Influences of Heat Treatment and Grain Size on the Damping Capacity of an Fe–Cr–Al Alloy
Influences of Heat Treatment and Grain Size on the Damping Capacity of an Fe–Cr–Al Alloy
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热处理和晶粒尺寸对 Fe-Cr-Al 合金阻尼能力的影响
DOI：
10.1002/1521-396x(200205)191:1
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
F. Han
中科院分区：
文献类型：
--
作者：
Z. C. Zhou;J. N. Wei;F. Han
研究了热处理工艺和晶粒尺寸对成分为Fe-25 Cr-5Al的Fe-Cr-Al合金阻尼性能的影响。结果表明，退火温度和晶粒尺寸对合金的阻尼性能和应变幅依赖性有显著影响。适度的退火和晶粒尺寸对于较高的阻尼能力是必要的，尽管如果退火不产生相对大的晶粒，则其对阻尼能力的影响很小。该合金经水淬或冷加工后，由于组织中的高内应力而具有相当低的阻尼能力。结果表明，在550 °C附近出现一个弛豫峰，其激活能为2.6（±0.3）eV。提出了该峰起源于Zener弛豫。
The effect of heat treatment and grain size on the damping capacity of an Fe-Cr-Al alloy with composition of (wt%) Fe-25Cr-5Al has been investigated. It has been shown that annealing temperature and grain size have a significant influence on the damping capacity and strain amplitude dependence of the alloy. Moderate annealing and grain size are necessary for a higher damping capacity, although if annealing does not yield relatively large grains, it has little effect on the damping capacity. The alloy has a rather low damping capacity after being water quenched or cold worked due to a high internal stress in the structure. It has been found that a relaxation maximum appears in the internal friction-temperature plot at about 550 °C and its activation energy is 2.6 (±0.3) eV. It is proposed that the peak originates from the Zener relaxation.