Fatigue and Fracture in Steels
A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metal Failure Analysis".
Deadline for manuscript submissions: closed (31 August 2023) | Viewed by 5136
Special Issue Editor
Interests: design; metals; mechanical properties; characterization
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleagues,
The mechanisms of failure in steels comprise an ever-relevant, multifold topic that concerns the design of thermomechanical/shaping routes and the in-service/maintenance conditions of structural and mechanical components. Fatigue failure as a consequence of the damage caused by variable loading and/or fracture occurring under the effect of excessive loads are phenomena that involve the geometry and surface quality of the component, the presence of residual stresses, the cleanliness of the steel, and the microstructure. Particularly, the role of the microstructure in damage generation, crack initiation, and crack propagation is a key factor for consideration during the development of novel steels, either by conventional processes or by other approaches, such as additive manufacturing. It is well known that the fatigue performance of high-strength steels does not improve proportionally to their hardness. In all cases, there may be an intrinsic correlation between the local microstructure and flaws or surface geometric features in the vicinity, affecting the stress state, which is sometimes disregarded. This is generally the case when high and very high cycle fatigue apply, which is important to study, among others, for applications, where the component is subjected to contact–rolling fatigue, such as the multipliers in next-generation wind turbines or high-speed rail systems. Additionally, an unresolved “hot topic” is the hydrogen-embrittlement phenomenon; advances in understanding of this phenomenon can propel the design of new high-strength steels and trigger the implementation of novel steels within the context of a near-future hydrogen-based economy.
Contributions on the influence of microstructures on fatigue and fracture in steels are invited to this Special Issue. Works within the frame of the development of novel steels and/or the use of challenging manufacturing processes, devoted to the study of the hydrogen-embrittlement phenomenon, or aligning with the “infinite-life” philosophy, are encouraged for submission.
Dr. Lucia Morales-Rivas
Guest Editor
Manuscript Submission Information
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Keywords
- fatigue
- fracture
- crack initiation and propagation
- hydrogen embrittlement
- steel
- microstructure
