THE ELASTIC PROPERTIES OF ALUMINUM AT HIGH-TEMPERATURES
THE ELASTIC PROPERTIES OF ALUMINUM AT HIGH-TEMPERATURES
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DOI：
10.1016/0022-3697(87)90147-8
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发表时间：
1987-01-01
影响因子：
4
通讯作者：
ISHIKAWA, T
中科院分区：
文献类型：
--
作者：
MCLELLAN, RB;ISHIKAWA, T
用细线超声技术测量了高达850K的多晶铝的杨氏模量和剪切模量，发现在高温下都有大的弹性模量缺陷，并用一个简单的晶界松弛模型对测量的弹性行为进行了分析。从数据与模型的比较中提取的晶界扩散激活能与以前测定的晶界扩散激活能接近。
Thin-line ultrasonic techniques have been used to measure the Young's modulus and shear modulus of polycrystalline aluminum up to 850 K. In both cases, large modulus defects are found at high temperatures.A simple model for grain boundary relaxation is used to analyze the measured elastic behavior. The value of the activation energy for grain boundary diffusion extracted from the comparison of the data with the model is close to previous determinations of this energy.