(GH37、Зи617、XH70BMTTЮ)
1.Composition(wt%)
|
C
|
Cr |
Ni
|
W
|
Mo
|
Al
|
Ti
|
Fe
|
|
0.03-0.10
|
13.0-16.0
|
balance
|
5.0-7.0
|
2.0-4.0
|
1.7-2.3
|
1.8-2.3
|
≤5.0
|
|
V
|
B
|
Ce
|
Si
|
Mn
|
P
|
S
|
Cu
|
|
0.1-0.5
|
≤0.02
|
≤0.02
|
≤0.4
|
≤0.5
|
≤0.15
|
≤0.10
|
≤0.07
|
2.Physical Properties
|
Density
(g/cm3 )
|
Thermal conductivity
（100℃)(W/m•℃ )
|
Thermal expansion coefficient
(20-100℃)(10-6℃-1)
|
Melting point
( ℃ )
|
Electric resistivity
( 10-6Ω•m)
|
Elastic modulus
(GPa )
|
|
8.37
|
10.9
|
11.27
|
1278-1346
|
1.33
|
220
|
3.Properties
1.Mechanical properties
| Condition |
Temperature
/℃
|
бb
N/mm2
|
δ5/%
|
Ψ/%
|
Ak
kJ/m2
|
|
Annealing+ageing
|
20
|
-
|
-
|
-
|
333-360
|
|
600
|
1029-1058
|
25-29
|
26-32
|
588-686
|
|
700
|
989.8-1048
|
19-24
|
23-27
|
530-627
|
|
750
|
823.2-842.8
|
17-19
|
22-24
|
470-578
|
|
800
|
735-764
|
21-27
|
28-29
|
620-686
|
|
850
|
568.4-617
|
16-23
|
28-37
|
686-735
|
2.Endurance properties
|
Condition
|
Temperature
/℃
|
Smooth specimens
|
|
Notch specimens
R=0.5mm
|
|
б N/mm2
|
τ /h
|
δ5 %
|
Ψ %
|
бH N/mm2
|
τ /h
|
|
Annealing+ageing
|
700
|
470.2
|
423-458
|
3.8-7.0
|
6.3-11.2
|
40
|
>307
|
|
850
|
196
|
113-130
|
12.4-19.2
|
21.0-26.3
|
-
|
-
|
3.Creep and fatigue properties
|
Condition
|
Temperature
/℃
|
Creep properties
|
Fatigue properties
|
|
б
N/mm2
|
τ
小时
|
Total deformation
%
|
Residual deformation
%
|
б-1
N/mm2
|
N
times
|
|
Annealing+ageing
|
700
|
-
|
-
|
-
|
-
|
362.6
|
7.7*106->1.37*107
|
|
800
|
225.4
|
100
|
0.193-0.357
|
0.008-0.250
|
-
|
-
|
4.After long term ageing properties
（1）Mechanical properties at room temperature
|
Condition
|
Temperature
/℃
|
бb N/mm2
|
δ5
%
|
Ψ
%
|
Ak
kJ/m2
|
HB(d)
mm
|
|
Nonageing
|
0
|
1087.8
|
16.2
|
16.7
|
313.6
|
3.35
|
|
Ageing100h
|
1176
|
23.2
|
22
|
343
|
3.36
|
|
Ageing300h
|
1166.2
|
23.4
|
23.2
|
264.6
|
3.34
|
|
Ageing500h
|
1146.6
|
22.4
|
24.8
|
245
|
3.40
|
|
Ageing1000h
|
1156.4
|
22.4
|
21.5
|
343
|
3.44
|
（2）Mechanical properties at high temperature
|
Condition
|
700℃
|
800℃
|
|
бb N/mm2
|
δ5
%
|
Ψ
%
|
Ak
kJ/m2
|
бb
N/mm2
|
δ5
%
|
Ψ
%
|
Ak
kJ/m2
|
|
Ageing200h
|
1107.4
|
15
|
16
|
431.2
|
803.6
|
-
|
26
|
539
|
|
Ageing400h
|
1097.6
|
15
|
17.5
|
490
|
823.2
|
22
|
24
|
548.8
|
|
Ageing600h
|
1087.8
|
16.5
|
18
|
421.4
|
813.4
|
22.4
|
23.5
|
509.6
|
|
Ageing800h
|
1078
|
15.5
|
19
|
490
|
813.4
|
23.5
|
24
|
548.8
|
|
Ageing1000h
|
1058.4
|
-
|
19.5
|
372.4
|
803.6
|
24
|
26.5
|
529.2
|
(3)Endurance properties
|
Condition
|
Temperature
℃
|
б
N/mm2
|
τ
h
|
δ5
%
|
Ψ
%
|
|
Ageing200h
|
700
|
470.4
|
370
|
6.0
|
14.5
|
|
Ageing400h
|
365
|
9.5
|
15
|
|
Ageing600h
|
350
|
11.5
|
16
|
（4）High frequency vibration fatigue properties
|
Condition
|
Temperature
/℃
|
Fatigue stress
N/mm2
|
Cycles
/times
|
|
Annealing+ageing200h
|
700
|
294±245
|
5.86X106
|
|
Annealing+ageing400h
|
2.53X106
|
|
Annealing+ageing600h
|
2.45X106
|
(5)Hot and cold fatigue resistance properties
|
Condition
|
Temperature
/℃
|
Cycles
times
|
Crack length
mm
|
|
Annealing+ageing
|
800~20
|
100
|
0.46
|
4.Characteristics
1.Easy processability.
2.High heat strong, good comprehensive performance and organizational stability at 850℃.
3. Oxidation resistance at 850 ℃ , organizational stability also in long-term use.
4.Oxidation resistance：
|
Temperature
℃
|
Soaking time
h
|
Oxidation rate
g/(m2•h)
|
|
900
1000
|
100
|
0.071
0.265
|
5.Structure
Nickel base alloy, austenite, ageing strengthening. Organization is austenitic matrix and phaseγ 'of dispersion precipitates
in the standard heat treatment condition, with a small amount of M23C6 and M6C type carbides at grain boundaries ,block
type of MC carbides intracrystalline.
6.Applications
Used in the manufacture turbine blades working in 800-850 ℃.
|
