Author： Wollgarten Markus Saka Hiroyasu Inoue Akihisa
Publisher： Taylor & Francis Ltd
ISSN： 0141-8610
Source： Philosophical Magazine. A. Physics of Condensed Matter. Defects and Mechanical Properties, Vol.79, Iss.9, 1999-09, pp. : 2195-2208
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Abstract
Icosahedral Al-Pd-Mn single quasicrystals were deformed between room temperature and 400 C by Vickers hardness testing. The surface morphology was investigated by profiling and scanning electron microscopy. Specimens were prepared for cross-sectional observation in transmission electron microscopes using a focused ion beam system. At room temperature, we find a polygrained microstructure which suggests a deformation via grain-boundary glide. At elevated temperatures, fragmentation as well as dislocation formation are observed.
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