Neutron diffraction study of the low-temperature ageing of martensite in dual-phase steel

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TypeArticle
Journal titleZeitschrift für Metallkunde
ISSN0044-3093
Volume94
Issue4
Pages424435; # of pages: 12
AbstractNeutron diffraction measurements were used to obtain a better understanding of the ageing behaviour in dual-phase ferrite + martensite steels. Therefore, the influence of different ageing treatments on the tempering of low-alloyed 0.4 and 0.7 % C FeMnCrMo-martensite and 0.1 % C C FeMnCrMo dual-phase steels was investigated. On tempering at 170 and 350 °C, the sequential precipitation of η- and 0-carbides, as well as the loss of tetragonality was observed in the martensite. The decrease in austenite lattice parameter after tempering is due to stress relaxation in the material. These observations offer an acceptable explanation for the large yield stress increase after ageing at 170 °C.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Canadian Neutron Beam Centre
Peer reviewedNo
Identifier10431937
NPARC number12338991
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Record identifiere7bab7f8-fca4-479c-bb51-707d459b7136
Record created2009-09-11
Record modified2016-05-09
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