Roughness Evolution and Indentation Size Effect in Superficial Layers under Plane Fatigue Loading

Abstract:

The paper presents some results about changes in integrity state of metal surface processed at different roughness levels subjected to fatigue plane bending tests. Experimental tests show that during fatigue process there are micro-geometrical changes related to local plastic deformations which can be evidenced by micro-hardness modifications and indentation size effect, ISE. ISE can be a quantitatively and qualitatively factor for characterize fatigue behavior of a metallic surface.

• Periodical: Advanced Materials Research (Volumes 875-877)
• Pages: 542-546
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.875-877.542
• Online since: February 2014
• Authors: Valentin Mereuta*, Minodora Rîpă, Liviu Palaghian
• Keywords: Fatigue, Indentation Size Effect, Microhardness, Surface Roughness (SR)

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