Fatigue crack growth in compacted and spheroidal graphite cast irons

J. Hosdez; N. Limodin; D. Najjar; J. F. Witz; E. Charkaluk; P. Osmond; A. Forré; F. Szmytka

doi:10.1016/j.ijfatigue.2019.105319

Fatigue crack growth in compacted and spheroidal graphite cast irons

J. Hosdez
, N. Limodin
, D. Najjar
, J. F. Witz
, E. Charkaluk
, P. Osmond
, A. Forré
, F. Szmytka

Université de Lille
Department of Mechanics École Polytechnique
Groupe PSA
Chemin de la Malmaison
CEA/UVSQ/CNRS

Research output: Contribution to journal › Article › peer-review

Abstract

The present paper focuses on the fatigue life of a Compacted Graphite cast Iron (CGI) as compared to a Spheroidal Graphite cast Iron (SGI). Fatigue crack growth laws have been determined with digital image correlation. Main difference between the materials is that cracks propagate faster in the CGI than in the SGI. X-ray tomography was also used in order to assess graphite morphologies and crack shapes. A complex morphology was observed for the vermicular graphite with rounded edges that limit notch effects. The crack spreads easily in CGI via a quasi cleavage mechanism and by propagating through graphite mainly by breaking the vermicules.

Original language	English
Article number	105319
Journal	International Journal of Fatigue
Volume	131
DOIs	https://doi.org/10.1016/j.ijfatigue.2019.105319
Publication status	Published - 1 Feb 2020
Externally published	Yes

Keywords

Compacted graphite cast iron
Crack propagation
Fatigue
Microtomography
Spheroidal graphite cast iron

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10.1016/j.ijfatigue.2019.105319

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title = "Fatigue crack growth in compacted and spheroidal graphite cast irons",

abstract = "The present paper focuses on the fatigue life of a Compacted Graphite cast Iron (CGI) as compared to a Spheroidal Graphite cast Iron (SGI). Fatigue crack growth laws have been determined with digital image correlation. Main difference between the materials is that cracks propagate faster in the CGI than in the SGI. X-ray tomography was also used in order to assess graphite morphologies and crack shapes. A complex morphology was observed for the vermicular graphite with rounded edges that limit notch effects. The crack spreads easily in CGI via a quasi cleavage mechanism and by propagating through graphite mainly by breaking the vermicules.",

keywords = "Compacted graphite cast iron, Crack propagation, Fatigue, Microtomography, Spheroidal graphite cast iron",

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T1 - Fatigue crack growth in compacted and spheroidal graphite cast irons

AU - Hosdez, J.

AU - Limodin, N.

AU - Najjar, D.

AU - Witz, J. F.

AU - Charkaluk, E.

AU - Osmond, P.

AU - Forré, A.

AU - Szmytka, F.

PY - 2020/2/1

Y1 - 2020/2/1

N2 - The present paper focuses on the fatigue life of a Compacted Graphite cast Iron (CGI) as compared to a Spheroidal Graphite cast Iron (SGI). Fatigue crack growth laws have been determined with digital image correlation. Main difference between the materials is that cracks propagate faster in the CGI than in the SGI. X-ray tomography was also used in order to assess graphite morphologies and crack shapes. A complex morphology was observed for the vermicular graphite with rounded edges that limit notch effects. The crack spreads easily in CGI via a quasi cleavage mechanism and by propagating through graphite mainly by breaking the vermicules.

AB - The present paper focuses on the fatigue life of a Compacted Graphite cast Iron (CGI) as compared to a Spheroidal Graphite cast Iron (SGI). Fatigue crack growth laws have been determined with digital image correlation. Main difference between the materials is that cracks propagate faster in the CGI than in the SGI. X-ray tomography was also used in order to assess graphite morphologies and crack shapes. A complex morphology was observed for the vermicular graphite with rounded edges that limit notch effects. The crack spreads easily in CGI via a quasi cleavage mechanism and by propagating through graphite mainly by breaking the vermicules.

KW - Compacted graphite cast iron

KW - Crack propagation

KW - Fatigue

KW - Microtomography

KW - Spheroidal graphite cast iron

UR - https://www.scopus.com/pages/publications/85073199789

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DO - 10.1016/j.ijfatigue.2019.105319

M3 - Article

AN - SCOPUS:85073199789

SN - 0142-1123

VL - 131

JO - International Journal of Fatigue

JF - International Journal of Fatigue

M1 - 105319

ER -

Fatigue crack growth in compacted and spheroidal graphite cast irons

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Keywords

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