GH5188 alloy is a solution-strengthened cobalt-based superalloy, which uses carbide as the main strengthening phase. Compared with nickel-based superalloys, the alloy has better creep resistance and hot corrosion resistance.
GH5188 is a solution-strengthened cobalt-based superalloy, which is widely used in aerospace, energy, chemical and other industries due to its excellent high-temperature strength and good oxidation resistance.
Mechanical properties
GH5188 exhibits good mechanical properties at room temperature and high temperature, including high strength, good toughness and fatigue resistance. Its typical mechanical properties are as follows:
· 抗拉强度：≥860 MPa（室温）
· 屈服强度：≥380 MPa（室温）
· 伸长率：≥45%（室温）
· Endurance: 166 MPa at 927°C for σ/MPa and 23 hours for t/h
Heat treatment properties
The heat treatment of GH5188 usually includes solution treatment and aging treatment. Solution treatment can improve its plasticity and toughness, while aging treatment can improve its strength and hardness. The temperature range of solution treatment is 1170~1190°C, and the aging treatment is carried out at different temperatures as needed
3. Processing and welding performance
GH5188 has good processing properties and can be formed by forging, rolling and other processes. The welding performance of the alloy is also good, but it is necessary to pay attention to preheating and post-welding heat treatment when welding to avoid cracks. TIG welding is the recommended welding method to achieve joint properties similar to those of the base material
4. Fields of application
GH5188 is widely used in:
· Aerospace: used to manufacture high-temperature components for aero engines, such as combustion chambers, tail nozzles, etc.
· Energy industry: heat exchangers for gas turbines, nuclear reactors, etc.
· Chemical industry: used to manufacture equipment and components that work in high-temperature, high-pressure and corrosive environments