Mesoscopical finite element simulation of fatigue crack propagation in WC/Co-hardmetal

Özden, Utku Ahmet; Mingard, Ken; Zivcec, Maria; Bezold, Alexander; Broeckmann, Christoph

doi:10.1016/j.ijrmhm.2014.07.022

Cited by 40 publications

(13 citation statements)

References 22 publications

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“…For the representation of the microstructure, the most straightforward approach is the immediate mapping of a micrograph in a geometric finite element mesh [27]. As a benefit, the calculation leads to matching the simulation and experimental results [28]. However, the simulated material behaviour is restricted to the instantly mapped area.…”

Section: Introductionmentioning

confidence: 99%

Microstructure-based fatigue modelling with residual stresses: Prediction of the microcrack initiation around inclusions

Lian

Bao

et al. 2019

Materials Science and Engineering: A

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In the investigation of fatigue properties of metals, the microstructure-based modelling has shown its powerful applicability in predicting the microcrack initiation as well as the fatigue life. However, proper treatment of the inclusions, which are the major fatigue crack trigger especially for the very high cycle fatigue regime, is still missing. It is emphasised that in addition to the geometrical representation and the basic mechanical properties assignment of the inclusions, the residual stresses developed between the steel matrix and inclusions during the cooling processes due to their distinct thermal expansion coefficients play a non-negligible role in determining the fatigue properties. Therefore, it is aimed, in this study, to propose a microstructure-based modelling approach to account for the effects of residual stresses induced by the rapid cooling process on the fatigue crack initiation behaviour of a martensitic steel, for which the majority of the fatigue crack is formed around the calcium aluminate inclusions in experiments. The entire approach is decomposed into two processes: i) simulation of the cooling process to obtain the residual stress profile around the inclusion and ii) conducting the fatigue simulation using a crystal plasticity model including the mapped residual stress profile from the previous step. It is shown that the proposed approach accurately predicts the fatigue crack initiation sites around the inclusions corresponding to the experimental findings, while the modelling approach without the residual stresses fails to predict the correct locations of the crack initiation, revealing the necessity to consider the residual stresses for the future fatigue modelling and assessment.

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Section: Introductionmentioning

confidence: 99%

Microstructure-based fatigue modelling with residual stresses: Prediction of the microcrack initiation around inclusions

Lian

Bao

et al. 2019

Materials Science and Engineering: A

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“…As to measurement hardware, EBSD compatible with focused ion beam (FIB) [40,41] or broad ion beam (BIB) [42] provides serial EBSD datasets and makes 3D structural characterization (3D EBSD) possible; in situ EBSD technique [43,44] makes real-time and dynamic observing practicable; and EBSD incorporated with scanning transmission electron microscopy (STEM) [45] enhances the resolution of EBSD datasets. As to computational approaches, interface structures [46][47][48], surface energy [49] and sliding resistance [50] for specific boundaries can be modelled and investigated, and new computational techniques [51][52][53] have enabled mutual corroboration with virtual EBSD measurements.…”

Section: Introductionmentioning

confidence: 99%

Characterization of grain boundary character distribution in cemented carbides via a stereological method

Xiu-gan

Yuan

2022

PAC

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This paper reports the interdisciplinary approach of simultaneous use of a stereological method, namely the five parameter analysis (FPA) method and the grain boundary character distribution (GBCD) in cemented carbides. There are six major aspects: i) the background and motivations of the interdisciplinary approach, ii) the principle of the FPA method, iii) orientation texture of boundary planes with specific misorientations via ?(?g, n) mode in cemented carbide, iv) orientation texture of habit planes regardless of misorientations via ?(n) mode in cemented carbide, v) application of the FPA method to serial cemented carbide samples and vi) boundary sort methods before using the FPA method. The work aims at presenting beneficial reference for studying structural and distribution features of special coincidence site lattice (CSL) boundaries in a statistical manner, and in turn increasing the knowledge about the structure-property relationship in cemented carbides.

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“…Generally, there are two approaches to generate RVE. One method refers to the direct mapping from the micrograph of material [11], allowing an immediate comparison between simulated and experimental results [12]. But the generated RVE can just present the local properties of material because the simulated results are mostly restricted to the mapped regions.…”

Section: Introductionmentioning

confidence: 99%

Micromechanical modeling of cleavage fracture for a ferritic-pearlitic steel

Piao

Wang

et al. 2019

Engineering Fracture Mechanics

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This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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Mesoscopical finite element simulation of fatigue crack propagation in WC/Co-hardmetal

Cited by 40 publications

References 22 publications

Microstructure-based fatigue modelling with residual stresses: Prediction of the microcrack initiation around inclusions

Microstructure-based fatigue modelling with residual stresses: Prediction of the microcrack initiation around inclusions

Characterization of grain boundary character distribution in cemented carbides via a stereological method

Micromechanical modeling of cleavage fracture for a ferritic-pearlitic steel

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