The influence of metal grain structure on the attenuation of an ultrasonic acoustic wave
The influence of metal grain structure on the attenuation of an ultrasonic acoustic wave
复制标题
金属晶粒结构对超声波衰减的影响
DOI：
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发表时间：
1950
期刊：
影响因子：
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通讯作者：
Robert K. Roney
中科院分区：
文献类型：
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作者：
Robert K. Roney
介绍了研究超声波在固体中的传播及其在冶金中的应用的装置。特别说明了冷加工铝中衰减的各向异性和退火的影响。在平均晶粒直径为0.17 mm的物体中，可以识别出单个晶体面的反射。对Mason和McSkimin(9)提出的晶粒尺寸对波衰减的理论影响以及Roth(7)报告的经验关系进行了批判性讨论。这一理论被扩展到从梅森探索到罗斯报道的全部范围。实验结果表明，对于非对称晶粒结构的材料，除平均晶粒尺寸外，其他因素也有影响。
Apparatus is described for the study of the propagation of ultrasonic acoustic waves in solid bodies and its applications in metallurgy. In particular, the anisotropy of attenuation in cold worked aluminum and the effect of anneal are demonstrated. Reflections from individual crystal faces are identifiable in bodies with average grain diameter of 0.17 mm. A critical discussion is given of a theoretical effect of grain size on wave attenuation as advanced by Mason and McSkimin(9), and an empirical relation reported by Roth(7). The theory is extended to cover the complete range from that explored by Mason to that reported by Roth. Experimental deviation from the theoretical effect indicates other factors besides average grain size are effective in materials with asymmetrical grain structure.