Single and Double Pile-Up of Dislocations in MgO Crystals
- 1 October 1961
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 32 (10) , 1920-1926
- https://doi.org/10.1063/1.1728263
Abstract
A quantitative analysis has been made of elastic interactions in three types of pile‐up groups of dislocations in MgO crystals; (i) single pile‐up, (ii) double pile‐up on two orthogonal slip planes, and (iii) double pile‐up on two slip planes intersecting at 120°. The equilibrium positions of dislocations in these groups are given. It is found that the stress concentration factor is highest in type (iii) and lowest in type (i). The number of dislocations in the pile‐up groups sufficient to raise the tip stress to 1000σ0 is 1000 in type (i), about 120, determined by extrapolation, in type (ii), and 62 in type (iii).This publication has 11 references indexed in Scilit:
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