Effect of Ion Irradiation on Nanoindentation Fracture and Deformation in Silicon Carbide.

ABSTRACT: Silicon carbide is desirable for many nuclear applications, making it necessary to understand how it deforms after irradiation. Ion implantation combined with nanoindentation is commonly used to measure radiation-induced changes to mechanical properties; hardness and modulus can be calculated from load-displacement curves, and fracture toughness can be estimated from surface crack lengths. Further insight into indentation deformation and fracture is required to understand the observed changes to mechanical properties caused by irradiation. This paper investigates indentation deformation using high-resolution electron backscatter diffraction (HR-EBSD) and Raman spectroscopy. Significant differences exist after irradiation: fracture is suppressed by swelling-induced compressive residual stre

SUBMITTER: Leide AJ 

PROVIDER: S-EPMC8549939 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature