Atomic Force Microscopy Study of the Early Fatigue Damage

Jaroslav Polák; Jiří Man; Karel Obrtlík

doi:10.4028/www.scientific.net/MSF.482.45

Paper Titles

A Model for Crack-Induced Nucleation of Dislocations, Complex Stacking Faults and Twins
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Ideal Strength of Nano-Components
p.25

Theoretical Strength of Metals and Intermetallics from First Principles
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Nanoscale Measurement of Stress and Strain by Quantitative High-Resolution Electron Microscopy
p.39

Atomic Force Microscopy Study of the Early Fatigue Damage
p.45

Mechanical Response of Semi-Brittle Nano Particles under an Imposed Cyclic Field
p.51

Prediction and Control of Grain Boundary Fracture in Brittle Materials on the Basis of the Strongest-Link Theory
p.55

Anisotropic Behaviour of Grain Boundaries
p.63

Plasticity of Copper with Small Grain Size
p.71

HomeMaterials Science ForumMaterials Science Forum Vol. 482Atomic Force Microscopy Study of the Early Fatigue...

Atomic Force Microscopy Study of the Early Fatigue Damage

Abstract:

The possibilities of atomic force microscopy in studying surface features and early fatigue damage in materials are reviewed. Examples of a true relief arising on the surface of cyclically strained materials as recorded by atomic force microscopy are given. Characteristic features of the surface relief are well-defined persistent slip markings consisting of extrusions and intrusions. The shape of extrusions and intrusions can be obtained by observation of metal surface and replicas and in combination with high resolution scanning electron microscopy. The growth of extrusions during fatigue life is reported for austenitic and ferritic stainless steels. The experimental data are compared with models of the localized cyclic plastic straining and predictions of the fatigue crack nucleation models.

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Periodical:

Materials Science Forum (Volume 482)

Pages:

45-50

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.482.45

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Online since:

April 2005

Authors:

Jaroslav Polák, Jiří Man, Karel Obrtlík

Keywords:

Atomic Force Microscope (AFM), Extrusion, Fatigue Damage, Intrusion

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