Issue 76

L. Wang et alii, Frattura ed Integrità Strutturale, 76 (2026) 169-182; DOI: 10.3221/IGF-ESIS.76.11

Effects of machining methods on uniaxial tensile properties of 75μm thick 304L stainless steel foil

Lin Wang Department of Civil Engineering, Hefei University, China Anhui Provincial Key Laboratory of Urban Rail Transit Safety and Emergency Management, Hefei University, China linw@smu.edu, http://orcid.org/0000-0002-6481-2409 Feng Gao Department of Civil Engineering, Hefei University, China 1570670405@qq.com

Citation: Wang, L., Gao, F., Effects of machining methods on plastic performance of 75μm thick 304L stainless steel foil under uniaxial tension, Fracture and Structural integrity, 76 (2026) 169-182.

Received: 05.12.2025 Accepted: 04.02.2026 Published: 13.02.2026 Issue: 04.2026

Copyright: © 2026 This is an open access article under the terms of the CC-BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

K EYWORDS . 304L stainless steel foil, Machining methods, Edge defect, Digital image correlation, Failure mode.

I NTRODUCTION ltra-thin metal foil, such as the stainless steel 304L (SS304L), is promising for applications like bipolar plates in automotive fuel cells, due to their unique combination of high strength-to-weight ratio, flexibility, and conductivity [1-8]. To improve material specifications and manufacturing processes for these components, more consistent and precise data on their plastic deformation behavior and a deeper understanding of their forming failure are required. When characteristic dimensions scale down to micro- level, typically less than 300μm, materials can no longer be treated as a U

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