Microstructural and property assessment of creep aged 12cr steel after welding

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dc.contributor.advisorSonderegger, Ben_ZA
dc.contributor.advisorKnutsen, Robert Den_ZA
dc.contributor.authorMolokwane, Teboho Jacoben_ZA
dc.date.accessioned2014-10-21T13:38:20Z
dc.date.available2014-10-21T13:38:20Z
dc.date.issued2013en_ZA
dc.descriptionIncludes bibliographical references.en_ZA
dc.description.abstractThe electricity public utility of Eskom (South Africa) has an ageing fleet of power generation equipment and due to shortage of capacity there is limited time for maintenance and replacements. Complete main steam pipework replacements are not practical and in many instances selective welding must be done on creep aged and sometimes creep damaged material. The question arises whether these repair welds damage the components to an unacceptable degree or not, and a complete replacement can be avoided. This work aims at studying the effect of the welding process on the damage state of the material on the example of the widely used X20 steel and advising Eskom on the weldability limits of this steel. Real welds consisting of new and creep aged steel were prepared and characterised. Furthermore, the heat input was simulated in additional samples using Gleeble thermomechanical equipment.en_ZA
dc.identifier.apacitationMolokwane, T. J. (2013). <i>Microstructural and property assessment of creep aged 12cr steel after welding</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Materials Engineering. Retrieved from http://hdl.handle.net/11427/8678en_ZA
dc.identifier.chicagocitationMolokwane, Teboho Jacob. <i>"Microstructural and property assessment of creep aged 12cr steel after welding."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Materials Engineering, 2013. http://hdl.handle.net/11427/8678en_ZA
dc.identifier.citationMolokwane, T. 2013. Microstructural and property assessment of creep aged 12cr steel after welding. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Molokwane, Teboho Jacob AB - The electricity public utility of Eskom (South Africa) has an ageing fleet of power generation equipment and due to shortage of capacity there is limited time for maintenance and replacements. Complete main steam pipework replacements are not practical and in many instances selective welding must be done on creep aged and sometimes creep damaged material. The question arises whether these repair welds damage the components to an unacceptable degree or not, and a complete replacement can be avoided. This work aims at studying the effect of the welding process on the damage state of the material on the example of the widely used X20 steel and advising Eskom on the weldability limits of this steel. Real welds consisting of new and creep aged steel were prepared and characterised. Furthermore, the heat input was simulated in additional samples using Gleeble thermomechanical equipment. DA - 2013 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2013 T1 - Microstructural and property assessment of creep aged 12cr steel after welding TI - Microstructural and property assessment of creep aged 12cr steel after welding UR - http://hdl.handle.net/11427/8678 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/8678
dc.identifier.vancouvercitationMolokwane TJ. Microstructural and property assessment of creep aged 12cr steel after welding. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Materials Engineering, 2013 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/8678en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentCentre for Materials Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.titleMicrostructural and property assessment of creep aged 12cr steel after weldingen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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