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Erschienen in: Experimental Mechanics 6/2021

12.04.2021 | Research paper

Micro-deformation Study of Stainless Steel Impacted by Ceramic Particle Using Electron Moiré Method

verfasst von: F. C. Lang, Y. M. Xing, S. T. Yang, Y. R. Zhao, J. J. Li

Erschienen in: Experimental Mechanics | Ausgabe 6/2021

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Abstract

Background

High-velocity oxy-fuel (HVOF)-sprayed metallic coating can be used to create a surface layer that plays a significant role in enhancing the overall strength, stiffness, and fatigue life of the treated material. The micro-deformation around a single impacted particle is a critical factor that must be considered for the optimization of the HVOF process.

Objective

In this study, the micro-deformation field of stainless steel impacted by a ceramic particle was characterized at the micro-scale.

Method

A grid with a frequency of 1200 lines/mm was fabricated on the surface of stainless steel specimen. The microscopic deformation field formed on the substreate surface, induced by the impact of micro-particles with a diameter of 18 µm, was determined using the electron moiré method and numerical simulations.

Results

The in-plane plastic strain around the impacted particle was found to be as high as 9.1%, and the value sharply decreased with the increase of the distance to the edge of the impacted particle. The diameter of the plastic area was about 40 µm, which was approximately 2.2 times larger than the particle size. The experimental results were compared with numerical simulation results, and good agreement between the results was found.

Conclusions

The electron moiré technique can be a useful tool for the measurement of the deformation field induced by an impacted particle in a very local area with a size on the order of microns.

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Metadaten
Titel
Micro-deformation Study of Stainless Steel Impacted by Ceramic Particle Using Electron Moiré Method
verfasst von
F. C. Lang
Y. M. Xing
S. T. Yang
Y. R. Zhao
J. J. Li
Publikationsdatum
12.04.2021
Verlag
Springer US
Erschienen in
Experimental Mechanics / Ausgabe 6/2021
Print ISSN: 0014-4851
Elektronische ISSN: 1741-2765
DOI
https://doi.org/10.1007/s11340-021-00721-w

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