Mapping the 3D-surface strain field of patterned tensile stainless steels using atomic force microscopy.

Date publication

juin 2005

Auteurs

Membres identifiés du Cancéropôle Est :
Pr FINOT Eric , Dr BOURILLOT Eric

Tous les auteurs :
Vignal V, Finot E, Oltra R, Lacroute Y, Bourillot E, Dereux A

Lien Pubmed

https://www.ncbi.nlm.nih.gov/pubmed/15850705

Résumé

The quantification of microstructural strains at the surface of materials is of major importance for understanding the reactivity of solids. The present paper aims at demonstrating the potentialities of the atomic force microscopy (AFM) for mapping the three-dimensional surface strain field on patterned tensile specimens. Electron beam (e-beam) lithography has been used to deposit 16 x 16 arrays of gold-squared pads. Monitoring the evolution of such a pattern under applied strain allows to quantify the triaxial strains both at the micro-(plastic) domain and nanoscale (elastic) domain vs. applied strain. The proposed method was applied to stainless steels after 4.5% plastic strain.

Référence

Ultramicroscopy. 2005 Jun;103(3):183-9