Dislocation Dynamics in Icosahedral Al-Pd-Mn Single Quasicrystals
Keyword(s):
AbstractThe paper reviews results from in situ straining experiments on Al-Pd-Mn single quasicrystals in a high-voltage electron microscope. Slip planes were determined from the orientation and width of slip traces. Dislocations are generated by a specific cross slip mechanism. On some slip traces, dislocations move at two distinctly different velocities. A stress exponent was determined on a single dislocation by observing its displacement under decreasing load. The in situexperiments reveal the behaviour of individual dislocations in a temperature range where the deformation of bulk specimens is strongly affected by recovery.
2001 ◽
Vol 203
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pp. 68-71
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1978 ◽
Vol 36
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pp. 68-69
1993 ◽
Vol 76
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pp. 3163-3166
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1982 ◽
Vol 20
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pp. 117-131
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