SCIENTIFIC ABSTRACT SERGEYEV, G.YA. - SERGEYEV, I.V.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R001548110006-5
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: August 23, 2000
• Sequence Number: 6
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

SOV/69-5-4-4/24
on Uranium-Molybdenum Alloys in Reactor Construction (Survey)
higher temperatures, and high stability of-measurements also
after cyclical thermal treatment.
b) The alloy is especially easily vorked into rods and tubes,
but less well into plates.
c) The application of U-Mo alloys forcibly leads to an increase
of the degree of enrichment of U235.
d) U-Mo alloys can probably be used with good success for fast
reactors.
There are 7 figures, 9 tables, and 18 references, 4 of which
are Soviet.
SUBMITTEDt June 21, 1958
Card 2/2

21(l )
AUTHORS: -Sergeyey, G. Ya, Titova, V. V., SOV/89-5-6-2/25
Savitskiy, Ye. M., Zhultkova, A. A,,
Nikolayeva, Z. P.
TITLE: The Mechanical Properties of Uranium (Mekhanicheskiye
svoystva urana)
PERIODICAL: Atomnaya energiya, 1958, Vol 5, Nr 6, pp 6la-623 (USSR)
ABSTRACT: The test apparatus (iM,- 4:6 with which the hardness of
uranium at increased tempeiature and the expansion of uranium
at increased temperature were investigated in a neutral gas
(argon), are represented by two sectional drawings. Measuring
results are given by a graph. The following details are
mentioned:
The hardness of the uranium decreases with increasing
temperature. If temperature rises up to 60000, hardness
decreases from 350 kg/mm2 to 50 kg/mm2. A regular variation
of hardness in dependence on the carbon content of the uranium
(0-37 to 0.24 ',"'0) was not observed.
The presence of carbon in uranium samples influences outflow
pressure if these samples are pressed in the c4-phase. The
Card 1/3 outflow Dressure increases with an increasing carbon content

The'llechanical Properties of Uranium SOV/89-5-6-21/25
(0.09 to 0,24 %). At 6500C and a degree of deformation o--F'
*75 ~o the outflow pressure increases by about 60 %. For
uranium ~n the 8-phase outflow pressure decreases from
4 kg/mm2 at 8300C to 1.8 kg/mm2 at 10500C.
Ultimate strength and creep strength increase with an increas-
ing carbon content in the uranium. In hot-rolled uranium with
a C-content of 0.01 % ultimate strength is d b = 36 kg/mm2, in
uraniom with 0.24 ';;) C-content db - 52 kg/mm2. The creep
strengths in these cases amount to 23 to 31 kg/MM2.
At. temperatures of from 100 - 1500C all mechanical properties
characterizing the strengths decrease monotonously, whereas
the properties that characterize plasticity increase. For
uranium with 0.12 C-content one finds that at 7500C
(5b = 12 kg/mm2 = 18 % (relative elongation), 'Y = 51
(relative narrowing of the pressed surface), at 6000C
(5 b = 7 kg/mm2, & = 23 %, I = 70' %, and at 8500C 6b
0.8 kg/mm2, d = 31 5, V = 97 %.
F-uranium, which has a volume-centered lattice, has the
highest degree of plasticity. The tetragonal A-uranium is
Card 2/3 inclined to be brittle, and velocity of deformation is more

Tho 11.1echanical. Properties of Uranium SOV/89-5-6-2/2,7
sensitive to temperature. Because of the low symmetry
of the rhombic lattice of cA-uranium, the latter is charac-
terized by sharply marked anisotropic properties. There are
13 figures, 2 tables, and 3 references.
SUB.MITTED: July 16, 1958
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11(6), 216) SOV189-6-3-2129
AUTHORS: Sergeyev, G. Ya., T,*Ltova, V. V,
TITLE- Uranium and Its Alloys (Uran i yego splavy)
PERIODICAL: Atomnaya energiya, 1959, Vol 6, Nr 3, pp 253 - 260 (USSR)
ABSTRACT: This article is a survey which has been compiled primarily
on the basis of the riestern Geneva reports for 19513. The
following reports were used in the compilation of infornation
in the individual fields:
1)The properties of uraniuai monocrystals: Nr 713 and 1258.
2)Structural chan,-,eT. in uranium under thermal treatment:
Nr 713, 2191, 2307.
3)Mechanical pro2erties of uranium at elevated temperatures:
Nr 49, 50, 317., 2307~
Wnfluence of irradi!Ltion upon uraniun:llr 81, 616, 617, 61s,
791, 2191.
5)Uranium alloys: Nr 7151, 1890~ 2043.
6)Modern methods of met-allographical investigation of irradia-
ted and not irradiated uranium: ITr 1855. There are 7
figures and 1 table.
SUKIIT"'Ell: December 25, 1958
I 1~1
Cara ;

PHASE I BOOK EXPLOITATION SOV/5314
Sergeyev, G. Ya.,1 V.V. Titova., and K.A. Borisov
Metallovedeniye urana i nekotorykh reaktornykh materialov (The Metallography
of Uranium and Certain Reactor Materials) Moscow, Atomizdat, 1960. 223 p.
5,000 copies printed.
Ed.: A.I. Zavodchikova. Tech. Ed.: N.A. Vlasova.
I
PURPOSE: This book is intended for scientists and engineers in scientific
research institutes, design and planning organizations, and industrial
enterprises. It may also be used by students taking advanced courses in
higher schools of education.
COVERAGE: The book on the metallography of uranium and reactor materials
contains data taken from Soviet and non-Soviet materials presented at the
Second International Conference on the Peaceful Uses of Atomic Energy
(Geneva, 1958), and from later sources dealing specifically with the
effects of conditions in the active zone of a reactor on the properties
(especially size and structural stability) of uranium, its alloys, and
Card-1/-8-

77
SOV/81-.-8-,D- -~ /30
~ J.
AUTHORS: Boctivar, A. A., Ser,-,eyev, G. Ya., Davydov, V. A.
TITLE: DA'ormationz3 of' Uranium Subjected Sirriultanecuoly to
Th~-?rmal Cycles and Tensile Stresses
PERIODICAL: Atomnaya, energiya, 1960, Vol 8, Nr 2, pp 112-116
(USSR)
ABSTRACT:
7
Method of Investigation. Figure 1 represents the -pecial
device operating Linder vacuum of the order of 10-5 mm Hg.
Temperature control was automatic and the residual de-
f'ormation of' uranium was studied by measuring the .3ize
of the samples after (1) the cyclic thermal treatmmt
,without outside stresses (a freely han-inf, specimeri
of small weight); (2) creep investi,gatlon at the
maximt,Lm cycle temperature for intervals of time
equal to the cyclin-- time in the next part; and (3)
cycling thermal 1-reatm-ent .,,,ith tensile stresses eq.tal
to those in part (2). Sample temperatures were
measured at three points by means of thermocouple
Card 1/8 velded to it. The temperature drop across the sample

Deformations of' Uranluum SubJected 7 72
Simultaneously to Thermal Cycles and SOV,/89-8-2-3/30
Tensile Stresses
was between 5 and 10o C. Under investigation were
:3amp.ies of' granular sheet uranium (rolled In the C_ -
pha:w 1-4-!,f~Loll)w and Iwanium -111ne"Ilt2d In the -phane
recion (randomly oi-lent(.~~d cryotal,;). All oalllple:~ wer".
flat, of' an overall length of' 100 mm (working leng%h,
40 mm; width, 8 nim) Thickness of' the samples A, 13,
C aas 2.3, 2.2, and --'.2 mm respectively. Samples (."ut
Across the Direction of Roll. Tables 1 and 2 sumwtrize
all the results obtained from the cross-cut samplei;.
Samples Cut Along the Direction of Roll. Results are
summarized in Table 3. Samples With Random Orienta-
tions of Crystallites. (See Table 4.) one sees
in all cases that in the case of simultaneous
influtence of cyclic thermal treatment and tensile
stress the-re is a considerable increase of the lenj_-th
-variation of th,~ samples compared to the creep caLi.-;ed
by simple te~nsion. This happens even in cases when
the stress effect and that due to the thermal cycling
The f J c-ur.z~s;
are of opposite oi n. re are 41 tables; 5
and 4 rel'erences, T Soviet, 2 U.K., 1 U.S. The-'U.
h
ind U.S. references are: A. McIntos T Heal, Pa :!r
Card 2A, Nr 49 Submitted by Great Britain to the'second in~~.-rn.

Deformation of Uranium SubJected
Simultaneously to Thermal Cycles and
Tensile Stresses
77238
SOV/89-8-2-3/30
Fig. 1. Diagram of the device: (1) sample (2) molyb-
Card 3/8 denum heater; (3) load; (4) liquid nitrogen trap.

77238, SOV/89-8-2-3/3(,
Table 1. Relationship between constant applied stress
and residual deformation of uraniuiii during cyclic
thermal treatment and after creep tests samples
out crosswise to the direction of rollinj
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Table 2. Relationship conotant app-1-Jej suresE
and residual deformation of rolled uraniwn dur.ng
cyclic thermal treatment and after creep tests
(samples cut crosswIse to the direction of rolling).
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(0/vIal~Ir LIIP6141- -L1O1V6-119'IV - U/,,; ~
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