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METHOD OF TEMPERATURE-DEFORMATION EFFECT ON TITANIUM-NICKEL ALLOYS WITH NICKEL CONTENT OF 49-51 at WITH SHAPE MEMORY EFFECT
METHOD OF TEMPERATURE-DEFORMATION EFFECT ON TITANIUM-NICKEL ALLOYS WITH NICKEL CONTENT OF 49-51 at WITH SHAPE MEMORY EFFECT
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机译：形状记忆效应对镍含量为49-51 at％的钛镍合金的温度变形影响的方法
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摘要
FIELD: metallurgy.;SUBSTANCE: invention relates to metallurgy, namely, to heat treatment of alloys with shape memory, and can be used in medicine and engineering. Method of processing titanium-nickel alloys with the nickel content of 49–51 at% with the shape memory effect involves thermomechanical processing the billet, thermomechanical inducing the shape memory effect, unloading and heating for the shape recovery. Prior to thermomechanical processing the billet is subject to recrystallization annealing and tempering. Thermomechanical processing used is low-temperature thermomechanical treatment by multipass deformation at the temperature of 18–24 °C until the accumulated deformation degree is 42–60 %, then performed is deformation into the specified shape, its fixation and recrystallization annealing at the temperature of 550–650 °C for 30–70 minutes. Thermomechanical inducing the memory effect is performed by heating up to a temperature over Ak of reverse martensitic transformation, cooling down to the temperature of direct transformation start B2→R, deformation at that temperature by 21–25 % and holding at that temperature for 0.5–3 minutes, cooling down to the temperature of martensitic transformation end of -196 °C, holding at that temperature for 0.5–3 minutes.;EFFECT: implemented is the value of reversible deformation of 18,4 %.;1 cl, 2 dwg, 1 ex
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机译：合金的热处理技术领域本发明涉及冶金，即涉及具有形状记忆的合金的热处理，可用于医学和工程领域。具有形状记忆效应的镍含量为49–51 at％的钛镍合金的加工方法包括热机械加工坯料，热机械诱导形状记忆效应，卸载和加热以恢复形状。在热机械加工之前，对坯料进行重结晶退火和回火。所使用的热机械加工是通过在18–24°C的温度下进行多次变形直至累积的变形度达到42–60％，然后进行变形为指定形状，在固定温度下进行固定和再结晶退火的低温热机械处理。 550–650°C持续30–70分钟。通过加热至马氏体逆相变的A k 之上的温度，冷却至直接相变开始B2→R的温度，在该温度下变形21–25％来执行热机械诱导记忆效应。并在该温度下保持0.5–3分钟，冷却至马氏体转变结束温度-196°C，在该温度下保持0.5–3分钟。;效果：实现的可逆变形值为18,4 ％.; 1 cl，2 dwg，1 ex
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