Peculiarities of structure and hardening of Ni-Ti alloy surface layers formed by 84Kr15+ ions irradiation at 147 MeV energy at high temperatures

7th International Conference Radiation-thermal Effects and Processes in Inorganic Materials

材料科学;物理学

Poltavtseva, V.^1 ; Larionov, A.^1 ; Zheltova, G.^1

Institute of Nuclear Physics, Almaty, Kazakhstan^1

关键词: High temperature;    Ions irradiation;    MeV energy;    Nano-structured;    NiTi alloys;    Single phase;    Surface layers;    Two phase;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/168/1/012032/pdf
DOI  :  10.1088/1757-899X/168/1/012032

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The consistent patterns of changes in nanostructure and nanohardness of Ni-Ti alloy after irradiation with84Kr15+ions with 147 MeV energy to the fluence of 1•1019m-2at 250 and 3000C temperatures depending on phase composition have been experimentally studied. It was shown that significant (44 - 94%) softening of surface layers for the single-phase and two-phase Ni-Ti alloys is connected with the formation of bubble nanostructured defects and complete sputtering of the process layers. The role of nanostructure in roughness of the irradiated Ni-Ti alloy surface of various phase composition has been established.