2. Domestic development

Since the successful trial of the first furnace of superalloy GH3030 in 1956, the research, production and application of superalloys in my country have gone through 60 years of development so far. The 60-year development of superalloys can be divided into three stages.

The first stage: from 1956 to the early 1970s was the entrepreneurial and initial stage of my country's superalloys. This stage is mainly to imitate the alloy series based on the former Soviet Union's superalloys, such as: GH4033, GH4049, GH2036, GH3030, K401 and K403.

The second stage: from the middle of the 1970s to the middle of the 1990s, is the improvement stage of my country's superalloys. The main stage is to trial-produce European and American models of engines to improve the production technology of superalloys and product quality control.

The third stage: from the mid-1990s to the present, it is a new development stage of my country's superalloys. This stage is mainly to apply and develop a batch of new processes, develop and produce a series of high-performance, high-grade new alloys.

The main research units of China's superalloy research are the Central Iron and Steel Research Institute, Beijing Institute of Aeronautical Materials, Institute of Metal Research, Chinese Academy of Sciences, University of Science and Technology Beijing, Northeastern University, Northwestern Polytechnical University, etc. The main manufacturers are: AVIC, Steel Research Gona , Shizhu Nonferrous Metals, Fushun Special Steel, Gaogang Special Steel and Wanhang Mould Forging Plant (Erzhong) of the Second Heavy Machinery Group. On this basis, my country has the capability of independent R&D and research of new materials and new processes for superalloys.

Although high-temperature metal alloy materials have been developed in my country for nearly 60 years, the industry is still in a growth stage. Due to the high technical content in the field of high-temperature metal alloy materials, enterprises in this industry have a deep moat. The annual demand for high-temperature metal alloys in my country is more than 20,000 tons, the domestic annual production is about 10,000 tons, and the market capacity exceeds 8 billion yuan, of which imports account for a relatively large proportion. In the next 20 years, China's procurement demand for various military aircraft will be about 2,800, and the number of civilian aircraft procurement will be about 5,400. The corresponding demand for superalloys will be more than 150 billion. Coupled with the demand for gas turbines of 50 billion, there will only be space for superalloys. The 200 billion market space is about to open.

There are two gaps between my country's production capacity and demand: (1) Insufficient production capacity. The number of high-temperature alloy production enterprises in my country is limited, and there is a large gap between production capacity and demand. High-temperature alloys in the fields of gas turbines and nuclear power mainly rely on imports. (2) High-end products are difficult to meet application requirements. There is a big gap between my country's superalloy production level and the United States, Russia and other countries. With my country's development of higher performance aerospace engines, the supply of superalloy materials cannot meet application needs.