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The von Mises and Hill yield criteria are commonly used when the stress-strain
state of parts under complex loading conditions is calculated. However, those yield criteria are
not suitable in some materials and do not reliably describe the inelastic behavior of the
material under complex stress conditions. The development of a simple and accurate criterion
of plastic flow is relevant. This paper presents the results of the yield criterion development
for a single crystal nickel-based superalloy (ZhS32) based on the systematization of
experimental data. Various types of stress state were realized during the experiment: tension,
compression, torsion, as well as combinations of tension-torsion, compression-torsion.
Keywords: single-crystal, crystallographic orientation, anisotropy, stress-strain state, plasticity, yield strength, ultimate strength, complex stress test |
full paper (pdf, 1456 Kb)