GH3170(GH170)
1.Composition(wt%)
|
C
|
Cr
|
Ni
|
Co
|
W
|
Al
|
La
|
|
≤0.06
|
18.0-22.0
|
balance
|
15.0-22.0
|
17.0-21.0
|
≤0.5
|
0.1
|
|
B
|
Zr
|
Si
|
Mn
|
P
|
S
|
-
|
|
≤0.005
|
0.10-0.20
|
≤0.8
|
≤0.5
|
≤0.013
|
≤0.013
|
-
|
2.Physical Properties
|
Density
(g/cm3 )
|
Thermal conductivity
/W/m•℃ （100℃）
|
Thermal expansion coefficient
/10-6(20-100℃)/ ℃
|
Electrical resistivity
(Ω·mm2/m)
|
Melting point
(℃)
|
|
9.34
|
13.4
|
11.7
|
1.192
|
1395-1425
|
3.Properties
(1).Mechanical properties
|
Condition
|
Temperature/℃
|
бb N/mm2
|
б0.2N/mm2
|
δ5/%
|
|
Annealing
|
20
|
862.4-950.6
|
343-441
|
53-68
|
|
500
|
666.4-833
|
－
|
49-62
|
|
600
|
686-833
|
－
|
45-64
|
|
700
|
539-744.8
|
－
|
38-52
|
|
750
|
450.8-588
|
－
|
33-65
|
|
800
|
441-529.2
|
－
|
28-90
|
|
850
|
362.6-401.8
|
196-303.8
|
44-84
|
|
900
|
274.4-303.8
|
176.4-225.4
|
56-110
|
|
950
|
205.8-225.4
|
137.2-166.6
|
51-68
|
|
1000
|
156.8-186.2
|
107.8-117.6
|
80-101
|
|
1050
|
117.6-127.4
|
98-107.8
|
66-110
|
|
1100
|
88.2-98
|
56.84
|
63
|
(2).Endurance properties
|
Condition
|
Temperature/℃
|
б
|
τ
|
|
N/mm2
|
h
|
|
Annealing
|
800
|
117.6
|
2330
|
|
176.4
|
115-141
|
|
205.8
|
50-60
|
|
900
|
58.8
|
1253-1428
|
|
78.4
|
140-388
|
|
98
|
35-71
|
|
950
|
39.2
|
798-1043
|
|
58.8
|
160-273
|
|
73.5
|
42-72
|
|
1000
|
19.6
|
784-1028
|
|
39.2
|
154-193
|
|
49
|
52-91
|
3.Creep properties
|
Condition
|
Temperature/℃
|
Creep properties
|
|
б
N/mm2
|
τ
h
|
Plastic deformation
%
|
|
Annealing
|
900
|
53.9
|
100
|
1.0
|
|
950
|
39.2
|
100
|
1.0
|
4.Hot and cold fatigue properties
|
Condition
|
Temperature/℃
|
Number of cycle
|
Crack length
mm
|
|
Annealing
|
900~20
|
57
|
0.5
|
|
950~20
|
42
|
0.5
|
|
1000~20
|
35
|
0.5
|
5. After long term ageing properties
（1）.Mechanical properties
|
Condition
|
900℃
|
1000℃
|
|
бb N/mm2
|
δ5/%
|
бb N/mm2
|
δ5/%
|
|
Annealing+900℃(100h )
|
294
|
81
|
-
|
-
|
|
Annealing+1000(500h )
|
-
|
-
|
166.6
|
75
|
（2）.Endurance properties
| Condition |
Temperature/℃ |
б N/mm2 |
τ/h |
|
Annealing+ageing100h
|
900
|
78.4
|
256-376
|
|
Annealing+ageing500h
|
1000
|
39.2
|
116-137
|
(3).Hot and cold fatigue properties
|
Condition
|
Temperature/℃
|
Number of cycle
|
Crack length
mm
|
|
Nonageing
|
900~20
|
70
|
0.56
|
|
Ageing200℃
|
0.91
|
6.Repeated bending and cup drawing properties
|
Condition
|
Number of
repeated bending
|
Cup drawing depth
/mm
|
|
Annealing
|
20-22
|
12.6-13.4
|
4.Characteristics
Higher strength and creep properties, and a good oxidation performance in 900-1000 ℃,
easy to forming and welding in solid solution condition.
Oxidation resistance：
|
Condition
|
Temperature
/℃
|
Soaking time
/h
|
Weight gains
/g/(m2•h)
|
|
Solid solution
|
1000
|
100
|
0.0432
|
|
1100
|
100
|
0.1620
|
5.Structure
Ni - Cr - Co, heat-resistant alloy, solid solution strengthening ,to a large number of W strengthening, solid solution,
Zr and B as a secondary reinforcement.
Alloy in the organization of the solid solution , apart from austenitic matrix, has small M6C and phase μ of uniform distribution.
6.Applications
Provided in the form of new aircraft engine combustor and afterburner and other high temperature mechanical parts,such as guide vane. |
