The effect of Si addition on microstructure and martensitic transformation of the Ni-Ti-Si SMA was investigated in this work. The Ni_49−0.5xTi_51−0.5xSi_x alloys with various amounts of silicon (2.1 ≤ × ≤ 21.1 at. pct) were prepared by the self-propagating high-temperature synthesis (SHS). Temperatures of the phase transformation increase with the increasing amount of silicon in the samples, which also causes the change of the Ti/Ni ratio in the matrix. The temperatures of austenite transformations are around the temperature of 373 K.

中文翻译：

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硅添加对NiTiSi形状记忆合金马氏体相变和组织的影响

在这项工作中，研究了Si添加对Ni-Ti-Si SMA的组织和马氏体相变的影响。通过自蔓延高温合成（SHS）制备了具有各种硅含量（_{2.1≤ × ≤21.1 at。pct）}的Ni _{49-0.5 x} Ti _{51-0.5 x} Si _x合金。相变温度随着样品中硅含量的增加而增加，这也引起基体中Ti / Ni比值的变化。奥氏体转变温度在373 K附近。