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Metals
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Fatigue Behavior of Structural Steel
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Fatigue Behavior of Structural Steel

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

Deadline for manuscript submissions: closed (30 November 2021) | Viewed by 7874

Special Issue Editor

Dr. Gary Prinz

E-Mail Website
Guest Editor
Department of Civil Engineering, University of Arkansas, Fayetteville, AR, USA
Interests: mechanics and simulation of ductile fracture; ultra low- and high-cycle fatigue of structural components; steel infrastructure fatigue assessment methods; seismic design and retrofit solutions for steel structures; large-scale experimental testing of structural components and systems; computer simulation of structures under complex loads

Special Issue Information

Dear Colleagues,

Structural systems or components subjected to repeated loading can experience unanticipated failures resulting from fatigue processes that lead to fracture. Identifying susceptible components, understanding material behavior, and mitigating fatigue damage risk factors are important in the design of steel structures subjected to repeated loading. This Special Issue of Metals covering current advances related to the fatigue behavior of structural steel materials seeks to improve understanding of both high-cycle and low-cycle fatigue processes in structural steels, as well as the resulting effects on structural performance. Research into the fatigue behavior of steel materials, fatigue-life prediction approaches for structural steel components, and fatigue mitigation strategies for steel structures are especially welcome.

Sincerely,

Dr. Gary Prinz
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Metals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Fatigue
  • Fatigue-life prediction
  • Low cycle fatigue
  • Ulta low-cycle fatigue
  • High cycle fatigue
  • Steel materials
  • Fracture

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Published Papers (2 papers)

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Research

13 pages, 21850 KiB  
Article
Ultra Low-Cycle Fatigue Behavior Comparison between Additively Manufactured and Rolled 17-4 PH (AISI 630) Stainless Steels
by David Gonzalez-Nino, Timothy Strasser and Gary S. Prinz
Metals 2021, 11(11), 1726; https://doi.org/10.3390/met11111726 - 28 Oct 2021
Cited by 4 | Viewed by 2878
Abstract
This study investigates the mechanical behavior of additively manufactured (AM) 17-4 PH (AISI 630) stainless steels and compares their behavior to traditionally produced wrought counterparts. The goal of this study is to understand the key parameters influencing AM 17-4 PH steel fatigue life [...] Read more.
This study investigates the mechanical behavior of additively manufactured (AM) 17-4 PH (AISI 630) stainless steels and compares their behavior to traditionally produced wrought counterparts. The goal of this study is to understand the key parameters influencing AM 17-4 PH steel fatigue life under ULCF conditions and to develop simple predictive models for fatigue-life estimation in AM 17-4 steel components. In this study, both AM and traditionally produced (wrought) material samples are fatigue tested under fully reversed (R = −1) strain controlled (2–4% strain) loading and characterized using micro-hardness, x-ray diffraction, and fractography methods. Results indicate decreased fatigue life for AM specimens as compared to wrought 17-4 PH specimens due to fabrication porosity and un-melted particle defect regions which provide a mechanism for internal fracture initiation. Heat treatment processes performed in this work, to both the AM and wrought specimens, had no observable effect on ULCF behavior. Result comparisons with an existing fatigue prediction model (the Coffin–Manson universal slopes equation) demonstrated consistent over-prediction of fatigue life at applied strain amplitudes greater than 3%, likely due to inherent AM fabrication defects. An alternative empirical ULCF capacity equation is proposed herein to aid future fatigue estimations in AM 17-4 PH stainless steel components. Full article
(This article belongs to the Special Issue Fatigue Behavior of Structural Steel)
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15 pages, 4156 KiB  
Article
Influence of Austempering Temperatures on the Microstructure and Mechanical Properties of Austempered Ductile Cast Iron
by Regita Bendikiene, Antanas Ciuplys, Ramunas Cesnavicius, Audrius Jutas, Aliaksandr Bahdanovich, Dzianis Marmysh, Aleh Nasan, Liudmila Shemet and Sergei Sherbakov
Metals 2021, 11(6), 967; https://doi.org/10.3390/met11060967 - 16 Jun 2021
Cited by 17 | Viewed by 4148
Abstract
The influence of the austempering temperatures on the microstructure and mechanical properties of austempered ductile cast iron (ADI) was investigated. ADI is nodular graphite cast iron, which owing to higher strength and elongation, exceeds mechanical properties of conventional spheroidal graphite cast iron. Such [...] Read more.
The influence of the austempering temperatures on the microstructure and mechanical properties of austempered ductile cast iron (ADI) was investigated. ADI is nodular graphite cast iron, which owing to higher strength and elongation, exceeds mechanical properties of conventional spheroidal graphite cast iron. Such a combination of properties is achieved by the heat treatment through austenitization, followed by austempering at different temperatures. The austenitization conditions were the same for all the samples: temperature 890 °C, duration 30 min, and quenching in a salt bath. The main focus of this research was on the influence of the austempering temperatures (270 °C, 300 °C, and 330 °C) on the microstructure evolution, elongation, toughness, and fatigue resistance of ADI modified by certain amounts of Ni, Cu, and Mo. The Vickers and Rockwell hardness decreased from 535.7 to 405.3 HV/1 (55.7 to 44.5 HRC) as the austempering temperature increased. Optical images showed the formation of graphite nodules and a matrix composed of ausferrite; the presence of these phases was confirmed by an XRD diffraction pattern. A fracture surface analysis revealed several types of the mechanisms: cleavage ductile, transgranular, and ductile dimple fracture. The stress-controlled mechanical fatigue experiments revealed that a 330 °C austempering temperature ensures the highest fatigue life of ADI. Full article
(This article belongs to the Special Issue Fatigue Behavior of Structural Steel)
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