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Dilatometer analysis of the one step quenching and partitioning process in a 1.5%Si steel
RISE - Research Institutes of Sweden (2017-2019), Material och produktion, KIMAB.
RISE - Research Institutes of Sweden (2017-2019), Material och produktion, KIMAB.
2014 (engelsk)Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

A one step quenching and partitioning process was applied to a 0.2%C-2.0%Mn-0.5%Cr- 1.5%Si steel by quenching austenitised samples to several different temperatures below the experimentally determined martensite start temperature of 397 °C and isothermally partitioning them before quenching to room temperature using a quenching deformation dilatometer. These treatments yielded predominantly martensitic microstructures containing 5:6 vol.% to 7:5 vol.% retained austenite, as measured by x-ray diffraction. In each treatment, strong dilation was recorded during isothermal partitioning, with little indication of phase transformation during subsequent cooling to room temperature. This behaviour lends weight to the idea that an isothermal phase transformation occurred during partitioning, and that the final microstructure is a mixture of athermally and isothermally formed constituents. These results also suggest that the final microstructure of this steel is mostly formed before and during partitioning. © (2014) Trans Tech Publications, Switzerland.

sted, utgiver, år, opplag, sider
Trans Tech Publications Ltd , 2014. Vol. 783-786, s. 880-885
Serie
Materials Science Forum, ISSN 0255-5476
Emneord [en]
Dilatometry, Martensite, Quenching and partitioning, Retained austenite
HSV kategori
Identifikatorer
URN: urn:nbn:se:ri:diva-12918DOI: 10.4028/www.scientific.net/MSF.783-786.880Scopus ID: 2-s2.0-84904566895ISBN: 9783038350736 (tryckt)OAI: oai:DiVA.org:ri-12918DiVA, id: diva2:973111
Konferanse
8th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2013, Las Vegas, NV, 2 December 2013 through 6 December 2013, 105675
Tilgjengelig fra: 2016-09-22 Laget: 2016-09-22 Sist oppdatert: 2020-07-24bibliografisk kontrollert

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