https://doi.org/10.1140/epjp/s13360-025-06769-0
Regular Article
Effect of crystal orientation on nanoindentation deformation behavior of AlNi alloy
1
Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, 130022, Changchun, China
2
School of Mechanical Engineering, Changchun Guanghua University, 130033, Changchun, China
3
Jilin Province Product Quality Supervision and Inspection Institute, 130023, Jilin, China
a
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Received:
6
March
2025
Accepted:
19
August
2025
Published online:
30
August
2025
Al-Ni alloy is widely used in the aerospace field. In order to further study the nanoindentation deformation mechanism of Ni–Al alloy, the [001] and [111] crystal phase models of single crystal Ni–Al alloy were established, and the mechanical behavior was systematically analyzed by molecular dynamics simulation method. The hardness data of the material were obtained by comparing the indenter load–displacement curves of the two models. Combined with atomic-scale microstructure analysis, it was found that the single crystal nickel-aluminum alloy [001] phase exhibited higher hardness and larger stacking height. In contrast, the [111] crystal phase produces more dislocation loops during the deformation process, and the stacking width is larger, forming a complex cross-linked network structure. This structure promotes the occurrence of dislocation slip, thereby reducing the overall hardness of the material. The influence of different crystal phases on the mechanical properties of nickel-aluminum alloy is revealed from the microscopic mechanism, which provides an important theoretical basis for optimizing the performance design and engineering application of nickel-aluminum alloy materials.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
