NANOSTRUCTURED METALLIC MATERIALS: STATUS AND PROSPECTS
The physical and mechanical properties of existing and future fields of application of nanostructured metallic materials, as well as their importance for the steel-industries, including mining engineering are considered. It is noted that at the present time in the world in the preparation of most metals and alloys their required properties are provided by controlling the formation of the structure. In this case, the physical and mechanical properties of metals and alloys are significantly improved by nanostructuring. It is shown that the properties of nanostructured metal materials depend essentially on the nature of the distribution, shape and chemical composition of the constituent crystallites. An additional reason for the specific properties of nanostructured metallic materials is the increase of the the volume fraction of the interfaces with the decrease in crystallite size. It is concluded that further development of advanced technologies is associated with the scientific and technical achievements of the complex issue of improved physical and mechanical properties of metallic structural materials, tool and tribological applications. Therefore, high-strength and wear-resistant nanostructured metals and alloys are the most promising starting materials for the production of high-tech steel consuming industries.