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Effect of heat treatments on the structure and properties of a small-diameter thin-walled tube of a medical nickel titanium alloy

机译:热处理对医用镍钛合金小径薄壁管的结构和性能的影响

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The present study examines the effect of annealing at temperatures of 300-500°C on the structure and properties of a thin-walled nitinol tube of composition Ti_(49.1)Ni_(50.9) used for the manufacture of intravascular stents. Annealing temperature dependences are obtained for the martensitic transformation temperatures, the size of the structural elements of the grainsubgrain structure, phase composition, pseudo-yield stress, and ultimate strength. The effect of the Ti_3Ni_4 particle precipitation in aging during annealing at different temperatures on the obtained dependences is analyzed.
机译:本研究研究了在300-500℃的温度下退火的影响,用于制造血管内支架的薄壁镍钛矿管的结构和性质。 为马氏体转化温度获得退火温度依赖性,粗皂生物结构,相组合物,伪屈服应力和极限强度的结构元素的尺寸。 分析了Ti_3Ni_4颗粒沉淀在所得依赖性的不同温度下的退火期间老化的影响。

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