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NiMnGa alloy with a controlled finish point of the reverse transformation and shape memory effect

机译:NiMnGa合金具有受控终点的逆相变和形状记忆效应

摘要

In an NiMnGa alloy represented by the chemical formula of Ni2+XMn1-XGa, a composition ratio parameter X (mol) is selected within a range of 0.10 ≦ X ≦ 0.30. With this composition, the finish point of the reverse transformation of the martensitic transformation can be selected to a desired temperature within the range between -20°C and 50°C , while the Curie point is also selected to a desired temperature within the range between 60°C and 85°C . The alloy has the shape memory effect by the martensitic transformation and the reverse transformation. Furthermore, the alloy is induced with the reverse transformation by application of an external magnetic field at the martensite phase to exhibit the shape recovery.
机译:在化学式为Ni 2 + X Mn 1-X Ga的NiMnGa合金中,组成比参数X(mol)在0.10≤范围内选择。 X≤0.30。通过该组成,可以将马氏体相变的逆相变的终点选择为-20℃至50℃之间的期望温度,而居里点也选择为200℃至50℃之间的期望温度。 60°C和85°C。该合金通过马氏体相变和逆相变具有形状记忆作用。此外,通过在马氏体相上施加外部磁场以逆相变诱导合金,以表现出形状恢复。

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