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Physics of Metals and Metallography

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01.06.2024 | STRENGTH AND PLASTICITY

Calculation of the Yield Strength of Polycrystalline Materials with a Hexagonal Close-Packed Lattice at a Given Texture

verfasst von: A. G. Kesarev

Erschienen in: Physics of Metals and Metallography | Ausgabe 6/2024

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Abstract

For a polycrystalline material with a hexagonal close-packed lattice, a model is proposed that allows estimating the yield strength at a given texture. The plasticity properties of an individual grain are described by the generalized von Mises criterion. The most widespread averaging approaches are considered to determine the yield strength of a polycrystal. An original averaging method for a heterogeneous medium under plastic deformation conditions is proposed that takes into account the presence of undeformed grains whose share is determined by means of the percolation theory. Using each approach, the problem about tension/compression of a homogeneous rod of square cross-section is solved for two limiting cases: no texture and rigid basis texture. The calculation results are juxtaposed with the available literature data. The effect of the texture on the yield strength is considered. A qualitative explanation of generating a texture is given.

Vorheriger Artikel Effect of Thermal-Kinetic Conditions of Austenite Transformation on the Structural-Phase State of Low-Carbon Steel Sheets

Nächster Artikel Microstructure of Fracture Surfaces after Radial Compression of Annular Specimens Made of Cladding Austenitic Steel Exposed to Damaging Dose above 100 dpa

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Titel: Calculation of the Yield Strength of Polycrystalline Materials with a Hexagonal Close-Packed Lattice at a Given Texture
verfasst von: A. G. Kesarev
Publikationsdatum: 01.06.2024
Verlag: Pleiades Publishing
Erschienen in: Physics of Metals and Metallography / Ausgabe 6/2024
Print ISSN: 0031-918X
Elektronische ISSN: 1555-6190
DOI: https://doi.org/10.1134/S0031918X24600386

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Structural–Phase Transformations and Crystallographic Texture in Commercial Ti–6Al–4V Alloy with Globular Morphology of α-Phase Grains: The Rolling Plane

Electrophysical Properties of Stainless Chromium–Nickel Steel at High Pressures and Temperatures at Stepwise Shock Compression

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