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Coarsening of cementite during tempering of a martensitic steel
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Metallografi.ORCID-id: 0000-0003-4825-7430
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Metallografi.
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Metallografi.ORCID-id: 0000-0003-1102-4342
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Metallografi.ORCID-id: 0000-0003-3598-2465
(engelsk)Manuskript (preprint) (Annet vitenskapelig)
Abstract [en]

Coarsening of cementite (M3C) in a martensitic steel alloy Fe–1C–1Cr (wt. %) during tempering at 700 °C was investigated by electron microscopy and kinetic modelling. It is shown that the large M3C carbides are mostly located at high-angle grain boundaries in the coarsening stage and simple kinetic simulations predict the experimentally observed mean size evolution well when grain boundary diffusion of Cr is taken into account. However, the particle size distribution of M3C maintain a log-normal distribution throughout the whole extended tempering process (5000 h at 700 °C), which indicates that a modified LSW distribution , as predicted by classical steady-state coarsening theory , is not fully adequate for practical purposes in tempering of martensitic steels.

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URN: urn:nbn:se:kth:diva-233449OAI: oai:DiVA.org:kth-233449DiVA, id: diva2:1239930
Merknad

QC 20180821

Tilgjengelig fra: 2018-08-20 Laget: 2018-08-20 Sist oppdatert: 2018-08-21bibliografisk kontrollert
Inngår i avhandling
1. An experimental and theoretical study of precipitation during tempering of martensite in Fe-C-Cr alloys
Åpne denne publikasjonen i ny fane eller vindu >>An experimental and theoretical study of precipitation during tempering of martensite in Fe-C-Cr alloys
2018 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
sted, utgiver, år, opplag, sider
Stockholm: KTH Royal Institute of Technology, 2018. s. 59
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urn:nbn:se:kth:diva-233502 (URN)978-91-7729-843-4 (ISBN)
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2018-09-14, sal F3, Lindstedtsvägen 26, Stockholm, 10:00 (engelsk)
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Veileder
Merknad

QC 20180821

Tilgjengelig fra: 2018-08-21 Laget: 2018-08-21 Sist oppdatert: 2020-05-11bibliografisk kontrollert

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Hou, ZiyongBabu, PrasathHedström, PeterOdqvist, Joakim

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