Simulation of the free surface deformation due to subsurface dislocations arranged in trigonal networks

• Published in: Materials science & engineering. A, Structural materials : properties, microstructure and processing Vol. 297; no. 1; pp. 286 - 289
• Main Authors: Bonnet, Roland, Youssef, Sami Ben, Fnaiech, Mustapha
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15.01.2001; Elsevier
• Subjects: Applied sciences; Condensed matter: structure, mechanical and thermal properties; Defects and impurities in crystals; microstructure; Exact sciences and technology; Indirect evidence of dislocations and other defects (resistivity, slip, creep, strains, internal friction, epr, nmr, etc.); Metals. Metallurgy; Physics; Simulation; Structure of solids and liquids; crystallography; Subsurface dislocation; Surface deformation; Simulation; Surface deformation; Subsurface dislocation; Misfit dislocations; Nickel alloys; Digital simulation; Dislocation structure; Displacement field; Free surface; Experimental study; Close packing; Binary alloys; Platinum base alloys; Elasticity theory; Subsurface; Transition element alloys
• ISSN: 0921-5093; 1873-4936
• DOI: 10.1016/S0921-5093(00)01698-1

A procedure based on elasticity calculations is proposed to investigate the deformation of the free surface of a close-packed crystal when a trigonal misfit dislocation network lies just a few atomic monolayers below the surface, as observed for some reconstructed surfaces in noble metals or epitaxial systems. The network has open nodes limited by edge Shockley dislocations.