by Juan Mauricio Garcia, María González, Marcelo Roldan and Fernando Sánchez
Abstract:
The mechanical behaviour of prismatic bars extracted from a high purity alumina tube was studied comparatively in the as-received condition and after being irradiated with high-energy protons. For this study, ten samples were irradiated with 8 MeV H+ ion beams up to a fluence of 1.63 × 1016 ions/cm2. Values of compressive strength, elastic modulus, hardness, and fracture toughness were determined from compression and micro-indentation tests. After the mechanical tests, the relationship of the mechanical behaviour shown with the microstructure was considered by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). A clear trend was observed, compressive strength and elastic modulus were considerably reduced, while hardness and fracture toughness increased. This change is attributed to radiation-induced cavities and dislocation loops after high-energy ion-irradiation.
Reference:
Juan Mauricio Garcia, María González, Marcelo Roldan and Fernando Sánchez, “The microstructural in-sight to the mechanical behavior of alumina after high energy proton irradiation”, Nuclear Materials and Energy, vol. 31, pp. 101173.
Bibtex Entry:
@article{garcia_microstructural_2022,
title = {The microstructural in-sight to the mechanical behavior of alumina after high energy proton irradiation},
volume = {31},
issn = {2352-1791},
url = {https://www.sciencedirect.com/science/article/pii/S235217912200059X},
doi = {10.1016/j.nme.2022.101173},
abstract = {The mechanical behaviour of prismatic bars extracted from a high purity alumina tube was studied comparatively in the as-received condition and after being irradiated with high-energy protons. For this study, ten samples were irradiated with 8 MeV H+ ion beams up to a fluence of 1.63 × 1016 ions/cm2. Values of compressive strength, elastic modulus, hardness, and fracture toughness were determined from compression and micro-indentation tests. After the mechanical tests, the relationship of the mechanical behaviour shown with the microstructure was considered by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). A clear trend was observed, compressive strength and elastic modulus were considerably reduced, while hardness and fracture toughness increased. This change is attributed to radiation-induced cavities and dislocation loops after high-energy ion-irradiation.},
language = {en},
urldate = {2022-05-09},
journal = {Nuclear Materials and Energy},
author = {Garcia, Juan Mauricio and González, María and Roldan, Marcelo and Sánchez, Fernando},
month = jun,
year = {2022},
keywords = {Alpha alumina, Compression tests, Flow channel inserts, Fusion breeding blanket, High-energy proton irradiation, Micro-indentation},
pages = {101173},
file = {ScienceDirect Snapshot:E:\Usuarios\Administrator\Zotero\storage\CTSQWIY2\S235217912200059X.html:text/html},
}