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      Adjusting the Sintering Cycle of a Hadfield Sintered Steel Produced by Metal Injection Molding

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          Abstract

          Processing of high manganese austenitic sintered steels present several challenges concerning thermodynamic reactions that occur during the sintering of these materials such as Mn oxidation, sublimation and even the formation of liquid phases or undesired compounds, e.g. grain boundary carbides. Therefore it is extremely important to adjust the sintering parameters to obtain the adequate microstructure and properties. In this work, the effect of some sintering parameters, i.e. temperature, gas atmosphere and cooling rate are studied by dilatometry. The experiments revealed that the sintering temperature has small impact on the microstructure formation. On the other hand, the decrease on oxygen chemical potential in the furnace atmosphere resulted in less oxidation of the powder particles. Moreover, the increasing on the cooling rate to 50 °C/min avoided the formation of grain boundary carbides. As a main conclusion, a special sintering cycle for Hadfield steel samples was suggested.

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          Most cited references9

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          High manganese austenitic twinning induced plasticity steels: A review of the microstructure properties relationships

          (2011)
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            Hadfield's manganese steel

            (1888)
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              New trends and developments in automotive system engineering

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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
                December 2015
                : 18
                : suppl 2
                : 83-90
                Affiliations
                [1 ] Universidade Federal de Santa Catarina Brazil
                [2 ] Embraco Brazil
                Article
                S1516-14392015000800083
                10.1590/1516-1439.347114
                56decc3d-a9e8-42f1-aea7-f23eda1fd8d0

                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
                Hadfield,manganese,sintering
                General materials science, General engineering
                Hadfield, manganese, sintering

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