Do you know what alloy material (inconel625/NO6625) is?
Inconel 625 Introduction:
625 alloy has excellent corrosion resistance and oxidation resistance, good tensile properties and fatigue properties from low temperature to 980°C, and is resistant to stress corrosion in salt spray atmosphere. Therefore, it can be widely used in the manufacture of aerospace engine parts, aerospace structural components and chemical equipment and in situations where it is exposed to seawater and is subject to high mechanical stress.
Inconel 625 alloy is a nickel-chromium-molybdenum alloy with excellent corrosion resistance in a range of oxidizing and reducing atmospheres. It is widely used in marine, petrochemical and nuclear energy industries. This alloy is a solid solution strengthened corrosion-resistant alloy and can obtain a yield strength of more than 1000MPa through cold working.
There are many studies on this alloy abroad, and most of the studies focus on the material's weldability, corrosion resistance, and structural transformation during hot and cold processing. Domestic Li Yamin et al. studied the precipitation phase of 625 alloy after long-term aging. Zhang Qian et al. studied the effect of solution treatment on the microstructure and tensile properties of hot isostatically pressed Inconel 625 alloy. Deng Dewei et al. studied the effect of pulse current on Inconel 625. The influence of alloy crack tip structure and properties [10].
With the development of my country's high-end equipment manufacturing industry, the demand for large ingot type 625 alloy is becoming increasingly urgent. All relevant domestic manufacturers have started trial production of large ingot type 625 alloy. Since the alloy contains a large amount of Nb, Mo and other elements that are prone to segregation, segregation of elements will inevitably occur during the solidification process of large ingots, seriously affecting the hot workability of the alloy and the final performance of the product. Therefore, it is becoming increasingly urgent to master the solidification law of large ingot type 625 alloy. However, there are currently relatively few research reports on the smelting and solidification of large ingot type 625 alloy.
