International Scientific-Technical and Production Journal
October
2012
# 10
English translation of the monthly «Avtomaticheskaya Svarka» (Automatic Welding) journal published in Russian since 1948
Founders: E.O. Paton Electric Welding Institute of the NAS of Ukraine
International Association «Welding»
Editor-in-Chief B.E.Paton
Publisher: International Association «Welding»
CONTENTS
Editorial board:
Yu. <...> N.Lankin I.K.Pokhodnya
V.N.Lipodaev V.D.Poznyakov
V.I.Makhnenko K.A.Yushchenko
O.K.Nazarenko A.T.Zelnichenko
I.A.Ryabtsev
International editorial council:
N.P.Alyoshin
U.Diltey
Guan Qiao
D. von Hofe
V.I.Lysak
N.I.Nikiforov
B.E.Paton
Ya. <...> Pilarczyk
G.A.Turichin
Zhang Yanmin
A.S.Zubchenko
(Russia)
(Germany)
(China)
(Germany)
(Russia)
(Russia)
(Ukraine)
(Poland)
(Russia)
(China)
(Russia)
SCIENTIFIC AND TECHNICAL
Yushchenko K.A., Romanova V.A., Balokhonov R.R.,
Savchenko V.S., Chervyakov N.O. and Zvyagintseva A.V.
Experimental study and modelling of thermal-deformation
processes occurring in welded joints on nickel superalloys ................... 2
Kasatkin O.G., Tsaryuk A.K., Skulsky V.Yu., Gavrik A.R.,
Moravetsky S.I., Nimko M.A., Strizhius G.N., Terovets N.V.,
Byvalkevich A.I., Nemlej N.V. and Kuran R.I. Welding from one
side of clad piping of nuclear power plants .......................................... 10
Kulik V.M., Demchenko E.L., Vasiliev D.V. and Elagin V.P.
Chromium-manganese consumables for welding of higherstrength steels without preheating and heat treatment ......................... 15
Dmitrik V.V. and Syrenko T.A. To the mechanism of diffusion
of chromium and molybdenum in the metal of welded joints of
steam pipelines .................................................................................. 20
Promotion group:
V.N.Lipodaev, V.I.Lokteva
A.T.Zelnichenko (exec. director)
Translators:
A.A.Fomin, O.S.Kurochko,
I.N.Kutianova, T.K.Vasilenko
Editor:
N.A.Dmitrieva
INDUSTRIAL
«Binzel Ukraine GmbH» – 15 Years of Development: Interview
with Yu. <...> Structural
transformations were investigated, and thermal-deformation processes in the heat-affected zone (HAZ)
during the welding cycle process were evaluated. <...> The mechanisms of initiation and propagation of hot
cracks in the HAZ metal near the fusion line were determined, and local plastic strains under the thermal
cycle condition were assessed. <...> Evolution of the stress-strain state in the HAZ metal <...>
The_Paton_Welding_Journal_№10_2012.pdf
International Scientific-Technical and Production Journal
October
2012
# 10
English translation of the monthly «Avtomaticheskaya Svarka» (Automatic Welding) journal published in Russian since 1948
Editor-in-Chief B.E.Paton
Yu.S.Borisov V.F.Khorunov
A.Ya.Ishchenko I.V.Krivtsun
B.V.Khitrovskaya L.M.Lobanov
V.I.Kyrian A.A.Mazur
S.I.Kuchuk-Yatsenko
Yu.N.Lankin I.K.Pokhodnya
V.N.Lipodaev V.D.Poznyakov
V.I.Makhnenko K.A.Yushchenko
O.K.Nazarenko A.T.Zelnichenko
I.A.Ryabtsev
CONTENTS
SCIENTIFIC AND TECHNICAL
. and
.
Experimental study and modelling of thermal-deformation
processes occurring in welded joints on nickel superalloys ................... 2
. and
N.P.Alyoshin (Russia)
U.Diltey (Germany)
Guan Qiao (China)
D. von Hofe (Germany)
V.I.Lysak (Russia)
N.I.Nikiforov (Russia)
B.E.Paton (Ukraine)
Ya.Pilarczyk (Poland)
G.A.Turichin (Russia)
Zhang Yanmin (China)
A.S.Zubchenko (Russia)
V.N.Lipodaev, V.I.Lokteva
A.T.Zelnichenko (exec. director)
A.A.Fomin, O.S.Kurochko,
I.N.Kutianova, T.K.Vasilenko
N.A.Dmitrieva
D.I.Sereda, T.Yu.Snegiryova
. Welding from one
side of clad piping of nuclear power plants .......................................... 10
. and
.
Chromium-manganese consumables for welding of higherstrength
steels without preheating and heat treatment ......................... 15
. and
. To the mechanism of diffusion
of chromium and molybdenum in the metal of welded joints of
steam pipelines .................................................................................. 20
INDUSTRIAL
«Binzel Ukraine GmbH» – 15 Years of Development: Interview
with Yu.A. Didus, Director General ....................................................... 25
. Modern methods of welding aluminium alloys to
steels (Review) ................................................................................... 27
. and
. Development of the technology
of manufacturing double-wall welded transformable-shell
structure ............................................................................................. 34
. and
State Registration Certificate
KV 4790 of 09.01.2001
$324, 12 issues per year,
postage and packaging included.
Back issues available.
All rights reserved.
This publication and each of the articles
contained herein are protected by copyright.
Permission to reproduce material contained in
this journal must be obtained in writing from
the Publisher.
Copies of individual articles may be obtained
from the Publisher.
© PWI, International Association «Welding», 2012
. Peculiarities of wear and criteria of repairability of drill
bits with diamond—hard-alloy cutters .................................................... 39
. Thermal spraying of coatings using tips ........................ 44
. and
. Control of formation of
welded joints in ESW (Review) ............................................................. 49
NEWS
6 Years Anniversary of Russian-German Regional Laser
Centres .............................................................................................. 55
International Seminar «Materials Science in EU Projects» ..................... 59
Pub
l
Founders:
E. r
Inte
O
.
Pa iona
a
n
ton Ele
t
ctr
l A
ssocia
t
ic W
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lding Institute
l
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of the
ding»
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Editorial b
o
ard:
NA
S of Ukr
a
ine
isher:
Inte
r
n
a
t
iona
l A
ssocia
t
ion «W
e
l
ding»
u vche
s
h nko V
Sa
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.
A., Roma
.S., Che
novaov N.O
vya
k
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K
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ounc
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a vets
Byval
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yagin
kevich
u
ky S.I., Nimko M.A., St
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A.I., N
yuk A.K
e
., Skuls
N
.
ml
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e
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tsev
a
A.
V
y V.Y G.N., Te
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iusran
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Protokovilov I.V
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Стр.1
EXPERIMENTAL STUDY AND MODELLING
OF THERMAL-DEFORMATION PROCESSES OCCURRING
IN WELDED JOINTS ON NICKEL SUPERALLOYS
K.A. YUSHCHENKO1, V.A. ROMANOVA2, R.R. BALOKHONOV2, V.S. SAVCHENKO1,
N.O. CHERVYAKOV1 and A.V. ZVYAGINTSEVA1
1E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
2Institute of Strength Physics and Materials Science, SB RAS, Tomsk, Russia
Results of experimental and numerical investigations of the processes of deformation and fracture of welded
joints on nickel superalloys under conditions of mechanical and thermal loading are presented. Structural
transformations were investigated, and thermal-deformation processes in the heat-affected zone (HAZ)
during the welding cycle process were evaluated. The mechanisms of initiation and propagation of hot
cracks in the HAZ metal near the fusion line were determined, and local plastic strains under the thermal
cycle condition were assessed. Evolution of the stress-strain state in the HAZ metal was analysed in terms
of physical mesomechanics, and conclusions on the role of grain boundaries in the processes of initiation
and propagation of cracks were made.
Keywords: arc welding, nickel superalloys, welded
joints, thermal loading, inter-grain boundaries, hot
cracks, numerical modelling
Nickel-base superalloys are characterised by high
mechanical properties, but low weldability. They
exhibit sensitivity to hot cracking under the
welding cycle conditions. Experimental data [1—
4] indicate that the thermal cycle of welding
leads to substantial structural transformations of
material in the HAZ adjoining the fusion line.
Mostly hot cracks form in this zone.
To find out causes of hot cracking under the
welding cycle conditions it is necessary to have
a clear idea of the kinetics of the deformation
processes and evolution of the stress-strain state
in different zones of a welded joint. So far the
information available on these phenomena is
scanty, as experimental studies are extremely labour-intensive,
and money- and time-consuming.
This article describes experimental and numerical
studies of the processes of deformation
and fracture of welded joints on nickel alloys
under conditions of thermal loading. Structural
transformations were investigated, thermal-deformation
processes in the HAZ metal during the
welding cycle were evaluated, the mechanisms
of initiation and propagation of hot cracks under
the thermal-force effect conditions were determined,
and local plastic strains in the HAZ metal
in welding of austenitic nickel alloys were assessed
by using experimental methods.
Models of the materials under investigation
were developed by allowing for the internal
2
structure, and the deformation processes under
the thermal cycling conditions were modelled on
the base of the obtained experimental data. Development
of the model of a material provides
for determination of the explicit temperature dependence
of its physical-mechanical properties.
At a level of the polycrystalline structure, the
sources of the concentration of stresses, initiation
of plastic shears and microcracks
boundaries.
are
grain
At the mesoscale level the model described
the grained structure in its explicit form, and
structural transformations fixed in the HAZ metal
during the welding cycle processes were allowed
for through phenomenological dependences
of mechanical properties upon the temperature.
Evolution of the stress-strain state in different
regions of HAZ under the heating—cooling
thermal cycle conditions was investigated numerically.
Investigation
of the deformation processes
and peculiarities of structural transformations
in the HAZ metal under the welding cycle conditions.
Investigations were carried out on nickel
alloy IN738LC. As shown experimentally, phase
transformations of the γ′ + γ → γ → γ + γ′ type
occurs in the HAZ region wherein the propagation
of cracks takes place. Precipitation of the
fine γ′-phase occurs in the HAZ region adjoining
the weld. Size of the γ′-phase particles in the base
metal and HAZ is 0.4—0.9 and 0.05—0.15 μm,
respectively (Figure 1).
© K.A. YUSHCHENKO, V.A. ROMANOVA, R.R. BALOKHONOV, V.S. SAVCHENKO, N.O. CHERVYAKOV and A.V. ZVYAGINTSEVA, 2012
10/2012
Стр.2