MODELING OF THE INFLUENCE OF THE CHEMICAL COMPOSITION AND STRUCTURE ON THE MECHANICAL PROPERTIES OF ALLOY ROLLED PRODUCTS
Keywords:alloy, chemical composition, heat treatment, cooling, structure, mechanical properties
At present, carbon steels alloyed with chromium, molybdenum and vanadium are widely used in industry and mechanical engineering. It is known that the complex of mechanical properties of metal products depends on the number of alloying elements and the mode of heat treatment. With the help of mathematical and physico-chemical modeling, dependences were constructed that allow to predict the level of mechanical properties of alloy steel. The ranges of the number of alloying elements for 31CrMoV9 steel are defined, which guarantee compliance with the requirements of regulatory documentation beyond the strength and elongation. Metallographic studies allowed to establish the influence of heat treatment parameters on the structure of the studied alloy steel. Recommended cooling rates, which allow to obtain a more acceptable structure for further processing with the required mechanical properties.
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