University of Oulu

Quanxin Jiang, Virgínia M. Bertolo, Sakari Pallaspuro, Vera Popovich, Jilt Sietsma, Carey L. Walters, Microstructure-based cleavage parameters in bainitic, martensitic, and ferritic steels, Engineering Fracture Mechanics, Volume 281, 2023, 109146, ISSN 0013-7944,

Microstructure-based cleavage parameters in bainitic, martensitic, and ferritic steels

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Author: Jiang, Quanxin1; Bertolo, Virgínia M.1; Pallaspuro, Sakari2;
Organizations: 1Materials Science and Engineering, Delft University of Technology, Delft, The Netherlands
2Materials and Mechanical Engineering, Centre for Advanced Steels Research, University of Oulu, Oulu, Finland
3Maritime and Transport Technology, Delft University of Technology, Delft, The Netherlands
4Structural Dynamics, TNO, Delft, The Netherlands
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 11.8 MB)
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Language: English
Published: Elsevier, 2023
Publish Date: 2023-04-05


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.

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Series: Engineering fracture mechanics
ISSN: 0013-7944
ISSN-E: 1873-7315
ISSN-L: 0013-7944
Volume: 281
Article number: 109146
DOI: 10.1016/j.engfracmech.2023.109146
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
Funding: The authors acknowledge the support in the Micro-Tough research project (n. 16350) from the Dutch Research Council (NWO) and the consortium of partners that include Allseas Engineering, Dillinger, Lloyd's Register, The Dutch Ministry of Defence, and TNO.
Copyright information: © 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (