Milling and Consolidation by Hot Rolling of Al-Fe-Cr Alloy

C.A.D. Rodrigues; G. Tremiliosi-Filho; J.M.D.A. Rollo; Alain Reza Yavari; Claudio Shyinti Kiminami; Walter José Botta Filho

doi:10.4028/www.scientific.net/MSF.591-593.258

Paper Titles

Troubleshooting and Preventive Maintenance of Furnace Atmospheres
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The Use of PM Ferritic Matrix for the Processing of Diamond Cutting Tools
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Processing and Mechanical Properties of PM Processed Fe-Cu-Co Alloys
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Mechanical Properties of Two MIM Processed Nickel-Based Superalloys
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Milling and Consolidation by Hot Rolling of Al-Fe-Cr Alloy
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Study of the System Mo-Fe-B for Wear-Resistant Materials
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Sintered High Carbon Steels: Effect of Thermomechanical Treatments on their Mechanical and Wear Performance
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Porous Structure and Mechanical Properties of the Cellular Metallic Materials Fabricated by Sintering Al Powder Coated with Sn
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Effect of High Energy Milling Parameters on Nanostructured Cr₃C₂-Ni20Cr Powder Characteristics
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Milling and Consolidation by Hot Rolling of Al-Fe-Cr Alloy

Abstract:

This paper discusses the preparation of partially amorphous Al90Fe5Cr5 and Al90Fe7Cr3 powder alloys by mechanical milling and their subsequent consolidation by hot milling. Samples milled for 60 hours showed a microstructure composed of amorphous phase and nanocrystalline Al. The heat treatment of these powders resulted in the equilibrium phases: fcc-Al + (Al3Fe and Al5Cr intermetallic phases). Hot rolling these powders at 430°C resulted in consolidated samples with a fine microstructure composed of Al, Al3Fe and Al5Cr intermetallic phases and high porosity. The high hardness values of about 417HV of the intermetallic compounds formed during the rolling process presented the main obstacle to obtaining totally homogenous and consolidated samples.