On the fatigue and dwell-fatigue behavior of a low-density steel and the correlated microstructure origin of damage mechanism

A. Moshiri; A. Zarei-Hanzaki; A. S. Anousheh; H. R. Abedi; Seok Su Sohn; Junha Yang; M. Jaskari; L. P. Karjalainen; F. Berto

doi:10.1016/j.jmrt.2021.10.135

On the fatigue and dwell-fatigue behavior of a low-density steel and the correlated microstructure origin of damage mechanism

A. Moshiri, A. Zarei-Hanzaki, A. S. Anousheh, H. R. Abedi, Seok Su Sohn, Junha Yang, M. Jaskari, L. P. Karjalainen, F. Berto

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

18 Citations (Scopus)

Abstract

The present work deals with revealing the fatigue and dwell-fatigue behavior and correlated damage mechanisms of Fe–Mn–Al–C lightweight steel. Surprisingly, alteration in loading mode from monotonic to cyclic induces reversible dislocation movement and facilitates the occurrence of dynamic strain aging. Additionally, applying dwell time by an acceleration of strain aging intensified stress asymmetry during dwell fatigue. The occurrence of strain aging has a bilateral effect on the crack initiation and growth. On one hand, strain aging stimulates twin formation and retards fatigue crack initiation, however, on the other hand, reduces hardening capacity, restricts the plastic deformation and facilitates crack propagation.

Original language	English
Pages (from-to)	6136-6154
Number of pages	19
Journal	Journal of Materials Research and Technology
Volume	15
DOIs	https://doi.org/10.1016/j.jmrt.2021.10.135
Publication status	Published - 2021 Nov 1

Bibliographical note

Publisher Copyright:
© 2021

Keywords

Cyclic deformation
Damage mechanism
Dwell-fatigue
Dynamic strain aging
Fractography
Low-density steel

ASJC Scopus subject areas

Ceramics and Composites
Biomaterials
Surfaces, Coatings and Films
Metals and Alloys

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10.1016/j.jmrt.2021.10.135

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title = "On the fatigue and dwell-fatigue behavior of a low-density steel and the correlated microstructure origin of damage mechanism",

abstract = "The present work deals with revealing the fatigue and dwell-fatigue behavior and correlated damage mechanisms of Fe–Mn–Al–C lightweight steel. Surprisingly, alteration in loading mode from monotonic to cyclic induces reversible dislocation movement and facilitates the occurrence of dynamic strain aging. Additionally, applying dwell time by an acceleration of strain aging intensified stress asymmetry during dwell fatigue. The occurrence of strain aging has a bilateral effect on the crack initiation and growth. On one hand, strain aging stimulates twin formation and retards fatigue crack initiation, however, on the other hand, reduces hardening capacity, restricts the plastic deformation and facilitates crack propagation.",

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T1 - On the fatigue and dwell-fatigue behavior of a low-density steel and the correlated microstructure origin of damage mechanism

AU - Moshiri, A.

AU - Zarei-Hanzaki, A.

AU - Anousheh, A. S.

AU - Abedi, H. R.

AU - Sohn, Seok Su

AU - Yang, Junha

AU - Jaskari, M.

AU - Karjalainen, L. P.

AU - Berto, F.

PY - 2021/11/1

Y1 - 2021/11/1

N2 - The present work deals with revealing the fatigue and dwell-fatigue behavior and correlated damage mechanisms of Fe–Mn–Al–C lightweight steel. Surprisingly, alteration in loading mode from monotonic to cyclic induces reversible dislocation movement and facilitates the occurrence of dynamic strain aging. Additionally, applying dwell time by an acceleration of strain aging intensified stress asymmetry during dwell fatigue. The occurrence of strain aging has a bilateral effect on the crack initiation and growth. On one hand, strain aging stimulates twin formation and retards fatigue crack initiation, however, on the other hand, reduces hardening capacity, restricts the plastic deformation and facilitates crack propagation.

AB - The present work deals with revealing the fatigue and dwell-fatigue behavior and correlated damage mechanisms of Fe–Mn–Al–C lightweight steel. Surprisingly, alteration in loading mode from monotonic to cyclic induces reversible dislocation movement and facilitates the occurrence of dynamic strain aging. Additionally, applying dwell time by an acceleration of strain aging intensified stress asymmetry during dwell fatigue. The occurrence of strain aging has a bilateral effect on the crack initiation and growth. On one hand, strain aging stimulates twin formation and retards fatigue crack initiation, however, on the other hand, reduces hardening capacity, restricts the plastic deformation and facilitates crack propagation.

KW - Cyclic deformation

KW - Damage mechanism

KW - Dwell-fatigue

KW - Dynamic strain aging

KW - Fractography

KW - Low-density steel

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DO - 10.1016/j.jmrt.2021.10.135

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SN - 2238-7854

VL - 15

SP - 6136

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JO - Journal of Materials Research and Technology

JF - Journal of Materials Research and Technology

ER -

On the fatigue and dwell-fatigue behavior of a low-density steel and the correlated microstructure origin of damage mechanism

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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