Ultrasonic Surface Modification for Mechanical Property Enhancement
Summary
Ultrasonic surface modification encompasses a suite of mechanical surface treatments that employ high-frequency ultrasonic vibrations superimposed on controlled contact loads to tailor the near-surface microstructure and residual stress state of engineering components. By inducing severe plastic deformation (SPD) at ultrahigh strain rates, these techniques generate gradient nanostructured layers, refine grains and introduce compressive residual stresses. Such modifications lead to pronounced increases in surface hardness, fatigue life, wear resistance and corrosion performance without impairing bulk properties. Ultrasonic techniques—including ultrasonic surface rolling, ultrasonic nanocrystal surface modification and ultrasonic surface burnishing—have been applied successfully to a broad range of alloys—from aluminium and titanium to stainless steel and copper—finding global applications in aerospace, automotive, biomedical and energy sectors. The capacity to produce a controlled hardening depth, inhibit crack initiation and propagation, and enhance adhesion and fretting performance renders ultrasonic surface modification a versatile and scalable approach for extending service life and reliability of critical components.
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Ultrasonic Surface Modification for Mechanical Property Enhancement publication trend
The graph below shows the total number of articles in ultrasonic surface modification for mechanical property enhancement across all publications each year (not limited to Nature Index journals).
Technical terms
Severe plastic deformation (SPD): A high-strain mechanical process that refines grains in the near-surface region by imposing large plastic strains without significant change to component geometry.
Gradient nanostructured (GNS) layer: A surface layer characterised by gradually changing grain sizes from the nano- to microscale, enhancing mechanical gradient properties.
Compressive residual stress: A state of internal stress induced beneath the surface that impedes crack initiation and growth, improving fatigue performance.
Ultrasonic surface rolling process (USRP): A surface treatment combining ultrasonic impact peening with rolling to induce severe plastic deformation and refined microstructures.
Ultrasonic nanocrystal surface modification (UNSM): A technique using a vibrating hard tip to impart SPD, creating nanocrystalline surface layers with superior mechanical properties.
References
- Research on the mechanism of the two-dimensional ultrasonic surface burnishing process to enhance the wear resistance for aluminum alloy. Friction (2023).
- Ultrasonic Nanocrystal Surface Modification: Processes, Characterization, Properties, and Applications. Nanomaterials (2022).
- Ultrasonic Surface Rolling Process: Properties, Characterization, and Applications. Applied Sciences (2021).
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