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Tribology Letters
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01-03-2025 | Original Paper

Size Effect on the Spherical Scratch Response in Single Crystalline Copper

Authors: Jinxuan Zhu, Tao He

Published in: Tribology Letters | Issue 1/2025

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Abstract

The study investigates the size effect on spherical scratch responses in single crystalline copper, a critical area in materials science and engineering. Using mechanism-based strain gradient crystal plasticity simulations, the authors explore how the size of spherical indenters affects scratch hardness. They validate their models with experimental data, demonstrating a significant size effect: smaller indenters result in higher scratch hardness. The underlying mechanisms are attributed to the evolution of geometrically necessary dislocations (GND) and statistically stored dislocations (SSD). This research offers valuable insights into understanding the deformation behavior of metals at micro and nano scales, essential for applications ranging from micro-electromechanical systems to space robotics.
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Metadata
Title
Size Effect on the Spherical Scratch Response in Single Crystalline Copper
Authors
Jinxuan Zhu
Tao He
Publication date
01-03-2025
Publisher
Springer US
Published in
Tribology Letters / Issue 1/2025
Print ISSN: 1023-8883
Electronic ISSN: 1573-2711
DOI
https://doi.org/10.1007/s11249-024-01954-1

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