Effect of Initial Grain Size on Microstructure and Mechanical Properties of In Situ Hybrid Aluminium Nanocomposites Fabricated by Friction Stir Processing
نویسندگان
چکیده
Friction stir processing (FSP) offers a unique opportunity to tailor the microstructure and improve mechanical properties due combination of extensive strains, high temperatures, high-strain rates inherent process. Reactive friction was carried out in order produce situ Al/(Al13Fe4 + Al2O3) hybrid nanocomposites on wrought/as-annealed (673 K) AA1050 substrate. The active mixture pre-ball milled Fe2O3 Al powder introduced into zone by pre-placing it Microstructural characterisation showed that Al13Fe4 Al2O3 formed as reaction products matrix dynamically restored aluminium matrix. means grain size found decrease markedly 3.4 2 μm from ~55 40–50 after FSP using wrought as-annealed substrates employing electron backscattered diffraction detectors, respectively. In addition, tensile testing results were indicative fabricated surface nanocomposite substrate offered greater ultimate strength (~160 MPa) hardness (73 HV) than those (146 MPa, 60
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ژورنال
عنوان ژورنال: Applied sciences
سال: 2023
ISSN: ['2076-3417']
DOI: https://doi.org/10.3390/app13127337