Engineers at NUST MISIS have received a patent for a hybrid material based on aluminum. The novelty combines light weight with high strength and heat resistance. By weight, the composite is three times lighter than structural steel, but at the same time it is not inferior to it in reliability.
Scientists at the University of MISIS have created and patented an innovative aluminum-based composite that, at temperatures above 300 degrees, demonstrates strength close to that of structural steel, while remaining almost three times lighter. The development will be in demand in aviation, astronautics, and mechanical engineering, where parts and equipment are operated in extreme conditions and aggressive environments.
The NUST MISIS team solved this problem by changing the internal structure. The aluminum base was reinforced with submicron particles of aluminum oxide and titanium powder was added.
During heat treatment, titanium reacts with aluminum. As a result, hard and refractory intermetallic particles are formed. They act as an additional frame inside the metal.
To enhance the effect, scientists used intensive processing in a planetary ball mill. This process grinds the structure down to the nanoscale. Many ultrafine and stable grains are formed in the material, which significantly increases the overall strength.
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