SCIENTIFIC ABSTRACT TARASOV, A.M. - TARASOV, B.M.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R001754920010-2
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: July 16, 2001
• Sequence Number: 10
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

GOV/129-58-9-9/16
Carburizatiori Temperature
The Possibil-1-ty of Increasin~: th8
Inside a Solid Carburizer to 980 C
Card 2/4
mamufactured coE.,quonents indicates tht-tt as rei~ards
hardness, the denth of ~he ctse h~lrdened layer -ind
viarpinr, of the co,Uponents, carburiza~ion at 9506C does
not differ froin that effected at 910 C. In the
experiments desc:ribed in this paBer the carburization
temperature was increased to 980 0. Investi6ation of
the quality of the carburized layer and determination
of the mechanical properties was effected on specimens
of the steels 20KhGR, 20KhMA, 20Kh- and 20 for which the
0, Ma, Cr contents ,:.nd the silze of the austenite grains
ara entered in Table 1. The inve c; tiea 1-. ions viere
extended to comporiento (gear, cain) wbic)i were case,
hardened to depths of 1, 1.4 and 1.6 miri. 'A's EL
carburizing agent a mixture of a solid (peat) carturizer
with an addition of 20% fresh carburizLn,;~, Lwaterial vias
used; the content of bariui-a carbonate in the viorkinE;
mixture was 3.4 to 5.1%. Particular attention was
devoted to the deforml-ttiori v.jhich was verified on the
highest stresF~erl and iiost complicated components; t~-Ieso
measurements were carried out under the- tuidwice of

SOV/129-53-9-9/16
The Possibility of IncreasinE thg Carburization Temperature
Inside a Solid Carburizer to 980 C
A. A. Shlyapnikov. The results obtained for specimens
which were incorrectly case hardened and for specimens
after carburization, hardening after reheating and
low temperature teLapering are entered in Table 2 and
these show that the strength, toughness, ductility
and surface hardness of the npecimens do not deteriorate
as a r8sult of increasing -the carburization temperaWre
to 980 C. The results obtained for a cross piece of a
motor car differential and for gear teeth are also
graphed. The obtained results have shown that
provided a second heaUng prior -to hardening is applied,
it is recommended to ca6burize components inside a
solid carburizer at 980 C; the quality of -the case
hardened layer as re6ards carbon content and its
distribution improves and the static strength of the
components does not decrease. ~he productivity of the
process of carburization at 980 C is 40 to ~0% higher
Card 3/4 than for a carburization teuriperature of 910 C and

LGOV/ 129- 58-913-91/ 16
The Possibility of IncreasinE the Carburization Te=er~-~t,,r-,e
Inside a Solid. Carburizer to 980,c
15% higher thwi for a carburiz-3tion te;uperature of 9500C.
The-re are 4 fiL~ures, 2 tables ,2sid 2 Sovi3t references.
ASSOCIATION: Gor'kovslciy avtomobilliiy-;- zavod
(GorkiyAutomobile Plant)
1. Steel-Ifardening 2. Gralm (MetallurWj)--Growth
Card 4/4

L
Tq (~ 19
AUTHOR: Tarasov, A.M., Candidate of Technical Sciences.
TITLE: Influence of Boron on the Kinetics of the Growth of the
t.L
Austenite Grain and on the Size of the Real Grain (V~-1yar-'j-e
bora nit kinetiku rosta zerna austenita i velichinu deystvit-
ellnogo zerna)
PERIODICAL: Metallovedeniye i Obrabotka Metallov, 1958, Tio.1,
pp. 17 - 20 (USSR)
ABSTRACT: A new, case-hardening chromium-manganese steel was intro-
duced in the Gorki Automobile Works which is alloyed with small
admixtures of boron. The steel possesses high-strength
characteristics and satisfactory technological properties. A
part of the components produced from this new steel is subjected
to gas cementation and quenching directly in oil. Therefore,
the austenite grain in this steel should have a reduced tendency
to grow during heat treatment. Owing to the contradictory
views of various authors on the influence of boron on the
growth of the austenite grains, the solution of a number of
technological problems of heat treatment has become more
complicated in the case of boron steels. Therefore, the autho---
was interested in studying the kinetics of growth of the
Cardl/4 austenite grain in boron-containing steel. The experiments

120-1-4/14
Influence of Boron on the Kinetics of the Growth of the Austenite
Grain and on the Size of the Real Grain.
were effected on steels smelted in a laboratory induction
furnace of 100 kg capacity with a basic linint. and using
rejects of high-grade steels and ferro-allOYB as the charge.
Slag (50016 CaO, 50% CaF2) was introduced to an extent of 3-4%
of the total weight of the melt and the steel was kept
under the slag for 30 to 40 min. Deoxidation was by means of
aluminium, and by ferro-silicon. The boron was introduced as
ferro-boron which contains 12.?Yo B, 12.72% Al and 1.150/6' Si.
The required quantity of ferro-boron was introduced into the
tundish after fillingit-ba]f with steel. The experimental inSots
were forged into square rods of 16 x 16 mm, and then annealed. The
grain owas revealed by means of cementation at 920, 1 000 and
1 100 C for heating durations of 5, 10 and 20 hours. The case-
hardening was effected in a peat carburiser containing barium
earbonate. The chemical comDositions of the steels of the
experimental ingots of vo.1 smelting and the austenite grain
size are entered in Table 1. Tdie 2 shows the dependence of
the aiEtenite grain size on the boron addition and the cement-
ation regime. The chemical composition of the ingots of vo.2
Card2/4smelting are entered in Table 3. The graphs, Figs. 1 - 3s show

129-1-4/14
Influence of Boron on the Kinetics of the Growth of L'_-e
Grain and on the Size of the Real Grain.
the deperdence of the austenite grain size on the annealinf. time
during cementation ang the boron content for teMDeratures of
9207 1 000 and 1 100 0, respectively. The character of the 0
micro-structure of sp8cimens after hardening in oil from 8?0 C
and tempering at 200 C is reproduced in Fig.4. It is concluded
that the optimum boron content which does not bring about a
growth in the austenite grain size in the chromium-manganese
steel 20Xrre for the case of ordinary chemical-heat treatment is
0.0015 to 0.003%. Heating of ste8l containing such boron
quantities for 20 hours at 1 000 C did bring about a growth of
the austenite grains; an appreciable grain growth can be
detected by using steel with an initial austenite grain size
8 - 6 balls. A boron content of 0.005916 is undesirable and 0.060/66
and above is inadmissible due to intensive grain growth under
practical. conditions of chemical-heat treatment; durinE heat
treatment of boron, it must be taken into account that there ~!,,ill
be some coarsening of the grain if the boron content is 0.004%
and higher. After hardening and low temperature tempering,
boron steel has a clearly-pronounced aciculax structure which
. particularly intensive in the case of boron contents above
Card3/4's
0.003%.

120/--'-4,/14
Influence of Boron on the Kinetics of the Growth of the Auote.,Ae
1, L.
Grain and on the Size of the Real Grain.
There are 4 figures and 3 tables and 8 references, 5 of which
are Slavic. .
ASSOCIATION: Gorki Automobile Works (Goi~kovskiy Avtozavod)
AVAILABLE: Library of Congress.
Card 4/4

SOV1129-501-'F 11/1-
AUTHOR: A.M. Tarasov. Gandidata of Teohnir:al S---fenneZ
TITLE., Influence of Boron on the Temper Brittleness of
Constructional Steel (Vliyaniye bora na khr-UP110-St-
otpuske konstruktsionnoy stali)
PERIODICAL: Metallovedeniya i TermiCheskaya Obrabotka Ketailo-:-~
1959, Nr Pp 5+-57 (USSR)
ABSTRACT: As a starting material for the inqestigations, stee-t was
used from three series of melts produ-ed in a lab-Dial-olry
induction fur,nac.-:-- of 100 kg capacity, The c.,hemi-al
analyses as well as the respecA'ilre austenite gg,-~ain -z.:izr-2
are entered in a table cn page 54-, In Fig 1 the
dependence of the impact strength on the tempering
temperature is graphed.. The graph in Fig 2 shows "Itie
positive influenei~ of small additions of bororl on
reducing the tendency of the steel to develop
temper brittleness (fall line curves refer, to stec-L
without boron addition, broken line curvEis refe.-r to
with an addition of 0.003% boron). In Fig 3 the impa,%t
strength of notched specimens as a functi.-on of the
Card 1/2 tempering temperature is graphed for steel vithoul: boron
and for steels with various boron additions, On ilie ta!~is

SOV/129-59-5-13/17
Influence of Boron on the Temper Brittlenesz of Constructional Steel
U
of the obtained results it is concluded that small
additions of boron do not bring about type I irrever.-
sible temper brittleness. Optimum quantities of boron
(about 0.003%) have a favourable effect and redu3a the
proneness of the steel to develop irreversible temper
brittleness. However, if the steel contains 0 003,
n o r
more boron the tendency of the steel to develop
reversible temper brittleness increases.
Card 2/2 There are 3 figures, 1 table and 11 references, 10 of
which are Soviet and 1 English.
ASSOCIATION: Gorlkovskiy Avtomobillnyy Zavod (Gorlkiy
Automobile Works)

TARASOV, A.M.-Darasau, A.M.]
In 1960. Rab. i sial. 35 no.12:2 D 159 (MIRA 13:3)
1. Predsedatell Sovnerkhoza BSSR.
(White Rassia--Industries)

TARASOV, A. M., Cand Tech Sci -- (diss) "Research and choice of opt-
imal phases of gas distribution in four-cycle diesel engines." Xhar'-
kov, 1960. 16 pp with graphs; (Ministry of Railroads USSR, Khar'kov
Inst of Railroad Iransport Engineers ini "S. M. Kirov); 150 copitz; free;
(KL, 18-60, 153)

'--ARAW, A.M.# Insho
Some probjeaw relative to investigating the filling of Internal-
combustion engines. Trudy KKIIT n0-35:76-84 l6o. (MIRA 13:10)
(Gas and oil engines)

TARASOV, A.M., inzh. ; MISHC 0, P,P.. inzh.
Coneimption facto- of the intake OYBtens of motors. Inergo-
mashtnostroenis 6 no.2:15-17 F 160. (MIRA 13:5)
(Gas and oil engines)

I
19 .115D
AUTHOR:
TITLE:
PERIODICAL:
14~(o
S/133/61/000/001/012/016
A054/AO33
Tarasov, A.M., Candidate of Technical Sciences
The Practice of Using Cemented 20)(r P (2OKhGR) Grade Boron Steel
in the Manufacture of Car Parts
Stal', 1961, No. 1, pp- 64 - 68
TEXT: At the Gorlkovskiy avtomobillnyy zavod (Gor'kiy Automobile Plant)
ttie heavy-duty car parts were produced from 20)(NM (20KhNM) grade nickel-molybden-
um steel, developed from the 15H M(15NM) and 20HM(20NM) steels, similar in com-
position to the 4615-4620 type steels used by American firms. Since the 2OKhNM
type steel contains as much as 1.65 - 2.0% Ni and 0.2 - 0.3% Mo, attempts were
made in the GAZ to replace this kind of steel by structural steels not containing
nickel and molybdenum, but alloyed with boron. The tests resulted in the develop_
ment of a new brand of steel: (20KhGR) the composition of which Is as follows:
r Mn .011 P R 'or Ni Mn B
20KhGR 0.17-0-24 0.7-1.0 0.17-0.37