Investigation of the superelastic behavior of a Ti-16Zr-13Nb-2Sn sputtered film by nanoindentation

SURFACE & COATINGS TECHNOLOGY

卷:405

Article

Zhou, Y.¹  Fillon, A.¹  Jabir, H.^1,2  Laille, D.¹  Gloriant, T.¹ 

[1] Univ Rennes, INSA Rennes, CNRS, ISCR UMR 6226, 20 Ave Buttes Coesmes,CS 70839, F-35000 Rennes 7, France

[2] HESAM Univ, CNRS, CNAM, Lab PIMM,UMR 8006,ENSAM, F-75013 Paris, France

关键词: Film;    Sputtering;    Ti alloys;    Microstructure;    Superelastic effect;    Nanoindentation;   

DOI  :  10.1016/j.surfcoat.2020.126690

来源: Elsevier

【 摘 要 】

A new Ti-16Zr-13Nb-2Sn superelastic film incorporating beta-stabilizing and highly biocompatible elements was elaborated by magnetron sputtering. The morphological, crystallographic and microstructural characteristics of the obtained films were studied by scanning electron microscopy, atomic force microscopy, X-ray diffraction, and transmission electron microscopy. Superelastic response of the film was investigated at local scale by nano-indentation using both spherical and Berkovich indenters. The sputter-deposited film revealed nanograined beta microstructure with preferential growth orientation along [110] direction and excellent superelastic recovery at room temperature. Special attention was paid to the indenter geometry influencing reliable evaluation of the superelastic nature of the film. Evolution of the deformation mechanisms during nanoindentation at increasing depths was rationalized by the calculated representative strain beneath the indenting tips and is discussed in this work.

【 授权许可】

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