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

ABSTRACT: 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.

SUBMITTER: Pathak S

PROVIDER: S-EPMC5607315 | biostudies-other | 2017 Sep

REPOSITORIES: biostudies-other

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

Pathak Siddhartha S Kalidindi Surya R SR Weaver Jordan S JS Wang Yongqiang Y Doerner Russell P RP Mara Nathan A NA

Scientific reports 20170920 1

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 sampl ...[more]

PMID: 28931874

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