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dc.contributor.authorHays, Richard A.en_US
dc.date.accessioned2017-11-09T21:09:13Z
dc.date.available2017-11-09T21:09:13Z
dc.date.issued1988en_US
dc.identifier.urihttp://hdl.handle.net/10919/80148
dc.description.abstractA series of experiments was performed in an attempt to measure the effects of surface residual stresses on the stress corrosion cracking/hydrogen embrittlement (SCC/HE) behavior of AISI 4340 steel. Stress corrosion tests were performed under load control on cylindrical and notched tensile specimens in acidified 3.5% NaCl solution. The electrochemical potential of the specimens was maintained at -0.7 V versus a saturated calomel reference electrode. Time to failure for specimens tested at various applied and residual stress levels was measured. Stress relieved specimens as well as specimens containing mechanically induced residual stresses were tested. Residual stresses were estimated using Neuber's rule and were measured using an x-ray diffraction technique. In all cases, the sum of the applied and residual stresses was greater than zero. Test results showed the initiation of SCC/HE cracks to be insensitive to the effects of surface residual stresses under the conditions evaluated. This is probably a result of the total time to failure criterion used to evaluate the SCC/HE tests. The extremely aggressive environment used in these experiments apparently led to rapid crack initiation, even in specimens containing compressive residual stresses. Another possible explanation of the insensitivity of this series of tests is crack initiation in the interior of the specimens below the depth of the mechanically induced residual stresses.en
dc.format.extentxii, 89 leavesen_US
dc.format.mimetypeapplication/pdfen_US
dc.language.isoen_USen_US
dc.publisherVirginia Polytechnic Institute and State Universityen_US
dc.rightsThe authors of the theses and dissertations are the copyright owners. Virginia Techs Digital Library and Archives has their permission to store and provide access to these works.en_US
dc.subject.lccLD5655.V855 1988.H397en_US
dc.subject.lcshSteel alloys -- Stress corrosionen_US
dc.subject.lcshSteel alloys -- Hydrogen embrittlementen_US
dc.subject.lcshResidual stressesen_US
dc.titleSurface residual stress effects on stress corrosion cracking/hydrogen embrittlement behavior of AISI 4340 steelen_US
dc.typeThesisen_US
dc.contributor.departmentMaterials Engineeringen_US
dc.description.degreeMaster of Scienceen_US
dc.identifier.oclc19758818en_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineMaterials Engineeringen_US
dc.type.dcmitypeTexten_US


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