Microstructure and Compression Properties of Al-8Fe-2Mo-2V-1Zr Alloys Produced by Extrusion of Melt-Spun Powders

Taek Kyun Jung; T.J. Sung; Mok Soon Kim; W.Y. Kim

doi:10.4028/www.scientific.net/SSP.124-126.1521

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Microstructure and Compression Properties of Al-8Fe-2Mo-2V-1Zr Alloys Produced by Extrusion of Melt-Spun Powders

Abstract:

Bulk Al-8Fe-2Mo-2V-1Zr (wt.%) alloys were produced by melt spinning which can give rise to develope a nano crystalline structure in terms of rapid cooling and subsequent hot extrusion. The bulk alloys exhibited multi-phase microstructures consisting of ultra fine equiaxed grains with the average grain size of 100nm and a fine intermetallic Al-Fe, Al-V and Al-Zr based phase having less than 50nm in particle size. From compression test, it was revealed that the bulk alloys have very high yield strength at both room temperature (942MPa) and elevated temperatures (651MPa at 473K, 500MPa at 573K, respectively).