Article Improving the Dimensional Stability and Mechanical Properties of AISI 316L + B Sinters by Si3N4 Addition

Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

Abstract

The following paper describes a new and eective method to obtain high-density sinters
with simultaneously decreased distortions, produced by one press and sinter operation. This eect
was achieved through the induced disappearance of the eutectic liquid phase. The study was carried
out on AISI 316L stainless steel powder that was mixed with elemental boron and silicon nitride.
Boron was used as a sintering process activator. The scientific novelty of this publication consists of
the use of a silicon nitride as a solid-state nitrogen carrier that was intended to change the borides’
morphology by binding boron. Based on the thermodynamic calculations, 20 blends of various
compositions were tested for physical properties, porosity, microstructure, and mechanical properties.
Moreover, phase compositions for selected samples were analyzed. It was shown that the addition
of silicon nitride as a nitrogen carrier decreases the boron-based eutectic phase volume and both
increases the mechanical properties and decreases after-sintering distortions. An explanation of the
observed phenomena was also proposed.
Originalspracheenglisch
Aufsatznummer1798
Seitenumfang15
FachzeitschriftMaterials
Jahrgang12
Ausgabenummer11
DOIs
PublikationsstatusVeröffentlicht - 3 Jun 2019

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Boron
Dimensional stability
Silicon nitride
Mechanical properties
Eutectics
Nitrogen
Sintering
Boron nitride
Stainless Steel
Phase composition
Powders
Stainless steel
Physical properties
Porosity
Thermodynamics
Microstructure
Liquids
silicon nitride

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    Article Improving the Dimensional Stability and Mechanical Properties of AISI 316L + B Sinters by Si3N4 Addition. / Skalon, Mateusz; Buzolin, Ricardo Henrique; Kazior, Jan; Sommitsch, Christoph; Hebda, Marek .

    in: Materials, Jahrgang 12, Nr. 11, 1798, 03.06.2019.

    Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

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    abstract = "The following paper describes a new and eective method to obtain high-density sinterswith simultaneously decreased distortions, produced by one press and sinter operation. This eectwas achieved through the induced disappearance of the eutectic liquid phase. The study was carriedout on AISI 316L stainless steel powder that was mixed with elemental boron and silicon nitride.Boron was used as a sintering process activator. The scientific novelty of this publication consists ofthe use of a silicon nitride as a solid-state nitrogen carrier that was intended to change the borides’morphology by binding boron. Based on the thermodynamic calculations, 20 blends of variouscompositions were tested for physical properties, porosity, microstructure, and mechanical properties.Moreover, phase compositions for selected samples were analyzed. It was shown that the additionof silicon nitride as a nitrogen carrier decreases the boron-based eutectic phase volume and bothincreases the mechanical properties and decreases after-sintering distortions. An explanation of theobserved phenomena was also proposed.",
    keywords = "boron, 316L, silicon nitride, shape distortion, liquid phase sintering, mechanical properties",
    author = "Mateusz Skalon and Buzolin, {Ricardo Henrique} and Jan Kazior and Christoph Sommitsch and Marek Hebda",
    year = "2019",
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    T1 - Article Improving the Dimensional Stability and Mechanical Properties of AISI 316L + B Sinters by Si3N4 Addition

    AU - Skalon, Mateusz

    AU - Buzolin, Ricardo Henrique

    AU - Kazior, Jan

    AU - Sommitsch, Christoph

    AU - Hebda, Marek

    PY - 2019/6/3

    Y1 - 2019/6/3

    N2 - The following paper describes a new and eective method to obtain high-density sinterswith simultaneously decreased distortions, produced by one press and sinter operation. This eectwas achieved through the induced disappearance of the eutectic liquid phase. The study was carriedout on AISI 316L stainless steel powder that was mixed with elemental boron and silicon nitride.Boron was used as a sintering process activator. The scientific novelty of this publication consists ofthe use of a silicon nitride as a solid-state nitrogen carrier that was intended to change the borides’morphology by binding boron. Based on the thermodynamic calculations, 20 blends of variouscompositions were tested for physical properties, porosity, microstructure, and mechanical properties.Moreover, phase compositions for selected samples were analyzed. It was shown that the additionof silicon nitride as a nitrogen carrier decreases the boron-based eutectic phase volume and bothincreases the mechanical properties and decreases after-sintering distortions. An explanation of theobserved phenomena was also proposed.

    AB - The following paper describes a new and eective method to obtain high-density sinterswith simultaneously decreased distortions, produced by one press and sinter operation. This eectwas achieved through the induced disappearance of the eutectic liquid phase. The study was carriedout on AISI 316L stainless steel powder that was mixed with elemental boron and silicon nitride.Boron was used as a sintering process activator. The scientific novelty of this publication consists ofthe use of a silicon nitride as a solid-state nitrogen carrier that was intended to change the borides’morphology by binding boron. Based on the thermodynamic calculations, 20 blends of variouscompositions were tested for physical properties, porosity, microstructure, and mechanical properties.Moreover, phase compositions for selected samples were analyzed. It was shown that the additionof silicon nitride as a nitrogen carrier decreases the boron-based eutectic phase volume and bothincreases the mechanical properties and decreases after-sintering distortions. An explanation of theobserved phenomena was also proposed.

    KW - boron

    KW - 316L

    KW - silicon nitride

    KW - shape distortion

    KW - liquid phase sintering

    KW - mechanical properties

    U2 - 10.3390/ma12111798

    DO - 10.3390/ma12111798

    M3 - Article

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    JO - Materials

    JF - Materials

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