Nickel based alloys are generally alloys with content of Ni exceeding 30wt%, and content of Ni of common products are all exceeding 50wt%. Due to their superior high-temperature mechanical strength and corrosion resistance, they are collectively referred to as superalloys with iron-based and cobalt based alloys. They are generally used in high-temperature environments above 540 ℃, and different alloy designs are selected according to their usage scenarios. They are often used in special corrosion-resistant environments, high-temperature corrosive environments, and equipment that requires high-temperature mechanical strength. Commonly used in space industry, energy industry, petrochemical industry, or special electronic/optoelectronic Industry.