title: Mapping the 3D-surface strain field of patterned tensile stainless steels using atomic force microscopy.
abstract: 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.
authors.affiliation: LRRS, UMR 5613 CNRS-Université de Bourgogne, BP 47870, 21078 Dijon, France. vvignal@u-bourgogne.fr
authors.forename: Vincent
authors.initials: V
authors.lastname: Vignal
authors.forename: Eric
authors.initials: E
authors.lastname: Finot
authors.forename: Roland
authors.initials: R
authors.lastname: Oltra
authors.forename: Yvon
authors.initials: Y
authors.lastname: Lacroute
authors.forename: Eric
authors.initials: E
authors.lastname: Bourillot
authors.forename: Alain
authors.initials: A
authors.lastname: Dereux