SCIENTIFIC ABSTRACT KRIVOGLAS, M.A. - KRIVOKHATSKIY, A.S.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000826530001-6
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Sequence Number: 1
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

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3/185/63/008/002/00t/d'
D:!34/D308
AUTHOR s Krivoglaz, M. A.
TITLE: Theory of the scattering of x rayu and neutrons by
ordered alloye
P:l,,R !ODIGAL sUkrayin0kyy fizychtLyy zhurnav,,- v. ~3, no. 2, 1963,
9 4 U A
A rcvi~w of literature on the oubjecto I rgely of papers
by Llic auLhor himself (10 in all Thore are 25 references: 17
11 1
;Jovic'U-bloc and 8 zion-Soviet-bloc.
-1 Lj OC- 'I T t) Inutitut,metallofioiki AN USBR (Institute of-Metal
hyijica of the AS UkrSSH)f Kiev
Gard 1/1

_,_A.A,.; TIKHOSOVA, Ys.A.
I
Theory of the Debye thermal factor in solid solutions* Ukr, fi2a
shur, 8 no.2oWA-~51 F 163. (KIRA 1632)
1. Institut mstallofisiki AN UkrSSR, Kiyev.
(Alloys.-Thermal proparties)

5/126/63/ol5/ool/002/029
EJ32/Rl35
AUTHORS t rivoklazi MsA*j and 11yaboxhapka, K.P.
'_K
TlTLE s The theory of the scattering of X-rays by crystals
containing dislocations. The case of random
distribution through the crystal of screw and edge
dislocations
PMUOUICALz Fizika metallov i metallovedeniye, v-15, no.1, 1963,
18-31
TEXT: An analysis is made of the scattering of X-rays by
crystals which contain straight screw and edge dislocations. It
is assumed that there is no correlation between the dislocations
and that they run in directions which are characteristic for the
given crystal structure. Displacements at a given point may be
due not only to the nearest dislocations, but to all other
dislocationm. The came in which the mean distance between
dislocations is much less than the dimensionn of the crystal is
studied. It is found that dislocations lead to a Gaussian widening
of the X-ray lines. The line width in powder photographs in
proportional to tan 0 where 2 0 is the angle through which the
Card 1/3

The theory of the scattering of ... 5/126/63/015/001/00Z/029
E132/E135
rays are scattered and depends not only on the length 'but also on
the direction of the corresponding diffraction vector. The
influence of correlations between dislocations is discussed. Other
authors have described In detail the scattering from a crystal with
a single dislocation in a cylindrical block. These results are not
directly applicable to a crystal with many dislocation", as all
dislocations affect the displacement at a given point in the
crystal. The number of dislocations in assumed to be.twa-ch less
than the number of lattice points. A cubic crystal with one atom
per cell is first examined. Eshelby's results are used to describ*
the displacement field around a screw dislocation in au isotropic
continuum.. An expression for parallel dislocations is obtained and
this is extended to the case where there are several Buerger's
vectors in a series of different special directions. 'if all the
dislocations are parallel the spots in reciprocal space become
discs with a Gaussian density distribution;. a b.c.c. crystal in
which the Buerger vectors of the screw dislocations are parallel to
the