Anisotropy of Transient High-Temperature Bending Creep of Single Crystals.

V.P.Matsokin,
 
M.V.Milyi,
 
I.N.Pakhomova,
 
D.V.Matsokin
 

Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2010, #03/04
http://www.materials.kiev.ua/article/1526

Abstract

The orientation dependence of the transient high-temperature creep rate of NaCl and KCl single crystals for non-uniform distribution of stresses is experimentally studied. The anisotropy of high-temperature bending creep of single crystals is explained by a joint analysis of the distribution of bending stresses, the number of possible dislocations providing deformation, the reduced shear stresses causing sliding of dislocations and dislocation structures of single crystals after creep. It is shown that a new sliding system becomes more active with hindered dislocation slip in the easy sliding system beginning from a certain temperature.


ANISOTROPY, CREEP, DEFORMATION, DISLOCATION, STRAIN