Additively Manufactured Alloys: From Design and Microstructure to Fatigue Performance
A Special Issue of Crystals (ISSN 2073-4352) belonging to the section "Crystalline Metals and Alloys".
Deadline for manuscript submissions: 20 March 2027 | Viewed by 184
Editors
Interests: additive manufacturing; material design; superalloys; material characterization; mechanical properties; direct energy deposition; laser powder bed fusion; high-entropy alloys
Special Issues, Collections and Topics in MDPI journals
Interests: anti-fatigue manufacturing technology; materials and structural strength; digitalization and service life evaluation
Interests: laser cladding; wear resistance; corrosion resistance; Fe-based alloy; machine learning
Interests: mechanical properties; mechanical testing; metal forming; plasticity; processing of materials; additive manufacturing; metal cutting
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleagues,
Additive manufacturing has emerged as a transformative technology for producing advanced metallic alloys, offering unparalleled design freedom and the capability to fabricate complex geometries previously unattainable through conventional methods. The design of novel material systems, particularly high-entropy alloys and functionally graded materials, coupled with precise control over microstructural evolution, forms the cornerstone of this technological revolution. However, the successful transition of additively manufactured alloys into safety-critical engineering applications is largely dictated by their fatigue performance. The inherent thermal cycling and rapid solidification characteristics of additive manufacturing processes result in distinctive microstructural features, including fine cellular dendrites, anisotropic grain structures and process-induced defects such as porosity and lack-of-fusion flaws. These factors collectively govern crack initiation and propagation mechanisms under the cyclic loading process. Consequently, establishing a comprehensive processing–structure–fatigue relationship is paramount. By integrating innovative alloy design strategies with optimized printing parameters such as laser power, scanning strategy and thermal post-treatment, researchers can tailor microstructures that enhance damage tolerance and mitigate defect sensitivity. Furthermore, the integration of multiscale simulation and artificial intelligence-driven models is accelerating the prediction of fatigue life and the identification of optimal processing windows. Through systematic mechanical characterization, including high-cycle and low-cycle fatigue testing, alongside advanced fractographic analysis, the materials community is elucidating the fundamental structure–property linkages unique to these alloys. This Special Issue aims to bridge the gap between fundamental material design, microstructural engineering and long-term mechanical reliability. It seeks to highlight cutting-edge research that advances the understanding and optimization of fatigue behavior in additively manufactured alloys, together with the underlying materials design and microstructural characterization that govern it, for demanding industrial applications.
Dr. Liyi Wang
Dr. Jianzhi Chen
Dr. Fanmin Shang
Dr. Umberto Prisco
Guest Editors
Manuscript Submission Information
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Keywords
- additive manufacturing
- alloy design
- microstructure evolution
- damage tolerance
- defect sensitivity
- process–structure–fatigue property relationships
- fatigue performance
- fatigue fracture
- anti-fatigue design
- faitgue life
- life prediction
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