The hardness and modulus of molybdenum silicide/niobium microlaminates and stressed materials determined by nanoindentation

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dc.contributor.advisorPharr, George M.en_US
dc.creatorTsui, Ting Yiuen_US
dc.date.accessioned2009-06-04T00:00:39Zen_US
dc.date.available2009-06-04T00:00:39Zen_US
dc.date.issued1992en_US
dc.description.abstractNanoindentation techniques have been used to explore the hardness and elastic modulus of Nb/MoSi$\sb2$ microlaminates and stressed aluminium and stainless steel alloys. The elastic moduli of the microlaminates fall on the high end of range set by the rule-of-mixtures and increase slightly above it at small wavelengths. The hardness of the microlaminates increases with decreasing wavelength in a manner consistent with Hall-Petch strengthening. It is shown that average mechanical properties of the microlaminates can be measured when the plastic penetration depths are as small as one bilayer thickness. Studies in the aluminium alloy and stainless steel show that while hardness is affected by applied stress, the standard methods by which hardness and modulus are determined from nanoindentation data may lead to inaccuracies when large stresses exist in the material.en_US
dc.format.extent116 p.en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.callnoThesis M.E. 1992 Tsuien_US
dc.identifier.citationTsui, Ting Yiu. "The hardness and modulus of molybdenum silicide/niobium microlaminates and stressed materials determined by nanoindentation." (1992) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/13646">https://hdl.handle.net/1911/13646</a>.en_US
dc.identifier.urihttps://hdl.handle.net/1911/13646en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.subjectEngineeringen_US
dc.subjectMaterials scienceen_US
dc.titleThe hardness and modulus of molybdenum silicide/niobium microlaminates and stressed materials determined by nanoindentationen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentMechanical Engineeringen_US
thesis.degree.disciplineEngineeringen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Scienceen_US
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