increasing the extrusion ratio generally improved the fatigue life...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2012-12, Vol.558, p.211-216
Main Authors: El-Shabasy, Adel B., Hassan, Hala A., Lewandowski, John J.
Format: Article
Language:English
Subjects:
Aluminum
Amorphous aluminum powders
Applied sciences
Bending fatigue
Composite materials
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Extrusion
Fatigue limit
Fully reversed fatigue tests
High cycle fatigue
Materials science
Materials synthesis
materials processing
Mechanical and acoustical properties of condensed matter
Mechanical properties of nanoscale materials
Metals. Metallurgy
Microstructure
Nanocrystalline materials
Nanoscale materials and structures: fabrication and characterization
Nanostructure
Nanostructured composite
Physics
Powder metallurgy. Composite materials
Production techniques
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Summary:Nanostructured Al–4Y–4Ni–X composites created by extruding atomized amorphous powders at different extrusion ratios were tested under high cycle bending fatigue at load ratios, R=0.1, 0.33 and −1 at room temperature, 149°C and 260°C. Increasing the extrusion ratio generally improved the fatigue life and the fatigue limits were well in excess of that obtained on conventional aluminum alloys at all temperatures tested. The fatigue limits obtained in this work were also compared to previously reported values for a nanostructured composite Al–Gd–Ni–Fe alloy produced via similar means.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2012.07.114