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Processing Effects on Mechanical Behavior of High Performance Powder Metallurgy Aluminum Alloys

Published

Author(s)

N Chawla, S E. Wu, Richard J. Fields, G T. Campbell

Abstract

Prealloyed powders are very attractive in the development of high performance alloys for automotive applications. Al-Fe prealloyed powders were consolidated with pure Al powder to enhance compressibility. Different combinations of coarse and fine powders of each component were processed, and the green and sintering behavior evaluated. The highest strengths were obtained with a combination of coarse prealloyed powder mixed with finer soft powders. The effect of powder size ratio on powder packing, green and sintered density, and strength was evaluated. A model was developed to predict the green density of each of the composite powder mixtures. Relatively accurate predictions were obtained, particularly for powder mixtures with narrow powder size distributions.
Citation
Metal Powders Industries Federation Conference

Keywords

aluminum, composites, consolidation, density, intermetallics, powder, strength

Citation

Chawla, N. , Wu, S. , Fields, R. and Campbell, G. (2001), Processing Effects on Mechanical Behavior of High Performance Powder Metallurgy Aluminum Alloys, Metal Powders Industries Federation Conference (Accessed February 20, 2024)
Created December 31, 2000, Updated October 12, 2021