本文系统地研究了结构驰豫对Cu58.1Zr35.9AI6块状非晶合金弹性性能的影响.将Cu58.1Zr35.9AI6非晶合金在150℃、300℃、450℃分别保温1 h.测量退火样品的纵、横波声速,并推算其弹性性能.结果表明:随退火温度的升高,声速与弹性性能呈现逐渐增加的趋势.低温驰豫时声速与弹性性能变化缓慢,高温驰豫时增加明显.基于结构驰豫谱模型分析了上述现象的产生在于:提高温度,原子有足够的条件进行中程与长程扩散,通过发生原子的积聚重排,大量自由体积的湮灭,使非晶样品的有序度得到大大的改善.
The effect of structure relaxation on the elastic property of Cu based bulk metallic glass was investigated systematically. Cu58.1Zr35.9AI6 metallic glass was annealed at 150℃ ,300℃ and 450℃ for 1 hour. The longitudinal wave velocity and transverse wave velocity are measured so that the elastic property could be deduced. The result re-veals that the velocity and elastic properties increases gradually with the elevation of the annealing temperature. A-coustic velocity and elastic indexes changes slightly at low-temperature relaxation, they increase obviously at high-temperature relaxation. These phenomena were analyzed in terms of the structure relaxation mode. The reasons is that atoms have sufficient conditions for intermediate-range and long-range diffusion and the order degree is greatly improved by the accumulation and rearrangement of atoms as well as the large annihilation of the free volume with the increasing temperature.
参考文献
| [1] | 曹标;陈振华;黄培云 .金属玻璃的结构驰豫[J].材料导报,1998,12(06):9-12. |
| [2] | Koebrugge O W .Structural relaxation in amorphous Pd40 Ni40 P30[J].Acta Metallurgies et Materialia,1992,40(04):753-760. |
| [3] | Kiss L F .Determination of reversible Curie point relaxation spectra in Fe-B metallic glasses[J].Journal of Magnetism and Magnetic Materials,1994,133(1-3):334-337. |
| [4] | 刘军民;水嘉鹏 .非晶态合金的结构弛豫过程[J].金属学报,1995,13(07):318-322. |
| [5] | Deng D;Argon A S .Analysis of the effect of aging on distributed relaxations,hardness,and embrittlement in Cu59Zr41 and Fe80 B20 glasses[J].Aeta Metallurgica,1986,34(10):2025-2028. |
| [6] | 王汝菊.超声相比较方法在固体弹性性能研究中的应用[J].高压物理学报,1992(02):99. |
| [7] | 王敬丰,柳林,邹辉,蒲健,肖建中.大块金属玻璃Pd40Ni10Cu30P20结构弛豫的研究[J].稀有金属材料与工程,2005(01):98-101. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%