Title
Microstructure-based cleavage parameters in bainitic, martensitic, and ferritic steels
Author
Jiang, Q.
Bertolo, V.M.
Pallaspuro, S.
Popovich, V.
Sietsma, J.
Walters, C.L.
Publication year
2023
Abstract
Multi-barrier cleavage models consider cleavage fracture which is characterized by a series of microscale events. One of the challenges for multi-barrier cleavage models is the strong variations of cleavage parameters across different types of steels. The source and magnitude of the variations have not been studied systematically. In the current paper, cleavage parameters corresponding to fracture initiation at a hard particle and crack propagation overcoming grain boundaries are determined for three bainitic steels, a martensitic steel, and a ferritic steel, using a recently proposed model. It is found that the particle fracture parameter depends on particle morphology and composition, while the grain boundary cleavage parameter depends on the hierarchical grain structure. The determined values of cleavage parameters present a high degree of consistency among the five different steels, which allows the further application on microstructure design to control macroscopic toughness. (C) 2023 The Author(s)
Subject
Cleavage
Fracture toughness
Local approach to fracture
Multi-barrier modelling
Statistical modelling
Maritime & Offshore
Energy
To reference this document use:
http://resolver.tudelft.nl/uuid:70ba510e-1855-422e-b573-76eafb4ffcd0
DOI
https://doi.org/10.1016/j.engfracmech.2023.109146
TNO identifier
982779
Publisher
Elsevier Ltd
ISSN
0013-7944
Source
Engineering Fracture Mechanics, 281 (281), 1-16
Document type
article