Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 732, Issue -, Pages 333-340Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2018.07.028
Keywords
Zr alloy; Texture; Strength; Vickers hardness; Nano-indentation
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Funding
- project The development of nuclear fuel cladding with self-healing intelligence under the Center of World Intelligence Project for Nuclear ST and Human Resource Development by Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT
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In this study, the mechanical properties in a Zr-Nb alloy plate with bimodal basal texture microstructure have been evaluated by tensile, Vickers hardness and nano-indentation tests. Based on the results, the strength hardness relationship is discussed with special attention paid to its textured microstructure. It is found that the correlation between strength and hardness varied greatly depending on whether the loading direction is parallel or perpendicular to the normal direction of the plate, demonstrating that the strength-hardness relationship is texture-dependent. In addition, the relation between strength and nano-hardness is obtained by subjecting specimens to cold rolling at various reduction rates. This allows for the evaluation of the strengthening effect using convenient and non-destructive nano-indentation tests instead of elaborate tensile tests, which may have particularly useful applications for nuclear engineering components when considering the irradiation strengthening occurred in these materials.
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