Corrosion-Mechanical Properties of Multifunctional Composition "Steel-Material with a Shape Memory Effect"

Abstract

The article studies results of corrosion-mechanical behavior of multifunctional composition "steel-material with a shape memory effect" formed in high-energy impacts in different environments. Analysis of experimental results shows an increased resistance to corrosion of the composition "steel-material with SME based on TiNi, NiAl» and confirms their protective properties in water, natural atmosphere, marine environments, saturated NaCl solution and medium aggressive environments. It has been shown that for highly corrosive acids with concentration of > 20% based on hydrofluoric HF, hydrochloric HCl, sulfuric H2SO4 there are several limitations and stages associated with dissolution of the layer and loss of corrosion resistance. Given the significant effect of surface treatment method on the whole range of functional and mechanical properties of materials with shape memory effect, we proposed recommendations on the selection of compromise solutions.