The Formation of Nanostructured Surface Layers of a Material with Shape Memory Effect of the TiNi Deposition Melt of the Fusible Metal at a Temperature Gradient

Abstract

The results of experimental studies on the formation of the surface layers of a material with shape memory effect (SME) based on TiNi deposition of Pb-Bi melt at a temperature gradient of 600-1100 °C in an argon atmosphere. It is shown that this method allows to obtain uniform surface layers in nanostructured state and almost any thickness can be used for the formation of coatings on the interior surfaces of products of any shape with the stress concentrators. Structure, chemical and phase composition of the surface layers provide a manifestation of TiNi shape memory. The average grain size of TiNi coatings ranges between 60 ÷ 160 nm.

Effect of Hafnium on the Structural and Mechanical Properties of the Surface Layers on the Basis of TiNi

“…Formation of nanostructured states in the bulk and on the surface is achieved by different processing techniques in combination with high impact conditions [7][8][9]. In this case the synergies principle is implemented in the combined method, which manifests itself in the new high-quality effects when combined with various kinetic mechanisms [10]. This combined process comprises the grinding and mechanical activation of powders for surface modification [6][7][8][9][10].…”

“…In this case the synergies principle is implemented in the combined method, which manifests itself in the new high-quality effects when combined with various kinetic mechanisms [10]. This combined process comprises the grinding and mechanical activation of powders for surface modification [6][7][8][9][10].…”

Formation of the Surface Layers of a Material with Shape-Memory-Based TiNiCo Diffusion Metallization

“…One of the main features of modern high technologies is the desire to create and use new materials that have, in addition to a unique combination of mechanical, physical, and other properties, the ability to actively respond to changes in external conditions or external influence (smart materials). In this regard, the formation of nanostructured states in materials with shape memory effect (SME), both in the bulk and on the surface, is an important aspect of modern materials [1][2][3][4][5]. This is particularly important for the development of new-generation functional materials, as their reliable operation requires a sufficient margin of safety.…”