Fundamental relationships between deformation-induced surface roughness, critical strain localisation and failure in AA5754-O

• Published in: Philosophical magazine (Abingdon, England) Vol. 89; no. 27; pp. 2403 - 2425
• Main Authors: Stoudt, Mark R., Hubbard, Joseph B.
• Format: Journal Article
• Language: English
• Published: Abingdon Taylor & Francis Group 21.09.2009; Taylor & Francis
• Subjects: aluminium alloys; Condensed matter: structure, mechanical and thermal properties; Exact sciences and technology; information theory methods; Lattice dynamics; Mechanical and acoustical properties of condensed matter; mechanical behaviour; Mechanical properties of solids; Phonons and vibrations in crystal lattices; Physics; plastic deformation; polycrystalline metals; sheet metal forming; Thermal properties of condensed matter; Thermal properties of crystalline solids; Thermodynamic properties; topological analysis; Tribology and hardness; Autocorrelation function; Vibrational modes; Roughness; Surface deformation; Eigenvalues; Stress effects; Entropy; Thermodynamic properties; Precipitates; Precursor; Surface stresses; Tribology

This research employs two approaches to characterise the apparent structure observed in localised strain maps constructed from surface topography data acquired from AA5754-O sheet stock that was deformed in three in-plane stretching modes. The first uses a conventional two-point autocorrelation func...