Fatigue of Metals and Welded Joints

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metal Failure Analysis".

Deadline for manuscript submissions: 30 September 2025 | Viewed by 126

Special Issue Editor


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Guest Editor
Instituto Politécnico Nacional CIITEC-IPN, Mexico City 02250, Mexico
Interests: mechanical behavior; welding
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Special Issue Information

Dear Colleagues,

Fatigue is defined as the modification of a material’s properties when cyclic loading is applied; this can generate the formation of cracks and lead to fracture. On the other hand, welding is a process that is used to weld similar and/or dissimilar metallic materials for the manufacture of machine components and structures, which are generally subjected to fatigue.

This Special Issue of Metals is devoted to publishing original work in terms of the fatigue of materials and welded joints. Assessments of low cycle, high cycle, and very high cycle fatigue approaches, including materials with and without welding, are invited. Papers based on experimental and numerical approaches are welcome.

Prof. Dr. Ricardo Rafael Ambriz Rojas
Guest Editor

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Keywords

  • fatigue
  • fracture
  • welding
  • experimental and numerical analysis

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Published Papers (1 paper)

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Research

13 pages, 9762 KiB  
Article
Fatigue Damage Assessment in AL6XN Stainless Steel Based on the Strain-Hardening Exponent n-Value
by Donovan Ramírez-Acevedo, Ricardo Rafael Ambriz, Christian Jesús García, Cesar Mendoza Gómora and David Jaramillo
Metals 2025, 15(5), 472; https://doi.org/10.3390/met15050472 - 22 Apr 2025
Viewed by 123
Abstract
The fatigue life curve was determined for the AL6XN stainless steel under strain-controlled Low Cycle Fatigue (LCF) tests. Additionally, a specific number of loading cycles were applied to new specimens made from the same AL6XN alloy batch to set an Accumulated Fatigue Damage [...] Read more.
The fatigue life curve was determined for the AL6XN stainless steel under strain-controlled Low Cycle Fatigue (LCF) tests. Additionally, a specific number of loading cycles were applied to new specimens made from the same AL6XN alloy batch to set an Accumulated Fatigue Damage (AFD) based on the Palmgren–Miner rule. The AFD was 0.25, 0.50 and 0.75; subsequently, these specimens were subjected to tensile tests. It was observed that all AFD specimens exhibited a yield strength increment with respect to the AL6XN material property, thus, it was similar to a strain-hardening mechanism. However, the stress–strain behavior and microstructure characterization showed a microvoid nucleation and growth mechanism that competed against the strain-hardening one. The fracture in the 0.75 AFD specimens was dominated by this microvoid-based mechanism. The experimental results indicated that the strain-hardening exponent (n-value) and electrical resistivity (ρ-value) were consistently modified by the AFD in all the specimens, with an inverse linear relationship for the n-value and a nonlinear increasing behavior for the ρ-value. Full article
(This article belongs to the Special Issue Fatigue of Metals and Welded Joints)
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