Development of crystallographic-orientation-dependent internal strains around a fatigue-crack tip during overloading and underloading

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dc.contributor.authorLee, SYen_AU
dc.contributor.authorHuang, EWen_AU
dc.contributor.authorWu, Wen_AU
dc.contributor.authorLiaw, PKen_AU
dc.contributor.authorParadowska, AMen_AU
dc.date.accessioned2014-06-23T04:38:13Zen_AU
dc.date.available2014-06-23T04:38:13Zen_AU
dc.date.issued2013-05-01en_AU
dc.date.statistics2014-06-23en_AU
dc.description.abstractIn-situ neutron diffraction was employed to directly measure the crystallographic-orientation-dependent (i.e. hkl) internal strains as a function of distance from the crack tip on the pre-cracked Hastelloy C-2000 compact-tension specimen. Both in-plane (IP) and through-thickness (TT) strain evolutions for various grain orientations were examined during tensile overloading and compressive underloading cycles. After overloading, underloading and their combination loadings were applied and unloaded, the significantly different {hkl} residual strain profiles were obtained in the vicinity of the crack tip. The load responses of the {200} grain orientation in both the IP and TT directions were more significant than those of any other orientations. It is suggested that the different orientation-dependent strain distributions around the crack tip are caused by the combined effects of elastic and plastic anisotropy of each {hkl} reflection upon loading and the subsequent development of residual stresses generated near the crack tip during unloading as a result of the plastic deformation. © 2013, Elsevier Ltd.en_AU
dc.identifier.citationLee, S. Y., Huang, E.-W., Wu, W., Liaw, P. K., & Paradowska, A. M. (2013). Development of crystallographic-orientation-dependent internal strains around a fatigue-crack tip during overloading and underloading. Materials Characterization, 79, 7-14. doi:10.1016/j.matchar.2013.02.008en_AU
dc.identifier.govdoc5063en_AU
dc.identifier.issn1044-5803en_AU
dc.identifier.journaltitleMaterials Characterizationen_AU
dc.identifier.pagination41821en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.matchar.2013.02.008en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/5708en_AU
dc.identifier.volume79en_AU
dc.language.isoenen_AU
dc.publisherElsevier Science Incen_AU
dc.subjectFatigueen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectCrack propagationen_AU
dc.subjectNeutronsen_AU
dc.subjectPlasticityen_AU
dc.subjectDiffractionen_AU
dc.titleDevelopment of crystallographic-orientation-dependent internal strains around a fatigue-crack tip during overloading and underloadingen_AU
dc.typeJournal Articleen_AU
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