NiCoMnIn/Mg智能复合材料研究

项目名称： NiCoMnIn/Mg智能复合材料研究

项目编号： No.51201044

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 金属材料学科

项目作者： 田兵

作者单位： 哈尔滨工程大学

项目金额： 25万元

中文摘要： 结合磁性记忆合金NiCoMnIn具有高响应频率、高阻尼和大磁诱发应变的优点和金属镁具有轻质和良好阻尼的优点，尝试制备具有高阻尼和磁驱动属性的NiCoMnIn颗粒增强镁基智能复合材料。本项目首先制备不同成分的NiCoMnIn合金块材，研究块材的马氏体相变、阻尼和磁诱发相变性能。然后利用机械球磨的方法将合金块材粉碎成细小的合金颗粒，将球磨后的颗粒进行不同工艺的真空热处理退火，研究颗粒显微组织（颗粒形貌和尺寸、晶粒尺寸等）对热诱发和磁诱发马氏体相变性能的影响，确定具有良好功能特性颗粒的制备工艺。利用放电等离子体烧结的方法制备NiCoMnIn颗粒/镁复合材料，研究复合材料显微组织对复合材料力学性能、阻尼性能和磁诱发相变应变的影响规律，优化复合材料制备工艺，确定具有高阻尼和磁驱动性能NiCoMnIn颗粒/镁智能复合材料的设计准则和制备工艺，为发展新型轻金属基智能复合材料提供实验参考。

中文关键词： 镁基复合材料；磁性记忆合金颗粒；马氏体相变；显微组织；力学性能

英文摘要： NiCoMnIn particles reinforced Mg matrix smart composites with good damping property and magnetic driving performance are proposed and investigated in this project by combining the merits of high response frequency, good damping property and large magnetic field-induced strain for NiCoMnIn magnetic shape memory alloy and the advantages of light weight and good damping property for pure Mg. First, the NiCoMnIn bulk alloys with various compositions are prepared, and the martensitic transformation, damping property and magnetic field-induced phase transformation property are investigated. Then, the bulk alloys are crushed and ball milled to be small particles, which are annealed subsequently under vacuum at different temperatures. The effect of microstructure (morphology, particle size and grain size etc.) of the particles on the thermal-induced and magnetic field-induced martensitic transformation performance is studied, based on which the preparation process for making particles with good functional properties is confirmed. The NiCoMnIn particle/Mg composites are prepared using spark plasma sintering technology under protection of Ar atmosphere. The effect of microstructure of the composites on the mechanical property, damping property and magnetic field-induced phase transformaton strain is investigated and then

英文关键词： Mg matrix composite；Magnetic shape memory alloy particle；Martensitic transformation；Microstructure；Mechanical property