caa a22 4500 463226623 CHVBK 20180405153229.0 cr unu---uuuuu 170326e20070201xx s 000 0 eng 10.1007/s10853-006-0007-x doi (NATIONALLICENCE)springer-10.1007/s10853-006-0007-x Analysis of dislocation mechanisms around indentations through slip step observations [Elektronische Daten] [K. Nibur, F. Akasheh, D. Bahr] Atomic force microscopy has been used to study slip step patterns, which form around indentations in FCC alloys. These patterns form in a consistent and repeatable manner. From these observations it has been determined that slip steps increase in height only in the outer region of the plastic zone leading to the cessation of their growth as the plastic zone expands outward. Electron backscatter diffraction techniques are used to map grain orientation and the effect of different surface orientations as well as different tip geometries on slip step behavior is explored. Changes in resolved shear stress on different slip planes can be observed qualitatively from changes in the slip step patterns as surface orientation and tip geometry are varied. Pile up is shown to form above the regions with the largest amounts of strain downward into the bulk. Changes in slip step patterns can be predicted based on changes in resolved shear stress. Discreet dislocation dynamics simulations have been performed to support these observations. Springer Science+Business Media, Inc., 2007 Nibur K. Mechanical and Materials Engineering, Washington State University, PO Box 642920, 99164-2920, Pullman, WA, USA aut Akasheh F. Mechanical and Materials Engineering, Washington State University, PO Box 642920, 99164-2920, Pullman, WA, USA aut Bahr D. Mechanical and Materials Engineering, Washington State University, PO Box 642920, 99164-2920, Pullman, WA, USA aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/3(2007-02-01), 889-900 0022-2461 42:3<889 2007 42 10853 https://doi.org/10.1007/s10853-006-0007-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0007-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nibur K. Mechanical and Materials Engineering, Washington State University, PO Box 642920, 99164-2920, Pullman, WA, USA aut NATIONALLICENCE 700 1- Akasheh F. Mechanical and Materials Engineering, Washington State University, PO Box 642920, 99164-2920, Pullman, WA, USA aut NATIONALLICENCE 700 1- Bahr D. Mechanical and Materials Engineering, Washington State University, PO Box 642920, 99164-2920, Pullman, WA, USA aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/3(2007-02-01), 889-900 0022-2461 42:3<889 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer