{"id":{"repo_id":"uwo","oai_identifier":"oai:uwo.scholaris.ca:20.500.14721/32841"},"canonical_url":"https://search.dev.ndltd.org/etd/uwo/oai:uwo.scholaris.ca:20.500.14721/32841","repository":{"repo_id":"uwo","name":"Western University","base_url":"https://uwo.scholaris.ca/server/oai/request"},"display":{"title":"Effect of ion irradiation on the rate dependence of plastic deformation of extruded Zr-2.5%Nb","abstract":"The purpose of this thesis is to examine the properties of Zr-2.5%Nb pressure tube material in the transverse direction. Through testing at room temperature, material properties such as the strain hardening, strain rate sensitivity and apparent activation volume were investigated. The effects of Zr+ ion-implantation occurring at 300°C, simulating irradiation-induced damage, and the strain rate of loading on these properties were also investigated. Two methods of testing were performed: in-situ micro-pillar compressions and nanoindentation testing. Ion-implantation was observed to increase material strength and hardness. However, certain implanted micro-pillars displayed early localized failure that reduced strength. This finding warrants further investigation, particularly as irradiation occurs at high temperatures in reactor conditions. Displacement rate change tests yielded an increase in stress with increased displacement rate, while tests performed at constant indenter displacement rates provided mixed results on the effect of strain rate.","abstract_html":"The purpose of this thesis is to examine the properties of Zr-2.5%Nb pressure tube material in the transverse direction. Through testing at room temperature, material properties such as the strain hardening, strain rate sensitivity and apparent activation volume were investigated. The effects of Zr+ ion-implantation occurring at 300°C, simulating irradiation-induced damage, and the strain rate of loading on these properties were also investigated. Two methods of testing were performed: in-situ micro-pillar compressions and nanoindentation testing. Ion-implantation was observed to increase material strength and hardness. However, certain implanted micro-pillars displayed early localized failure that reduced strength. This finding warrants further investigation, particularly as irradiation occurs at high temperatures in reactor conditions. Displacement rate change tests yielded an increase in stress with increased displacement rate, while tests performed at constant indenter displacement rates provided mixed results on the effect of strain rate.","abstract_has_math":false,"creators":["Mazurkiewicz, Konrad P"],"institution":"The University of Western Ontario","degree_name":"M Eng Sci","degree_level":null,"degree_discipline":"Mechanical and Materials Engineering","degree_department":null,"school":null,"contributors":[],"advisors":["Klassen, Robert J.","St. Lawrence, Sterling"],"committee_chairs":[],"committee_members":[],"year":2023,"date_issued":"2023-03-02","date_published":"2023-03-02","updated_at":"2026-07-27T21:56:20Z","subjects":["Micro-pillar compression testing","nanoindentation","strain rate change","Zr+ ion implantation","Zr-2.5%Nb","CANDU pressure tube"],"languages":["en_ca"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/20.500.14721/32841","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Klassen, Robert J.","St. Lawrence, Sterling"]},{"key":"dc:creator","label":"Author","values":["Mazurkiewicz, Konrad P"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2025-07-10T19:37:28Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2025-07-10T19:37:28Z"]},{"key":"dc:date.issued","label":"Date","values":["2023-03-02"]},{"key":"dc:publisher","label":"Institution","values":["The University of Western Ontario"]},{"key":"dc:type","label":"Dc Type","values":["thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Mechanical and Materials Engineering"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M Eng Sci"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Micro-pillar compression testing","nanoindentation","strain rate change","Zr+ ion implantation","Zr-2.5%Nb","CANDU pressure tube"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en_ca"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/20.500.14721/32841"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The thesis cover page in the PDF document includes references to Western University’s previous institutional repository platform, known as Scholarship@Western, and links to that platform (beginning with ir.lib.uwo.ca). In citing or referring to this thesis, use the DOI or handle from this page instead. Sample citation: Author name, \"Thesis title.\" (Year). Western University Open Repository. https://doi.org/10.71858/123456."]},{"key":"dc:description.abstract","label":"Abstract","values":["The purpose of this thesis is to examine the properties of Zr-2.5%Nb pressure tube material in the transverse direction. Through testing at room temperature, material properties such as the strain hardening, strain rate sensitivity and apparent activation volume were investigated. The effects of Zr+ ion-implantation occurring at 300°C, simulating irradiation-induced damage, and the strain rate of loading on these properties were also investigated. Two methods of testing were performed: in-situ micro-pillar compressions and nanoindentation testing. Ion-implantation was observed to increase material strength and hardness. However, certain implanted micro-pillars displayed early localized failure that reduced strength. This finding warrants further investigation, particularly as irradiation occurs at high temperatures in reactor conditions. Displacement rate change tests yielded an increase in stress with increased displacement rate, while tests performed at constant indenter displacement rates provided mixed results on the effect of strain rate."]},{"key":"dc:title","label":"Title","values":["Effect of ion irradiation on the rate dependence of plastic deformation of extruded Zr-2.5%Nb"]}]}],"canonical_facts":{"dc:contributor.advisor":["Klassen, Robert J.","St. Lawrence, Sterling"],"dc:creator":["Mazurkiewicz, Konrad P"],"dc:date.accessioned":["2025-07-10T19:37:28Z"],"dc:date.available":["2025-07-10T19:37:28Z"],"dc:date.issued":["2023-03-02"],"dc:description":["The thesis cover page in the PDF document includes references to Western University’s previous institutional repository platform, known as Scholarship@Western, and links to that platform (beginning with ir.lib.uwo.ca). In citing or referring to this thesis, use the DOI or handle from this page instead. Sample citation: Author name, \"Thesis title.\" (Year). Western University Open Repository. https://doi.org/10.71858/123456."],"dc:description.abstract":["The purpose of this thesis is to examine the properties of Zr-2.5%Nb pressure tube material in the transverse direction. Through testing at room temperature, material properties such as the strain hardening, strain rate sensitivity and apparent activation volume were investigated. The effects of Zr+ ion-implantation occurring at 300°C, simulating irradiation-induced damage, and the strain rate of loading on these properties were also investigated. Two methods of testing were performed: in-situ micro-pillar compressions and nanoindentation testing. Ion-implantation was observed to increase material strength and hardness. However, certain implanted micro-pillars displayed early localized failure that reduced strength. This finding warrants further investigation, particularly as irradiation occurs at high temperatures in reactor conditions. Displacement rate change tests yielded an increase in stress with increased displacement rate, while tests performed at constant indenter displacement rates provided mixed results on the effect of strain rate."],"dc:identifier.uri":["https://hdl.handle.net/20.500.14721/32841"],"dc:language.iso":["en_ca"],"dc:publisher":["The University of Western Ontario"],"dc:subject":["Micro-pillar compression testing","nanoindentation","strain rate change","Zr+ ion implantation","Zr-2.5%Nb","CANDU pressure tube"],"dc:title":["Effect of ion irradiation on the rate dependence of plastic deformation of extruded Zr-2.5%Nb"],"dc:type":["thesis"],"thesis:degree_discipline":["Mechanical and Materials Engineering"],"thesis:degree_name":["M Eng Sci"]},"updated_at":"2026-07-27T21:56:20Z"}