Russian national technology research at the university of Moscow’s national institute for the steel alloy with Russian aluminium company responsible for lightweight materials and technology research of cooperation of scientific research personnel, and use the new processing and manufacturing method to produce the heat resistant high strength alloy, the alloy can ensure that the structure of the automobile and the airplane parts working well under high temperature. The research is published in the journal materials communications.
Metal components made from alloys based on the al-si system, which are synthesized using selective lasaer pointer melting (SLM) technology, have high strength at room temperature. But normally such alloys cannot ensure high strength at temperatures above 200c.
Alexander chulyumov, an associate professor at the Moscow state institute of steel alloys at the state technical research university of Russia and one of the authors of the paper, said that the defects such as hot cracks and powder particles not melting into the alloy are typical problems in the production of spare parts by selective laser melting technology. To this end, the researchers developed a highly efficient state of selective laser melting, ensuring that the bulk density of the composite material is theoretically at 99. At the 8% level, the high strength of the alloy during this process is ensured by the small material structure that forms the alloy at different stages.
Experts point out that the new alloy material can be used in the manufacture of automobile and aerospace technical equipment parts with complex shapes and optimal geometric parameters.