GH4033 Alloy Bar

GH4033 is a Ni-Cr-based precipitation hardening deformed high-temperature alloy. Aluminum and titanium elements are added to form a precipitation strengthening phase. The service temperature is less than 700°C. The alloy has sufficient high-temperature strength at 700℃~750℃ and good oxidation resistance below 900℃. The alloy has good cold and hot working properties. Suitable for manufacturing turbine blades operating below 750℃ and turbine discs operating below 700℃ and other parts. The main products include hot-rolled and forged bars, cold-drawn bars, cold-rolled plates, cold-drawn wires, forged round cakes, turbine working blades and disc (ring) parts, etc.

GH4033 Chemical composition:

GH4033 (GH33) Bar Other Overview and Special Requirements:

This alloy is widely used in high-temperature components of turbine engines, mainly as turbine blades, turbine discs, and other high-temperature load-bearing components. It is one of the alloys with mature usage experience both domestically and internationally. During hot rolling and forging, attention should be paid to the recrystallization problem of this alloy. It has a tendency to form uneven and coarse grains, which can easily lead to coarse grain waste. In addition, the production process should be strictly controlled to avoid the phenomenon of a decrease in tensile plasticity at 700 ℃.

process performance:

1. The alloy has good hot working performance, with a forging heating temperature of 1140 ℃ and a final forging temperature of 950 ℃.

2. The average grain size of this alloy is closely related to the degree of deformation of the forging and the final forging temperature.

3. The alloy can be subjected to argon arc welding in a solid solution state, and timely treatment should be carried out after welding to eliminate welding stress.

4. Surface treatment process: The machined parts need to undergo electrolytic polishing. If mechanical polishing is used, the final polishing marks should be consistent with the length direction of the blade.

5. The heating rate of solid solution treatment for parts should not be too fast, and a stepped heating curve can be used.

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