生体用Ti-29Nb-13Ta-4.6Zr合金の力学的特性に及ぼす時効処理の影響

摘要: The relationships between mechanical properties and microstructure of Ti-29Nb-13Ta-4.6Zr in under aged, peak aged over conditions at various aging temperatures were investigated. maximum Vickers hardness values 573 K, 673 K 723 are obtained times around 2419.2 ks, 3024 ks 1209.6 respectively. ω phase precipitates β relatively low temperature, while α higher K. At an temperature that lies the early stage aging, but longer time. precipitation site changes from intragrain to grain boundary time when is tensile strength increases up a with increasing time, conditions, decreases. While elongation decreases every temperature. fatigue greater than precipitates. little due coarsening precipitated grain.