Investigation into the transformation products of CD3MN cast duplex stainless steel

dc.contributor.author Johnson, Eric
dc.contributor.department Materials Science and Engineering
dc.date 2020-08-05T05:05:32.000
dc.date.accessioned 2021-02-26T08:46:09Z
dc.date.available 2021-02-26T08:46:09Z
dc.date.copyright Tue Jan 01 00:00:00 UTC 2002
dc.date.issued 2002-01-01
dc.description.abstract <p>The transformation products for CD3MN cast duplex stainless steel (DSS) were investigated between the temperatures of 600 to 9500C. The primary research evaluated the kinetics of sigma ([Sigma]) phase formation by developing the time-temperature-transformation diagram for CD3MN and comparing these results to wrought duplex stainless steel transformation diagrams. The results of the study showed that the nose of the time-temperature-transformation diagram is dependent on chemistry and not a difference between the cast and wrought structures. The investigation found that sigma formed in the CD3MN alloy between the temperatures of 700 and 9000C, with the fastest rate of formation occurring at 8000C. By modeling the sigma growth by the diffusion of Cr and Mo through the matrix, it was found that the growth of sigma is very slow at temperatures below 9000C and the phase percent sigma is dependent on the accelerated diffusion of Cr and Mo at the grain boundaries and nucleation of new sigma.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/rtd/20114/
dc.identifier.articleid 21113
dc.identifier.contextkey 18792571
dc.identifier.doi https://doi.org/10.31274/rtd-20200803-230
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath rtd/20114
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/97481
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/rtd/20114/Johnson_ISU_2002_J653.pdf|||Fri Jan 14 22:24:20 UTC 2022
dc.subject.keywords Materials science and engineering
dc.title Investigation into the transformation products of CD3MN cast duplex stainless steel
dc.type article
dc.type.genre thesis
dspace.entity.type Publication
relation.isOrgUnitOfPublication bf9f7e3e-25bd-44d3-b49c-ed98372dee5e
thesis.degree.discipline Materials Science and Engineering
thesis.degree.level thesis
thesis.degree.name Master of Science
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