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dc.contributor.advisorFox, A.G.
dc.contributor.authorMohr, Thomas Campion
dc.date.accessioned2013-01-23T22:05:53Z
dc.date.available2013-01-23T22:05:53Z
dc.date.issued1991-09
dc.identifier.urihttp://hdl.handle.net/10945/26797
dc.descriptionApproved for public release: Distribution is unlimiteden_US
dc.description.abstractThe microstructural basis for strength of the water-quenched and aircooled HSLA-100, HSLA-100 with increased copper, and a ULCB steel was investigated by conducting an inclusion study and characterizing the microstructure of each of the steels. For the inclusion study, the SEM was used to examine a large number of fields and determine inclusion morphology while the EDX was used to determine inclusion composition. The microstructure of both the water-quenched and air-cooled steels was characterized using the optical microscope, SEM, and TEM. The HSLA-100 with increased copper steel was adequately calcium treated and aluminum deoxidized as evidenced by the low sulfur content, few MnS stringers, and lack of large oxide arrays. The ULCB steel was not calcium treated or Al-killed; nor was it thermo-mechanically processed as shown by the lack of lipped, broken, or elongated stringers. Both MnS and oxide inclusions were present, and consequently, ladle metallurgy would have to be used before the ULCB steel was hot-worked.en_US
dc.description.urihttp://archive.org/details/studyofmicrostru00mohr
dc.format.extent83 p.;28 cm.en_US
dc.language.isoen_US
dc.publisherMonterey, California. Naval Postgraduate Schoolen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. As such, it is in the public domain, and under the provisions of Title 17, United States Code, Section 105, may not be copyrighted.en_US
dc.titleA study of the microstructural basis for the strength and toughness properties of water-quenched and air-cooled HSLA-100, HSLA-100 with increased copper, and a ULCB steel.en_US
dc.typeThesisen_US
dc.contributor.corporateNaval Postgraduate School
dc.contributor.schoolNaval Postgraduate School
dc.contributor.departmentMechanical Engineering
dc.subject.authorHSLAen_US
dc.subject.authorULCBen_US
dc.subject.authornon-metallic inclusionsen_US
dc.description.serviceLieutenant, United States Navyen_US
etd.thesisdegree.nameM.S. in Mechanical Engineeringen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineMechanical Engineeringen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US


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