1.What are the characteristics of GH2132 Superalloy?
Chemical Composition Core: It is dominated by iron (Fe, ~30-40%), nickel (Ni, ~32-36%), and chromium (Cr, ~13.5-16.5%). The alloy also contains critical strengthening elements such as titanium (Ti, ~2.4-3.2%), aluminum (Al, ~0.4-1.0%), and small amounts of vanadium (V) and carbon (C) to achieve precipitation hardening.
Precipitation Hardening Mechanism: After specific heat treatment (solution treatment + aging), the alloy precipitates a large number of intermetallic compounds (mainly γ' phase, Ni₃(Ti, Al)) in the matrix. These fine and dispersed precipitates effectively block the movement of dislocations, thereby significantly improving the alloy's strength, especially high-temperature strength.
Good High-Temperature Stability: It can maintain stable mechanical properties at temperatures up to 650°C, including sufficient tensile strength, yield strength, and creep resistance. This makes it suitable for long-term service in high-temperature structural parts such as aero-engine components and industrial furnace parts.
Excellent Corrosion and Oxidation Resistance: The high chromium content forms a dense chromium oxide protective film on the surface, which can resist oxidation and corrosion in high-temperature air, as well as corrosion from some acidic and alkaline media.
Superior Processability and Weldability: It has good cold and hot working performance, and can be processed into various forms such as sheets, bars, wires, and forgings. Meanwhile, it has excellent weldability; after welding, proper post-weld heat treatment can restore the joint strength to match the base metal.
Cost-Effectiveness: Compared with nickel-based superalloys with higher nickel content, GH2132 has a lower nickel proportion and a higher iron content, which reduces the material cost while ensuring performance, making it widely used in industrial fields with moderate cost sensitivity.
2. What is the yield strength of GH2132 Superalloy?
Heat Treatment Basis: The standard heat treatment for GH2132 to achieve optimal strength is "solution treatment (980-1000°C, water cooling) + aging treatment (700-720°C, holding for 16 hours, air cooling)".
Room Temperature (20°C): Under the standard heat treatment state, the yield strength is approximately ≥640 MPa.
High Temperature (Typical Service Temperatures):
At 500°C: Yield strength is about ≥590 MPa.
At 600°C: Yield strength is about ≥540 MPa.
At 650°C: Yield strength remains at approximately ≥490 MPa, which can meet the strength requirements of structural parts under medium-to-high temperature loads.
3. What is the tensile strength of GH2132 Superalloy?
Room Temperature (20°C): Under the standard heat treatment state, the tensile strength is approximately ≥930 MPa.
High Temperature (Typical Service Temperatures):
At 500°C: Tensile strength is about ≥840 MPa.
At 600°C: Tensile strength is about ≥760 MPa.
At 650°C: Tensile strength is about ≥680 MPa, maintaining high load-bearing capacity in the upper limit of its service temperature range.
