利用动态机械分析仪(DMA)研究了热处理工艺对商业AZ91D镁合金阻尼性能的影响规律.研究结果表明:热处理对AZ91 D镁合金的阻尼性能有较明显的影响.时效处理态AZ91D镁合金的临界脱钉应变振幅小于固溶处理态.当应变振幅大于临界应变振幅,合金的阻尼值迅速升高.随着测试温度的升高,合金的阻尼值升高,在临界温度之前以位错阻尼机制为主,当温度超过临界温度则以晶界滑动为主要阻尼机制.
参考文献
[1] | 曾荣昌,柯伟,徐永波,韩恩厚,朱自勇.Mg合金的最新发展及应用前景[J].金属学报,2001(07):673-685. |
[2] | James D W .High Damping Metals for Engineering Application[J].Materials Science and Engineering,1969,4:1-8. |
[3] | Sugimoto K;Niiya K et al.A Study of Damping Capacity in Magnesium Alloys[J].Transactions of the Japan Institute of Materials,1977,18:277-288. |
[4] | 方前锋.高阻尼材料的阻尼机理及性能评估[J].物理,2000(09):541. |
[5] | Sugimoto K;Matsui K et al.Effect of Crystal Orientation on Amplitude-Dependent Damping in Magnesium[J].Transactions of the Japan Institute of Materials,1975,16:647-655. |
[6] | Granato A;Lucke K .Application of Dislocation Theory to Internal Friction Phenomena at High Frequencies[J].Journal of Applied Physics,1956,27:789-805. |
[7] | Granato A;Lucke K .Theory of Mechanical Damping Due to Dislocation[J].Journal of Applied Physics,1956,27:593-593. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%