Material toughness analysis of direct metal laser sintered 15-5PH stainless steel

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dc.contributor.authorParashin, Sara L.
dc.contributor.examiningcommitteeChen, Ying (Biosystems Engineering) Caley, William (Mechanical Engineering)en_US
dc.contributor.supervisorMorrison, Jason (Biosystems Engineering)en_US
dc.date.accessioned2018-01-10T15:48:53Z
dc.date.available2018-01-10T15:48:53Z
dc.date.issued2017
dc.degree.disciplineBiosystems Engineeringen_US
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.abstractThis thesis tests and compares the material toughness and material properties of 15-5PH stainless steel manufactured by direct metal laser sintering (DMLS) and conventionally using rolled steel. Effects from precipitation hardening heat treatment on the material toughness, material properties, and deformation were also analyzed. The test methods applied included Charpy impact testing, particle analysis, density measurement, specimen dimension measurements, fracture surface analysis, microstructure analysis, and elemental analysis. The results showed that DMLS has significantly lower material toughness and density than rolled steel. However density was concluded to not be a contributing factor of lower material toughness, but rather the nature of the DMLS process implementing a form of heat treatment. Precipitation hardening showed a decrease in material toughness in both methods of manufacturing, as a result of material hardening. Significant deformation by contraction was found in both forms of manufacturing as a result of precipitation hardening.en_US
dc.description.noteFebruary 2018en_US
dc.identifier.urihttp://hdl.handle.net/1993/32767
dc.language.isoengen_US
dc.rightsopen accessen_US
dc.subjectDirect metal laser sinteringen_US
dc.subject15-5PH stainless steelen_US
dc.subjectMaterial toughnessen_US
dc.subjectPrecipitation hardeningen_US
dc.subjectMaterials engineeringen_US
dc.subjectManufacturingen_US
dc.subjectAdditive manufacturingen_US
dc.titleMaterial toughness analysis of direct metal laser sintered 15-5PH stainless steelen_US
dc.typemaster thesisen_US
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