Mechanical Properties of Thin Films and Coatings

Nanostructured thin films are described in this chapter. The available processing routes are shown. The mechanisms of nanocrystalline grain formation are underlined. The different mechanical behavior of thin films due to the reduced thickness and the conf

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Fatigue and Fracture of Nanostructured Materials

Fatigue and Fracture of Nanostructured Materials

Pasquale Cavaliere

Fatigue and Fracture of Nanostructured Materials

Pasquale Cavaliere Department of Innovation Engineering University of Salento Lecce, Italy

ISBN 978-3-030-58087-2 ISBN 978-3-030-58088-9 https://doi.org/10.1007/978-3-030-58088-9

(eBook)

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Preface

Nanostructured materials represent a possible alternative for a broader range of applications, outperforming many of today’s engineering materials. As new nanomaterials are rapidly developing and many applications exist, mainly within fields such as medicine, communication, consumer goods, and engineering, it is necessary to identify what special properties this fairly new material group can offer. All engineering materials based on nanotechnology, involving the understanding of physical properties and how they change with material dimensions, are to be considered alternatives in existing products. Metals with a grain size in the range of 100–1000 nm are classified as ultrafine grain; grain sizes less than 100 nm are considered to be in the nanocrystalline domain. The altered response of such properties is a direct consequence of the nanoscale microstructural arrangements of the atoms themselves. Regarding engineering design, these metals pose significant promise as next-generation structural materials due to reported increases in ultimate strength, resistance to fatigue, and wear resistance. The abnormally high volume fractions of noncrystalline material exaggerate the importance of the grain boundaries, ultimately leading to a shift in the physica