PSI - Issue 41

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000 il l li t . i i t. t t l t it i

www.elsevier.com/locate/procedia . l i . /l t / i

ScienceDirect

Procedia Structural Integrity 41 (2022) 492–499

2nd Mediterranean Conference on Fracture and Structural Integrity Size effect in fatigue life of Mg alloy Liviu Daniel Pîrvulescu a ,Anghel Vasile Cernescu a , Carmen O priș a , Liviu M arșavina a * a Politehnica University Timișoara, Victoriei Square No 2, Timișoara 300006, România a a a lit i i it i i , i t i i , i i , i

Abstract

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© 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the MedFract2Guest Editors. Attempts to reduce energy consumption and concerns about global environmental protection have led to increased interest in the use of lightweight materials, especially in areas such as the automotive and aerospace industries. This paper analyzes experimentally the effect of size on the fatigue duration of Mg alloys, considering the defects resulting from casting and the quality of the surface resulting from cutting. © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the MedFract2Guest Editors. Keywords: Energy; fatigue life; Mg alloy. 1. Introduction Due to their low density, high mechanical strength, magnesium-based alloys are considered by designers to be a substitute for steel and aluminum alloys. In addition to these favorable considerations, the high degree of structural defects resulting from the casting process is the main unfavorable consideration for the use of these materials, Watanabe (2016). Structural defects favor the onset of fatigue cracks during cyclic loading, which propagate and cause early failure of components in these materials. Experimental analyzes show that the fatigue strength of the materials decreases with increasing sample size, and this decrease is significant in the case of heterogeneous materials. li t i t t i l , i ll i t t ti i t i . i l i t ll t t i t ti ti ll , i i t t lti ti t lit t lti tti . t . li . . This is an open access ti l t li tt :// ti . /li / / . Peer-review under responsibility of the MedFract2G t it . ; ti li ; ll . . , , . , , . , . , .

* Corresponding author: Liviu Daniel PÎRVULESCU. Tel.: 40-256-403631; fax: 40-256403523. E-mail address: liviu-daniel.pirvulescu@upt.ro i t : i i i l . l.: ; : . il li i i l. i l t. o

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2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of the MedFract2Guest Editors. i i ti l t li i . li . i i ilit t t t it .

2452-3216 © 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the MedFract2Guest Editors. 10.1016/j.prostr.2022.05.055