ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract The deformation dynamics in uniaxial tension of c-axis sapphire were investigated at temperatures from 1600 to 1850° C in constant strain-rate tests from 0.00007 min−1 to 0.0036 min−1. The activation parameters are consistent with thermally-activated overcoming of the Peierls barrier as the rate-controlling process for flow. From SEM, TEM, and HVTEM examinations of deformed specimens it is deduced that the active slip plane is of the {¯4223}-type. The dislocation structure suggests that the 〈0 ¯110〉 directions are the most likely slip directions.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00540414
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