制度下的阻尼性能
(1. 郑州大学北区 材料研究中心，郑州 450002；
2. 郑州大学北区 机械与电子工程学院，郑州 450002；
3. 中国科学院 固体物理研究所 内耗与固体缺陷开放实验室，
合肥 230031)
摘 要: 采用喷射共沉积方法制备了6061Al/SiCp金属基复合材料(MMC)，研究了5种热处理制度对 其阻尼性能的影响。结果表明：不同的热处理状态材料，常温下其阻尼基本没有变化，高温下阻尼则显著不同，在100～270℃温度范围内，阻尼能力的大小顺序为炉冷＞空冷＞-70℃淬火＞原样(挤压态)＞-195℃淬火＞水淬，且超过180℃时，所有试样的阻尼能力均可达到1×10-2以上；在本研究的温度和应变振幅测试 范围内，模量随温度的升高表现为单调下降，相同频率下的内耗值不随应变振幅变化。
关键字: 喷射沉积；6061Al/SiCp复合材料；热处理；阻尼性能
MMC produced by spray atomization
and deposition under different heat
treatment systems
（1. Research Center for Materials, Zhengzhou University (Northern district),
Zhengzhou 450002, China;
2. College of Mechanical and Electronic Engineering,
Zhengzhou University (Northern district), Zhengzhou 450002, China；
3. Laboratory of Internal Friction and Defects in Solids, Institute of
Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China）
Abstract:Influence of different heat treatments on the damping properties of the 6061Al/SiCp MMC fabricated by spray-atomization and deposition was studied. The results show that damping value changes slightly at low temperature but remarkably at elevated temperature. At 100～270℃, the damping capacity rank from great to small as follows: sample cooled in furnace, sample cooled in the air, sample quenched at -70℃, sample without heat treatment, sample quenched at -195℃ and sample quenched in water. In addition, the damping capacities of all the samples can be above 1×10-2 when temperature is above 180℃. Within the range of measuring temperature and strain amplitude, the shear modulus decline monotonously as temperature rises, and damping values don't change with the strain amplitude at the same frequency.
Key words: spray atomization and deposition; 6061Al/SiCp MMC; heat treatment; damping capacity
