Mg-6Gd-3Y-0.5Zr镁合金和ZL114A铝合金阻尼性能
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作者单位:

1.清华大学机械工程系,北京 100084;2.北京宇航系统工程研究所,北京 100076;3.郑州大学,郑州 450001

作者简介:

孟德浩,1986年出生,高级工程师,主要从事箭体结构设计与镁合金研究工作。E-mail:dh_meng0015@163.com

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基金项目:

静压支撑-单点增量成形制件减薄率研究 林允博 李言 杨明顺 柏朗 赵仁峰(1)


Damping Performance of Mg-6Gd-3Y-0.5Zr Magnesium Alloy and ZL114A Aluminum Alloy
Author:
Affiliation:

1.Department of Mechanical Engineering, Tsinghua University,Beijing 100084;2.Beijing Institute of Astronautical Systems Engineering,Beijing 100076;3.Zhengzhou University,Zhengzhou 450001

Fund Project:

Study on Thinning Rate of Static Pressure Support-Single Point Incremental Forming Parts ……………………………………………… LIN Yunbo LI Yan YANG Mingshun BAI Lang ZHAO Renfeng(1)

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    摘要:

    航天结构飞行过程中,温度、应变振幅等会有大幅的变化,为了研究服役环境对阻尼的影响,采用DMA测试仪研究了Mg-6Gd-3Y-0.5Zr镁合金和ZL114A铝合金材料内部阻尼随服役环境的变化。结果表明:两种材料阻尼都随应变振幅的增大而增大,且同样应变振幅下Mg-6Gd-3Y-0.5Zr阻尼性能优于ZL114A;两种材料阻尼都随温度的升高而增大,Mg-6Gd-3Y-0.5Zr和ZL114A合金330℃时阻尼均值分别是30℃时2.1倍和1.3倍,可知Mg-6Gd-3Y-0.5Zr合金对温升更敏感,当结构温升较大时,其阻尼应作为变量进行考虑。

    Abstract:

    During the flight of the aerospace structure, the temperature and strain amplitude, etc. will change significantly. In order to study the effect of service environment on damping, the internal damping of Mg-6Gd-3Y-0.5Zr magnesium alloy and ZL114A aluminum alloy with the variation of service environment were studied by using DMA tester. The results show that the damping of both Mg-6Gd-3Y-0.5Zr and ZL114A materials gradually increases with the increase of strain amplitude, and under the same amplitude, the damping performance of Mg-6Gd-3Y-0.5Zr is better than that of ZL114A. In addition, the damping of both materials increases with the increase of temperature. The average damping values of Mg-6Gd-3Y-0.5Zr and ZL114A alloy at 330℃ are 2.1 and 1.3 times that at 30℃, respectively. It can be seen that Mg-6Gd-3Y-0.5Zr alloy is more sensitive to temperature rise, when the structure temperature rise is large, its damping should be considered as a variable.

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孟德浩,李培杰,徐文涛,袁文全,王端志. Mg-6Gd-3Y-0.5Zr镁合金和ZL114A铝合金阻尼性能[J].宇航材料工艺,2020,50(6):98-110.

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  • 收稿日期:2020-03-23
  • 最后修改日期:2020-11-15
  • 录用日期:2020-05-06
  • 在线发布日期: 2021-01-15