制备不同成分的TiNbSn合金,分别进行了DTA、XRD和TEM分析.结果表明,随着Sn含量的增加,TiNbSn合金晶粒尺寸减小;当Sn含量≤4.2mol%时,合金未发生马氏体相变.当Sn含量为4.71mol%和5.02mol%时,合金在加热过程中热弹性马氏体消失,在冷却时形成.这两种合金具有对室温相以及高温相的形状记忆效应.
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