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      Martensitic transformation induced by cold deformation of lean duplex stainless steel UNS S32304

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          Abstract

          Lean duplex UNS S32304 is an austenitic ferritic stainless steel with pitting resistance equivalent number around 24-25. Its corrosion resistance is similar to AISI 316L steel, but with the advantage of a yield limit two times superior to conventional austenitic grades. Deformation induced martensitic transformations (γ→ε and γ→ α') have been extensively studied in austenitic steels, but few works were published about these reactions in austenitic ferritic grades. In the present work, deformation induced martensitic transformation in lean duplex UNS S32304 was investigated by means of magnetic measurements and X-ray diffraction. The curves of α' martensite volume fraction against true deformation by cold rolling were constructed and compared to duplex and austenitic grades. It was found that lean duplex UNS S32304 is much more susceptible to martensitic transformation than duplex UNS S31803, which can be explained by its lower Mo and Ni contents.

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          Most cited references11

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          Influence of the martensitic transformation on the deformation behaviour of an AISI 316 stainless steel at low temperatures

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            Evaluation of the martensitic transformations in austenitic stainless steels

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              Standard Test Method for Determining Volume Fraction by Systematic Manual Point Count

              (2008)
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                mr
                Materials Research
                Mat. Res.
                ABM, ABC, ABPol (São Carlos )
                1980-5373
                April 2014
                : 17
                : 2
                : 381-385
                Affiliations
                [1 ] Universidade Federal Fluminense Brazil
                [2 ] Universidade Federal de Itajubá Brazil
                [3 ] Universidade Federal de Santa Catarina Brazil
                Article
                S1516-14392014000200014
                10.1590/S1516-14392014000200014
                56d02e9f-8ad3-495b-9b6a-33d0bbb67569

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1516-1439&lng=en
                Categories
                ENGINEERING, CHEMICAL
                MATERIALS SCIENCE, MULTIDISCIPLINARY
                METALLURGY & METALLURGICAL ENGINEERING

                General materials science,General engineering
                martensitic transformation,cold deformation,lean duplex stainless steel

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