Probing nanoscale damage gradients in ion-irradiated metals using spherical nanoindentation.
作者信息
Pathak Siddhartha, Kalidindi Surya R, Weaver Jordan S, Wang Yongqiang, Doerner Russell P, Mara Nathan A
机构信息
Chemical and Materials Engineering, University of Nevada, Reno, NV, 89557, USA.
George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia, GA, 30332, USA.
出版信息
Sci Rep. 2017 Sep 20;7(1):11918. doi: 10.1038/s41598-017-12071-6.
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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