GH3030 features and applications overview:
The early development of the alloy is solid solution strengthening of 80Ni-20Cr alloy high-temperature, chemical composition is simple, at 800 ℃ with the satisfaction of the following strength and high thermal plastic, and has good resistance to oxidation, thermal fatigue, cold stamping and welding performance. Alloy after solution treatment for single-phase austenite, the process of using organizational stability. 800 ℃ work mainly for the following turbine engine combustion chamber components and the following requirements at 1100 ℃ oxidation but the loads of other small high-temperature components.
GH3030 similar grades:
Зи435, XH78T (Russia)
GH3030 mechanical properties: (at 20 ℃ test the mechanical properties of the minimum)
Heat treatment tensile strength σb / MPa
Yield strength σp0.2/MPa
Elongation σ5 /%
Brinell hardness HBS
Solution treatment
GH3030 production and implementation of standards:
Standard chemical composition
Bar
Forgings
Plate
Wire
Pipe
National standards
GB/T14992
GB/T14994
GB/T14993
GB/T14997
GB/T14998
GB/T14995
GB/T14996
YB/T5249
GB/T15062
Aviation Industry Standard
HB5189
National Military Standard
GJB2611
GJB3165
GJB3020
GJB3317
GJB1952
GJB3318
GJB2612
GJB3167
GJB2297
GH3030 metallographic structure:
The alloy after solution treatment at 1000 ℃ for single-phase austenite, a small amount between TiC and Ti (CN).
GH3030 process performance and requirements:
1, the alloy has a good performance can be forged, forging heating temperature of 1180 ℃, final forging 900 ℃.
2, the alloy grain size and average degree of deformation of the forging, final forging temperature.
3, heat treatment, parts surface oxide can be blown clean sand or pickling methods.
