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Crystal Plasticity Modeling of Grey Cast Irons under Tension, Compression and Fatigue Loadings

Year of publication

2022

Authors

Balobanov, Viacheslav; Lindroos, Matti; Andersson, Tom; Laukkanen, Anssi

Abstract

The study of the micromechanical performance of materials is important in explaining their macrostructural behavior, such as fracture and fatigue. This paper is aimed, among other things, at reducing the deficiency of microstructural models of grey cast irons in the literature. For this purpose, a numerical modeling approach based on the crystal plasticity (CP) theory is used. Both synthetic models and models based on scanning electron microscope (SEM) electron backscatter diffraction (EBSD) imaging finite element are utilized. For the metal phase, a CP model for body-centered cubic (BCC) crystals is adopted. A cleavage damage model is introduced as a strain-like variable; it accounts for crack closure in a smeared manner as the load reverses, which is especially important for fatigue modeling. A temperature dependence is included in some material parameters. The graphite phase is modeled using the CP model for hexagonal close-packed (HCP) crystal and has a significant difference in tensile and compressive behavior, which determines a similar macro-level behavior for cast iron. The numerical simulation results are compared with experimental tensile and compression tests at different temperatures, as well as with fatigue experiments. The comparison revealed a good performance of the modeling approach.
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Organizations and authors

VTT Technical Research Centre of Finland Ltd

Laukkanen Anssi Orcid -palvelun logo

Lindroos Matti Orcid -palvelun logo

Andersson Tom Orcid -palvelun logo

Balobanov Viacheslav

Publication type

Publication format

Article

Parent publication type

Journal

Article type

Original article

Audience

Scientific

Peer-reviewed

Peer-Reviewed

MINEDU's publication type classification code

A1 Journal article (refereed), original research

Publication channel information

Journal

Crystals

Volume

12

Issue

2

Article number

238

​Publication forum

75751

​Publication forum level

1

Open access

Open access in the publisher’s service

Yes

Open access of publication channel

Fully open publication channel

License of the publisher’s version

CC BY

Self-archived

No

Article processing fee (EUR)

811

Year of payment for the open publication fee

2022

Other information

Fields of science

Physical sciences; Chemical engineering; Materials engineering

Keywords

[object Object],[object Object],[object Object],[object Object],[object Object]

Language

English

International co-publication

No

Co-publication with a company

No

DOI

10.3390/cryst12020238

The publication is included in the Ministry of Education and Culture’s Publication data collection

Yes