Stainless steel (nickel)
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GH3030 superalloy
Public Time:2011年10月25日 | Sort:Stainless steel (nickel) | Hits:2133

    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.

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