711 非晶質/ナノ結晶ハイブリッドTiNi線材の微細組織と特性(OS5-(1) インプラントおよび生体材料,オーガナイズドセッション)
詳細
Microstructure and properties of Ti-50.9mol%Ni wires after severe cold drawing were studied. X-ray diffractometry, transmission electron microscopy and electrical resistivity measurements revealed that the amorphous was the dominant phase in as-drawn wires. Young's modulus depended strongly on the drawing reduction. The amorphous/nanocrystalline wires after 70% reduction exhibit high tensile strength (>2GPa), high Young's modulud (71 GPa) and large pseudoelastic recovery strain (〜3%). The recovery strain was further improved to 5.8% by aging at 573 K.
