Effect of production technology on the structural condition and mechanical properties of a shape-memory alloy based on the Fe–Mn–Si system

Abstract

As a result of this study, it was determined that production in an open induction furnace is the sufficient technology for smelting shape-memory alloys (SMAs) based on the Fe–Mn–Si system. It has been found that the high rates of crystallization are necessary in order to obtain a homogeneous, fine-grained cast structure. A procedure for determining the phase composition of shape-memory alloys based on the Fe–Mn–Si system was developed. It was shown that extended high-temperature homogenizing annealing is essential for the production of a defect-free workpiece using pressure metal treatment methods. Heat treatment conditions were proposed that would allow obtaining satisfactory mechanical properties for further manufacture of various products.