陆仕平,朱训明,刘建平,胡成博,盛林江,吴树森

• 1:浙江万丰摩轮有限公司
• 2:华中科技大学材料科学与工程学院
• 3:材料成形与模具技术全国重点实验室

摘要(Abstract)：

利用熔盐-金属反应法成功制备了9 mass%TiB_2颗粒原位增强Al-4.5Cu铝基复合材料，研究超声振动处理对团聚状亚微米TiB_2颗粒分布的改善作用。结果表明：利用超声振动产生的空化效应和声流效应，有效消除了熔体中颗粒团聚的现象。经超声处理4 min后，TiB_2颗粒均匀地分散在整个熔体中，由小于100 nm的TiB_2颗粒形成的微小团聚也被打散。复合材料凝固后，有一些小于400 nm的TiB_2颗粒分散在晶界附近的基体中。超声振动处理4 min后，复合材料的屈服强度比基体合金和未超声振动处理的复合材料分别提高119%和64.3%,这主要是由于超声振动处理使得TiB_2颗粒细小并弥散分布在复合材料的基体中，导致Orowan强化和热膨胀错配强化效果增强，从而使其强度增加。

关键词(KeyWords)： 原位TiB_2;铝基复合材料;团聚;超声振动

Abstract:

Keywords:

基金项目(Foundation): 浙江新昌县专精特新重大科技攻关计划项目(ZJTX2205);; 浙江省重点研发计划项目(2022C01203)

作者(Author): 陆仕平,朱训明,刘建平,胡成博,盛林江,吴树森

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