Effect of combining continuous casting and simultaneous solidliquid metal deformation on the structure and properties of alloy V95 products

Abstract

It is known that the solidification of melts under the influence of external factors leads to the formation of a fine-grained structure in the work pieces which improves the mechanical characteristics of finished metal products. The production of lengthy profiles with a high level of mechanical properties in a short production cycle is a complex interdisciplinary task of great practical importance. The paper presents results of research of the properties of products from aluminum alloy V95, which were obtained by continuous vertical casting combined with deformation in the solid-liquid state during solidification. A diagram of a device that implements such a process of combining is presented; its operation is reviewed. Also, a description is given of a method for producing flat work pieces and sample preparation for studying their mechanical characteristics and microstructure.As research shows the metal products have a fine-grained structure with a dense directional arrangement of dislocations. The grain boundaries are wide, uneven, consisting of grids and dislocation plexuses. During the melt solidification a thin directional dislocation structure is formed in the crystallizer of the device providing increase of the mechanical characteristics of metal products without additional processing, and there are no shrinkage defects. The possibility of obtaining long metal products with high mechanical characteristics for a short production cycle with reduced power costs was shown.