Mechanical characterization of high volume fraction Al7075-Al2O3 composite fabricated by semisolid powder processing

نویسندگان

چکیده

Abstract The mechanical properties and physical characteristics of aluminum alloy composites can be significantly improved by adding reinforcing phases. However, the high loading reinforcement phase in Al7075-Al 2 O 3 has not been thoroughly studied. In this work, a combination semisolid metal powder processing metallurgy is used to process manufacture with fraction > 40 vol.%. effects parameters on microstructures composite material are discussed detail. limits volume Al Al7075 identified linked parameters. A methodology introduced estimate consolidation temperature using compaction testing. particles (the average particle size 120 µm) were mechanically milled 20 for 10 min 5 h high-energy planetary ball mill. mixture was then compacted state at 615 °C under pressures 50 MPa 100 MPa. By increasing milling time from h, deformation powders fracture occur, restricting limit reinforcement. also shows dominant effect morphology, microstructure, composites. Increasing pressure compressive strength 218 652 vol.% exhibits highest hardness 198.2 HV 96.9% relative density when it min. 60 vol.%, hardness, density, decreased. appeared overloaded. Results show that huge potential fabrication matrix near theoretical density.

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ژورنال

عنوان ژورنال: The International Journal of Advanced Manufacturing Technology

سال: 2023

ISSN: ['1433-3015', '0268-3768']

DOI: https://doi.org/10.1007/s00170-023-10881-9