Modification of physical-mechanical properties of NiTi alloy by electron beam in surface melting mode

16th International Conference of Students and Young Scientists "Prospects of Fundamental Sciences Development"

自然科学（总论）

D'Yachenko, F.A.^1 ; Meisner, S.N.^1 ; Yakovlev, E.V.^2 ; Atovullaeva, A.A.^3 ; Meisner, L.L.^1^3

Institute of Strength Physics and Materials Science, SB RAS, Tomsk, Russia^1

Institute of High-Current Electronics, SB RAS, Tomsk, Russia^2

National Research Tomsk State University, Tomsk, Russia^3

关键词: Dynamic hardness;    Functional properties;    Low energy high current pulsed electron beam (LEHCPEB);    Nanoindentation tests;    NiTi shape memory alloys;    Physical-mechanical properties;    Shape recovery ratios;    Surface melting;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/597/1/012044/pdf
DOI  :  10.1088/1757-899X/597/1/012044

学科分类：自然科学（综合）

来源: IOP

【 摘 要 】

This paper presents a research data on investigation of physical-mechanical properties of the surface of NiTi shape memory alloy after low-energy high-current pulsed electron beam (LEHCPEB) treatment in surface melting mode. Investigation of physical-mechanical and functional properties (Young's modulus E IT, dynamic hardness H IT, plasticity characteristic δH, and parameter of shape recovery ratio η) was held by method of instrumented nanoindentation test. Our data suggest that after LEHCPEB treatment physical-mechanical properties of the surface layers of ∼500 nm thickness change in depth from the surface without critical influence to the pseudoelastic properties of NiTi alloy.