概述了TiNiNb宽滞后形状记忆合金不同状态的显微组织、性能特点及其工程意义，在此基础上介绍了TiNiNb宽滞后形状记忆合金在航空航天、军工产品、建筑桥梁和汽车等结构中的应用情况，分析了相关的焊接技术现状。%The microstructure, properties character at different condition and the engineering sig-niifcance of TiNiNb wide hysteresis shape memory alloy are summarized. On this basis, the situation of engineering application of TiNiNb wide hysteresis shape memory alloy in aviation and aerospace ifelds, military products, bridge constructions, buildings and motor vehicles is recommend-ed. At last ,the welding processes is analyzed.
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