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dc.contributor.advisorWestermann, Ida
dc.contributor.advisorKarlsen, Morten
dc.contributor.authorJahrsengene, Gøril
dc.date.accessioned2016-02-05T15:00:43Z
dc.date.available2016-02-05T15:00:43Z
dc.date.created2015-06-15
dc.date.issued2015
dc.identifierntnudaim:13762
dc.identifier.urihttp://hdl.handle.net/11250/2377278
dc.description.abstractThe austenite content in 9% Ni steel was investigated with EBSD during and after in situ heating to different temperatures in the two phase region of the phase diagram, after first obtaining a coarse grained HAZ using weld simulation. This temperature region was discovered to be much narrower than during equilibrium. The austenite formed at 590°C grew slowly and was stable after cooling to ambient temperatures. The austenite grew at laths and previous grain boundaries. The fraction retained austenite varied from 5 to 25% depending on the area investigated. The austenite formed at higher temperatures was not stable, and the retained austenite content varied from 1 to, in the temperatures closeset to 590°C, 5%. The quality of the austenite phase was confirmed by using Kurdujmov-Sachs orientation relationship.
dc.languageeng
dc.publisherNTNU
dc.subjectIndustriell kjemi og bioteknologi, Materialkjemi og energiteknologi
dc.titleEBSD Microstructure Characterization of 9% Nickel Steel during In Situ Heat Treatment
dc.typeMaster thesis
dc.source.pagenumber170


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