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dc.contributor.authorStrnadel, Bohumír
dc.contributor.authorHaušild, Petr
dc.identifier.citationMaterials Science and Engineering. A, Structural materials : properties, microstructure and processing. 2008, vol. 486, issues 1-2, p. 208-214.en
dc.description.abstractThe effect of microstructure on the fracture characteristics of high carbon hypo eutectoid steel was studied under conditions of quasistatic and dynamic loading. Experimentally determined sets of fracture toughness and Charpy impact energy values were statistically treated. A relationship was found between fracture toughness and Charpy impact energy. In the very brittle domain, the fracture toughness increases slightly with increasing Charpy impact energy. In the domain where the fracture toughness is higher, the rise in fracture toughness with increasing Charpy impact energy is more pronounced. Detailed SEM examination of fractured compact tension (CT) and Charpy V-notch (CVN) specimens showed that the fracture at ambient temperature occurred almost exclusively by cleavage. There were no visible differences in the morphology of cleavage facets on the fracture surfaces of Charpy and CT specimens. Mechanisms of cleavage initiation were revealed by the fractographical investigation of fracture surfaces. Whereas the fracture surfaces of broken CT specimens exhibit a number of cleavage origins, the fracture surfaces of CVN specimens usually show only one.en
dc.relation.ispartofseriesMaterials Science and Engineering. A, Structural materials : properties, microstructure and processingen
dc.subjecthypo eutectoid steelen
dc.subjectfracture toughnessen
dc.subjectcharpy impact energyen
dc.subjectductile tearingen
dc.subjectMiller–Smith mechanismen
dc.subjectGriffith type defecten
dc.titleStatistical scatter in the fracture toughness and Charpy impact energy of pearlitic steelen
dc.identifier.locationNení ve fondu ÚKen

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