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发明公开
CN101713036A 高强度高阻尼的Ti-Ni-Nb-Mo形状记忆合金及加工工艺 失效 - 权利终止

高强度高阻尼的Ti-Ni-Nb-Mo形状记忆合金及加工工艺
摘要：
本发明涉及TiNi基形状记忆合金强度和阻尼性能的改善技术，具体地说是一种高强度高阻尼的Ti-Ni-Nb-Mo形状记忆合金及加工工艺。按原子百分比计，合金化学成分如下：镍43％～46％，铌8.0％～12.0％，钼0.1％～4.0％，余量为钛和不可避免的杂质。本发明以TiNi合金为基，通过添加Nb元素和少量的Mo元素，调整合金元素含量及Ti/Ni原子比，经过适当的热加工及热处理工艺，合金的室温屈服强度高于300MPa，断裂强度大于800MPa，延伸率超过了25％。合金在马氏体态的阻尼性能比传统的Ti44Ni47Nb9合金高，并且Tanδ大于0.015。本发明可用于结构振动和被动控制，用于设计智能阻尼元件和智能振动隔离器。
摘要（英）：

The invention relates to an improved technology of the strength and the damping property of a TiNi base shape memory alloy, in particular to a high-strength high-damping Ti-Ni-Nb-Mo shape memory alloy and a processing process. Metered by atomic percent, the alloy comprises the following chemical components: 43-46 percent of nickel, 8.0-12.0 percent of niobium, 0.1-4.0 percent of molybdenum and the balance of titanium and unavoidable impurities. In the invention, TiNi alloy is used as a base, and through adding Nb elements and a small quantity of Mo elements and adjusting the content of the alloy elements and the atomic ratio of Ti to Ni and through a proper hot processing and heat treatment process, the yield strength of the alloy at room temperature is higher than 300 MPa, the breaking strength is larger than 800MPa, and the elongation exceeds 25 percent. The martensite damping property of the alloy is higher than that of the traditional Ti44Ni47Nb9 alloy, and Tan delta is larger than 0.015. The shape memory alloy can be used for structural vibration and passive control as well as for designing intelligent damping elements and intelligent vibration isolators.

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