Probing nanoscale damage gradients in ion-irradiated metals using spherical nanoindentation

We discuss and demonstrate the application of recently developed spherical nanoindentation stress-strain protocols in characterizing the mechanical behavior of tungsten polycrystalline samples with ion-irradiated surfaces. It is demonstrated that a simple variation of the indenter size (radius) can...

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Detalles Bibliográficos
Autores principales: Pathak, Siddhartha, Kalidindi, Surya R., Weaver, Jordan S., Wang, Yongqiang, Doerner, Russell P., Mara, Nathan A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5607315/
https://www.ncbi.nlm.nih.gov/pubmed/28931874
http://dx.doi.org/10.1038/s41598-017-12071-6
Descripción
Sumario:We discuss and demonstrate the application of recently developed spherical nanoindentation stress-strain protocols in characterizing the mechanical behavior of tungsten polycrystalline samples with ion-irradiated surfaces. It is demonstrated that a simple variation of the indenter size (radius) can provide valuable insights into heterogeneous characteristics of the radiation-induced-damage zone. We have also studied the effect of irradiation for the different grain orientations in the same sample.

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