Russian State Technical Research University Moscow State Institute of Iron and Steel Alloys cooperates with Rusal Aluminium's researchers responsible for light materials and technology research, and uses new processing and production methods to create heat-resistant high-strength alloys that can ensure cars and aircraft Structural accessories work well at high temperatures. Related research papers were published in the journal "Materials Newsletter".
Metal parts made of alloys based on aluminum-silicon systems have high strength at room temperature, and these alloys are synthesized according to selective laser melting (SLM) technology. However, such alloys usually cannot ensure high strength at temperatures above 200 degrees Celsius.
Alexander Chulyov, an associate professor and co-author of the thesis at the Moscow State Institute of Steel and Alloy Research, State Technical University of Russia, said that defects such as hot cracks and powder particles not melting into the alloy are typical problems in the production of parts by selective laser melting. To this end, researchers have developed a high-efficiency state of selective laser melting to ensure that the bulk density of synthetic materials is theoretically at the level of 99.8%. In the process, the high strength of the alloy is formed by small phases of the alloy at different stages. Structure to ensure.
Relevant experts pointed out that the new alloy materials can be used in the manufacture of automotive and aerospace technology equipment parts with complex shapes and optimal geometric parameters.