A dislocation-based yield strength model for nano-indentation size effect
نویسندگان
چکیده
This paper presents a dislocation-based yield strength model for the nano-indentation size effect. The is based on functional expressions involving densities of statistically stored dislocations and geometrically necessary dislocations. A single-phase austenitic stainless steel (316L) ferrite-austenite dual-phase (2205) are used here as case-study materials to validate proposed model. Experimental testing finite element modelling two presented. tests performed in indentation load range from 1000[Formula: see text] 10000[Formula: text]. For 2205 steel, using microstructure-based It shown that, with consideration dislocations, results can reproduce measured load–displacement curves hence, effect, within an error about 5%.
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ژورنال
عنوان ژورنال: Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications
سال: 2021
ISSN: ['1464-4207', '2041-3076']
DOI: https://doi.org/10.1177/1464420721992796