Microstructure-informed statistical modelling of cleavage fracture in high strength steels considering through-thickness inhomogeneities

Autor:	Quanxin Jiang, V.M. Bertolo, V.A. Popovich, J. Sietsma, Carey L. Walters
Rok vydání:	2022
Předmět:	Mechanics of Materials Mechanical Engineering General Materials Science Fracture toughness Microstructural inhomogeneity Statistical modelling Cleavage
Zdroj:	Engineering Fracture Mechanics, 267
ISSN:	0013-7944
DOI:	10.1016/j.engfracmech.2022.108432
Popis:	Thick section S690 QT steel is modelled with a modified multibarrier model that is based on the weakest-link mechanism. Segregation bands are modelled as discrete layers which have different grain size, yield properties, and local fracture parameters from outside of the bands. The results show that embrittlement from segregation bands can only be adequately reflected if the inhomogeneities of the fracture parameters are accounted for. The present methodology quantitively captures the cooperation of complex microstructural features in cleavage and can facilitate the trade-off between the effects of various microstructural parameters in toughness control.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::426adffe61016a73a32e96f681a788c2 https://doi.org/10.1016/j.engfracmech.2022.108432 Zobrazit plný text záznamu Full Text from ScienceDirect