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Materials Science and Technology Volume 37, 2021 - Issue 3
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Research Article

Effect of spherical inclusions on fatigue anisotropy of HSLA-100 steel

Arezou Abyazia Department of Materials Science and Engineering, Azarbaijan Shahid Madani University, Tabriz, IranCorrespondence[email protected]
&
Ali Reza Ebrahimib Department of Materials and Metallurgical Engineering, Amirkabir University of Technology, Tehran, Iran
Pages 314-325 | Received 09 Sep 2020, Accepted 11 Feb 2021, Published online: 04 Mar 2021
 
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Abstract

The fatigue limit of the transverse direction was obtained remarkably (125 MPa) lower than that of the longitudinal direction. The fatigue anisotropy was related to different characteristics of inclusions on longitudinal and transverse planes as well as the crystallographic texture. These parameters change the fatigue crack initiation mode from the metal matrix to spherical inclusions. Exaggeratedly conservative results were obtained utilising the Murakami’s model in predicting the lower bound fatigue limit and largest size of inclusion.

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No potential conflict of interest was reported by the author(s).

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