研究热处理及变形对Cu73Al17Mn10形状记忆合金显微组织和阻尼性能的影响.结果表明,合金在铸态下主要为L21结构的B母相组织,经时效热处理后,转变为板条状马氏体.在室温下,该合金的低应变阻尼为弛豫型阻尼,高应变阻尼为静滞后型阻尼.均匀化退火后合金的内耗低于铸态.经轧制变形后,晶粒得到细化,有利于阻尼性能的提高.时效处理后,板条状马氏体变细,合金的阻尼性能得到进一步提高.
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