ОЦЕНКА ВЛИЯНИЯ СОДЕРЖАНИЯ УГЛЕРОДА И РЕЖИМА

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INFORMATION ABOUT THE PAPER IN ENGLISH
EFFECT OF ANNEALING ON MICROSTRUCTURE AND PROPERTIES OF WELDED JOINTS PRODUCED
BY LASER WELDING OF LOW CARBON STEEL STRIPS
Golubchik E.M., Kopceva N.V., Meshkova A.I., Efimova J.J., Nikitenko O.A., Medvedeva E. .
Abstract. Questions of formation of laser welded joints in coldrolled strips in a larger continuous technological units are investigated, a
new cold rolling mill JSC «MMK». Metallografic investigation results
of welding zone in low carbon rolled steel after continuous annealing
using ANO are presented.
Keywords: laser welding, band, microstructure, microhardness,
annealing.
1.
References
Dubrovsky B.A., Shilyaev P.V., Las kov S.A., Gorbunov A.V., Lukyanov S.A.,
2.
3.
Golubchik E.M. Osvoenie tehnologij proizvodstva prokata v novom komplekse holodnoj prokatki. [Mastery rolled steel produced in a new cold rolling mill complex]. Stal’. [Steel], 2012, no.2. pp. 63-65.
Efimenko L.A., Prygaev A.K., Elagina O.Yu. Metallovedenie i termicheskaya obrabotka svarnykh soedinenii. [Physical metallurgy and heat
treatment of welded joints: Instructional. allowance]. Moscow: logos,
2007, 456 p.
Malashenko .A., Mezenov A.V. Lazernaya svarka metallov. [Laser welding of metals]. Moscow: Mashinostroenie, 1984. 44 p.
669.15-196.58’26’292: 621.785.616
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59
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[1, 2].
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-
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;
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. 1).
,
[2, 3],
,
[4, 5].
M7C3
-
[4-9].
14%Cr
3%V
-
7-10%.
[7, 9, 10].
,
-
-
.
-
.
3%V,
1,5
14%Cr
. 1).
-
4,2%C (
f(
. 1).
.
M7C3,
,
.
3
680°C
1
,
.%(
HRC
,
150
200
250
270
300
350
420
14
14
14
14
14
14
14
3
3
3
3
3
3
3
C
Cr
V
1,55
1,91
2,53
2,66
3,05
3,54
4,20
13,52
13,96
13,70
13,75
13,81
13,79
13,75
3,08
—
3,24
M7C3 + VC
3,20
M7C3 + VC
3,07
M7C3 + VC
3,09
M7C3 + VC
3,12
M7C3 + VC
3,10 M7C3 + M3C + VC
-
– Fe),
.
5
,
HRC
—
41
43
44
47
48,5
49,5
—
—
770
—
727
663
—
-
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(
f,
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– 300 14 3; – 420 14 3
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. 2013.
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2
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5
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3
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Ac3
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840
805
785
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890
880
875
860
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815
760
750
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740
740
730
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700
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700
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695
280
260
225
180
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1200°
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80
60
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,
(HRC 68,03,5%
,
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.
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100
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100
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70
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60
60
60
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50
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50
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40
20
40
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,
0
1000 1100 1200 1300
T , °C
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30
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100
60
60
50
40
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20
0
1000 1100 1200 1300
T , °C
900
1100
Tmax, °C
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,%
70
900
0
1000 1100 1200 1300
T , °C
1150
420 14 3
HRC
150
200
250
300
350
420
1000°C
0,4
,%
-
72
Tmax
HRCmax
70
1050
68
1000
66
950
64
900
62
HRCmax
1000°C
850
60
1,0 1,5 2,0 2,5 3,0 3,5 4,0 4,5
C,
.%
. 2.
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.
. 2013.
2
———————————————————————————————————
61
. 3).
(
300 14 3
. 2, ).
35
8
68
,
M7C3,
Cr
6
Ms
[10].
300X14 3
,
900
1150°C
0,7
1,25%
3,1
6,5% (
30
Cr
f
.%
50.
1200°C
1150-1200°C
f,%
C
. 2, ),
C , Cr ,
950°C (
25
4
f
20
2
. 3, ).
C
-
,
0
800
[11]
Fe–Cr–C.
M7C3,
900
-
,
VC,
15
1000 1100 1200 1300
T , °C
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x
xV0
xC
10
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V
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8
.%
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Cr ,
6
0
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0
C
w w AC AV
1 wV0 (1 AC AV )
wC
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1 wV0 (1 AC AV )
wCr
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0
V
0
C
120
0
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1
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1,6
000
900
1,2
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wV0 (1
f VC
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00
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00 00
11
10
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,
.%
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4
0,8
2
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0
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w 0,2358 w
; (1 )
1 1, 2358 wV0
0
wCr
1 1, 2358 wV0
AV —
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2,5
3,0 3,5 4,0
C,
.%
4,5
0,0
5,0
(1 )
. 3.
).
-
,
Fe–Cr–C
[12]
–
)
300 14 3
( ;
–
( )
,
[13]
(
,
).
(
4,2%C
(Cr, Fe)7C3;
,
,
)
.
Ms
[11]
940°C
-
,
+ M7C3 + M3C.
M7C3
-
,
.
,
III
Fe–Cr–C
62 ———————————————————————————————————
IV
[14-17]:
. . .
. 2013.
2.
…
.,
.,
.
-
M sIII
M sIV
540 8 Cr
(380 26 Cr ) C
Cr
4;
540 8 Cr
(220 66 Cr ) C
Cr
4;
420 5 Cr
(206 13,5 Cr ) C
Cr
6;
420 5 Cr
(116 28,5 Cr ) C
Cr
6;
(2 )
.
1.
.,
//
. 1988.
(2 )
2.
Ms
:
Ms
max
M sIII , M sIV
.
(2 )
exp
0,011( M
T ) ,
(3)
6.
T
—
,
(20°C).
,
[11];
.
3,0; 3,5
. 2, - .
4,2%C
7.
8.
9.
. 2,
Tmax,
10.
,
(
,
HRC
0,5
Tmax
).
-
;
,
11.
12.
,
13.
(2 )
.
14.
15.
14%Cr
3%V.
.
,
M7C3,
,
VC.
-
.
16.
17.
7. . 31-34.
.,
,
.
, 2002. 200 .
.
1984. 104 .
,
.
.
.,
.
,
-
.,
.
.
:
, 1983. 176 .
.
.,
4.
5.
f
.
3.
.,
.
.
:
.
.
.
.
.
.:
.:
,
.
, 2000. 44 .
.
:
.
. ...
//
.
:
, 1983. . 91-95.
Maratray F., Poulalion A., Fillit R., Bruyas H. The role of vanadium in high
chromium white irons. Bulletin du cercle d’études des métaux, 1983,
vol.15, no.4. p. 17-34.
.,
.,
.
//
.
.
. 2004. 7. . 25-28.
.,
.
,
,
//
.
.
. 2009.
2. . 39-42.
.,
.,
.,
.
//
. 1981. 1. . 52-55.
.,
.
//
.
». 2011. 14.
. 16. . 67-70.
Lee B.-J. On the stability of Cr carbides // CALPHAD. 1992. V. 16. No. 2.
P. 121-149.
.
.
:
, 2003. 380 .
.,
.,
.,
.
. //
. 1979. . 47.
. 1. . 125-135.
.,
.,
.,
.,
.
Fe–Cr //
. 1986. . 61.
. 2.
. 331-338.
.,
.,
.,
.,
.
//
. 1986. . 62.
. 2. . 318-327.
.,
.,
.
. .:
, 1994. 288 .
INFORMATION ABOUT THE PAPER IN ENGLISH
ESTIMATION OF CARBON CONTENT AND HEAT TREATMENT EFFECTS ON PHASE
COMPOSITION OF CHROMIUM-VANADIUM CAST IRONS
Koryagin Yu.D., Okishev K.Yu., Sozykina A.S.
Abstract. The paper considers the effect of carbon content and
heating temperature on hardness and the amount of retained austenite
after quenching in wear-resistant cast irons containing 14% chromium
and 3% vanadium. A model for calculation of structural composition
and hardness of high-carbon alloys containing chromium and vanadium
quenched from a certain temperature is also proposed.
Keywords: chromium- and vanadium-containing alloys, quenching, heating temperature for quenching, hardness, retained austenite.
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. 2013.
2
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treatment of steel]. Chelyabinsk: ChPI, 1983. pp. 91-95.
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chromium white irons. Bulletin du cercle d’études des métaux. 1983,
vol.15, no.4, pp. 17-34.
Kolokol’tsev V.M., Petrochenko E.V., Molochkov P.A. Struktura i
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64 ———————————————————————————————————
«
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