Analysis and constitutive modeling of dynamic impact behaviour of Haynes 282 superalloy

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dc.contributor.authorUgodilinwa, Nnaemeka
dc.contributor.examiningcommitteeZhu, Guozhen (Mechanical Engineering) Cha, Young-Jin (Civil Engineering)en_US
dc.contributor.supervisorOjo, Olanrewaju (Mechanical Engineering) Khoshdarregi, Mohammad (Mechanical Engineering)en_US
dc.date.accessioned2018-09-20T18:15:05Z
dc.date.available2018-09-20T18:15:05Z
dc.date.issued2018-09-11en_US
dc.date.submitted2018-09-11T18:39:09Zen
dc.degree.disciplineMechanical Engineeringen_US
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.abstractHaynes 282 is a nickel-based superalloy used in the static and rotating components of aerospace engines. Several studies have reported on its mechanical properties; however, little information is available on its impact behaviour which is critical in determining its resistance to damage under high strain rate loading. This study investigates the dynamic impact behaviour of Haynes 282 at strain rates of up to 9 x 103 s-1 and temperatures from 25oC to 800oC. The experimental results show that the flow stress of Haynes 282 is less sensitive to strain rate, a remarkable feature that could ease the machinability of this new alloy. Haynes 282 is more susceptible to impact failure after ageing due to its higher strength and lower strain hardening capability that predisposes it to the formation of adiabatic shear bands. Furthermore, an Arrhenius-type constitutive model is used to predict the dynamic impact behaviour of Haynes 282.en_US
dc.description.noteFebruary 2019en_US
dc.identifier.urihttp://hdl.handle.net/1993/33454
dc.language.isoengen_US
dc.rightsopen accessen_US
dc.subjectHaynes 282en_US
dc.subjectHigh Strain Rateen_US
dc.subjectAdiabatic Shear Banden_US
dc.subjectConstitutive Modelen_US
dc.subjectSuperalloyen_US
dc.titleAnalysis and constitutive modeling of dynamic impact behaviour of Haynes 282 superalloyen_US
dc.typemaster thesisen_US
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