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Anisotropic Behavior of Radiopaque NiTiPt Hypotube for Biomedical Applications
Author(s) -
Lin Zhicheng,
Hsiao HaoMing,
Mackiewicz David,
Anukhin Boris,
Pike Kelly
Publication year - 2009
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.200800403
Subject(s) - materials science , anisotropy , composite material , ultimate tensile strength , characterization (materials science) , hysteresis , stress (linguistics) , stress–strain curve , alloy , deformation (meteorology) , nanotechnology , optics , condensed matter physics , physics , linguistics , philosophy
This paper presents the first characterization of anisotropic stress–strain behavior in micron‐sized specimens cut directly from hypotubes, the starting material for the manufacture of endovascular stents and other biomedical devices, of a new radiopaque alloy NiTiPt. Experimental results show that NiTiPt hypotube has very different anisotropic characteristics when compared to its NiTi counterpart including higher tensile strength and strain, higher stress–strain nonlinearity, smaller hysteresis loop, and sharper tails during loading–unloading.