Researchers from the Russian National Research University of Technology have developed a unique method for processing three-dimensional metallic glass by selecting alloy components and refining alloy systems, thereby expanding the application range of metallic glass materials. Related research results were recently published in the international "Alloys and Compounds" journal.
Different from the crystalline form, metallic glass is a material in which atoms far away from each other lack regular arrangement. Therefore, they have the characteristics of high strength, good elasticity, and high corrosion resistance. They are used in instrument manufacturing, mechanical manufacturing, medicine and magnetism. —The field of electrical engineering.
However, researchers from the Russian National Research University of Technology pointed out that one of the obstacles to the widespread use of metallic glasses is their high brittleness. The new treatment methods for metallic glasses developed by researchers can help solve this problem.
The research leader of the project and a professor at the National Research University of Technology Dmitry Luzkin explained that the choice of alloy composition and refining alloy system helps to bypass this problem: at about 100 degrees lower than the curing temperature of the glass In the case of gradual cooling, it helps to avoid brittleness of the metallic glass, so as to obtain the plasticization of the three-dimensional sample and the hardening of the sample. He said that the decomposition method of the initial amorphous matrix of the alloy affects the properties of the material obtained, and it depends on the geometry of the sample. Different results can be obtained for three-dimensional or ribbon samples.
Andrei Bazlov, the researcher who invented this method and a researcher at the Department of Nonferrous Metals of the Russian National Research University of Technology, said that for three-dimensional samples, by decomposing the homogeneous amorphous phase into two, When the elongation is 1.5% at room temperature, the plasticity of metallic glass can be improved. For ribbon samples, while maintaining bending and compression elasticity, the hardness of metallic glass can be increased by 25% by separating the secondary amorphous phase glass-like nanoparticles of about 7 nanometers.