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Microstructure and mechanical properties of RSP/M Al-Fe-V-Si and Al-Fe-Ce alloys

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Abstract

Two aluminium alloys with nominal compositions of Al-8Fe-4Ce and Al-8Fe-1V-2Si (all compositions in wt %) were rapidly solidified by ultrasonic gas atomization. The atomized powders with an average particle size (d50) of 30 μm were vacuum hot pressed and subsequently hot extruded. The P/M extrusion exhibited similar microstructure and elevated temperature tensile properties. The tensile and stress rupture samples of both the alloys exhibited ductile dimple failure. However, the Al-Fe-V-Si extrusion samples exhibited significantly better creep and stress rupture properties. The Al-Fe-Ce alloy was found to be more susceptible to cavitation at elevated temperatures which resulted in poor stress rupture properties.

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Authors and Affiliations

  1. Defence Metallurgical Research Laboratory, Kanchanbagh, Hyderabad, 500058, India

    U. Prakash, T. Raghu, A. A. Gokhale & S. V. Kamat

Authors
  1. U. Prakash
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  2. T. Raghu
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  3. A. A. Gokhale
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  4. S. V. Kamat
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Prakash, U., Raghu, T., Gokhale, A.A. et al. Microstructure and mechanical properties of RSP/M Al-Fe-V-Si and Al-Fe-Ce alloys. Journal of Materials Science 34, 5061–5065 (1999). https://doi.org/10.1023/A:1004700830936

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  • DOI: https://doi.org/10.1023/A:1004700830936

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