Elastoplastic Deformation of Rotating Disk Made of Aluminum Dispersion-Hardened Alloys
نویسندگان
چکیده
This paper studies the plastic deformation of a rotating disk made aluminum dispersion-hardened alloys using mechanical tensile tests and structured study optical microscopy methods. Alloys such as AA5056 A356 with dispersed Al3Er TiB2 particles are used initial materials. Tensile strength testing obtained shows that addition in alloy composition leads to an increase its ultimate stress limit (USL) plasticity from 170 204 MPa 14.7 21%, respectively, although modifying effect is not observed during crystallization. The also simultaneous yield strength, USL, 102 145 MPa, 263 2.3 2.8%, respectively. stress-strain state was carried out framework deformed solid mechanics. equilibrium equations were integrated analytically, taking into account hardening conditions experimental investigations. it possible write analytical relations for radial circumferential stresses determine loss strength. resistance depends on ratio between outer inner radii. decreases increasing width at constant radius, which associated stronger centrifugal force field. At higher rotational rate narrow disks, tangential high can exceed USL value. A356–TiB2 more brittle than AA5056–Al3Er alloys. In case wide preferable.
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ژورنال
عنوان ژورنال: Metals
سال: 2023
ISSN: ['2075-4701']
DOI: https://doi.org/10.3390/met13061028