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EFFECT OF SCANDIUM AND YTTRIUM ON MARTENSITIC TRANSFORMATIONS IN TiNi-BASED ALLOYS

机译:锶和钇对TiNi基合金马氏体相变的影响

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The paper examines the effect of scandium and yttrium additions (up to 5 and 10 at.%, respectively) on martensitic transformations and shape memory effect in TiNi. The martensitic temperature decreases differently in quenched TiNi-ScNi and TiNi-YNi alloys. The martensitic temperature dependence on scandium concentration is linear, and doping TiNi alloy with yttrium smoothly decreases the temperature to about 30 't' at 10 at. % yttrium. The martensitic transformations in both systems are accompanied by the 100% shape memory effect. When titanium is replaced by a small amount of scandium (0.01 at. %.), the nature and parameters of martensitic transformation remain unchanged.
机译:本文研究了添加and和钇(分别高达5和10 at。%)对TiNi中马氏体相变和形状记忆效应的影响。 TiNi-ScNi和TiNi-YNi淬火合金中的马氏体温度不同地降低。马氏体温度对scan浓度的依赖性是线性的,并且掺钇的TiNi合金在10 at时将温度平稳地降低到大约30't'。 %钇。两个系统中的马氏体转变都伴随着100%的形状记忆效应。当钛被少量of(0.01原子%)代替时,马氏体转变的性质和参数保持不变。

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