According to news in March 2019, the Hunan Aerospace Changsha New Material Industry Research Institute, a subsidiary of China Aerospace Science and Industry Corporation, has successfully developed the new material industry by adding rare earth elements, adjusting chemical composition, and exploring post-processing techniques driven by the demand for model products of the group company. 

A high-strength aluminum alloy powder material and applied for several related patents. Through the use of different types of equipment in many domestic users, the room temperature tensile strength of the molded parts of this alloy powder material is more than 535MPa, the yield strength is more than 510MPa, and the elongation is more than 12%. The performance of the high-strength aluminum alloy powder products developed by foreign Airbus companies is comparable, and it has been promoted and applied in aviation, aerospace and other fields.

Domestically produced metal 3D printing powder material manufacturers, on the whole, are constantly trying to catch up. This time, the performance of high-strength aluminum alloy powder products has reached the international advanced level, which is a good case.

Additive manufacturing technology has become one of the important means to accelerate the transformation and upgrading of China's manufacturing industry. However, most of the additive manufacturing powder materials are imported, and the types are limited, and the sale of high-performance powders is banned in China. With the increasing demand for weight reduction of defense weapons and equipment, the demand for additive manufacturing of aluminum alloy parts is becoming more and more urgent. At present, the commonly used additive manufacturing aluminum alloy powder material is only AlSi10Mg, and the room temperature tensile strength is less than 400MPa, which cannot meet the needs of the aviation and aerospace fields. In response to the demand for additive manufacturing of aluminum alloy parts for aviation, foreign Airbus has developed the world's first high-strength aluminum alloy powder material for additive manufacturing. The room temperature tensile strength reaches 520MPa or more, which is the international leading level and has been applied to A320 aircraft. Additive manufacturing of engine room structural parts.

Hunan Aerospace Changsha New Material Industry Research Institute, as the China Aerospace Science and Industry Corporation Additive Manufacturing Technology Innovation Sub-center and a member unit of the Special Materials Working Group of the National Additive Manufacturing Standardization Technical Committee, has introduced nickel-based superalloys and copper alloys to the market. , Titanium alloy, stainless steel, as well as tungsten, tantalum and other high-quality spherical metal powder products, the product performance is highly recognized by customers inside and outside the group. Aerospace New Materials will uphold the win-win attitude of cooperation with domestic and foreign units, jointly promote the rapid development of China's additive manufacturing industry, and help China's manufacturing transformation and upgrading.

Link to this article： Successfully developed 3D printing high-strength aluminum alloy powder products

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