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<div class="csl-entry">de Oro Calderon, R., Jaliliziyaeian, M., Gierl-Mayer, C., & Danninger, H. (2017). Effects of H2 Atmospheres on Sintering of Low Alloy Steels Containing Oxygen-Sensitive Masteralloys. <i>JOM Journal of the Minerals, Metals and Materials Society</i>, <i>69</i>(4), 635–644. https://doi.org/10.1007/s11837-017-2287-9</div>
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Processing of novel sintered steels with compositions including oxygen-sensitive elements requires deep understanding of the chemistry of sintering. The use of H2 atmospheres alleviates the oxygen transference from the base powder to the oxygen-sensitive particles. However, in H2, methane formation at 700–1200°C causes dramatic homogeneous decarburization of the part that affects both mechanical behavior and dimensional stability. The intensity and the critical temperatures of this effect depend strongly on the alloying elements, being significantly enhanced in presence of Si. When combining the alloying elements as Fe-Mn-Si masteralloys, methane formation is enhanced around 760°C due to the high Mn content (40 wt.%) in the masteralloys. Nevertheless, the benefits of H2 towards oxide reduction can still be advantageously used if diluting it in the form of N2-H2 atmospheres, or if limiting the use of H2 to temperatures below 500°C. Thus, decarburization due to methane formation can be successfully controlled.
en
dc.description.sponsorship
European Union’s SeventhFramework Programme FP7/2007–2013
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dc.language
English
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en
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SPRINGER
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JOM Journal of the Minerals, Metals and Materials Society
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dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
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dc.title
Effects of H2 Atmospheres on Sintering of Low Alloy Steels Containing Oxygen-Sensitive Masteralloys
en
dc.type
Article
en
dc.type
Artikel
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dc.rights.license
Creative Commons Namensnennung 4.0 International
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Creative Commons Attribution 4.0 International
en
dc.description.startpage
635
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dc.description.endpage
644
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dc.relation.grantno
625556
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dc.rights.holder
2017 The Author(s)
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dc.type.category
Original Research Article
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tuw.container.volume
69
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tuw.container.issue
4
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tuw.journal.peerreviewed
true
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tuw.peerreviewed
true
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tuw.version
vor
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dcterms.isPartOf.title
JOM Journal of the Minerals, Metals and Materials Society
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tuw.publication.orgunit
E164 - Institut für Chemische Technologien und Analytik