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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Types of mechanical relaxation by hydrogen in intermetallic compounds
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Types of mechanical relaxation by hydrogen in intermetallic compounds

机译：金属间化合物中氢引起的机械弛豫类型

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摘要

Hydrogen in polycrystalline intermetallic compounds generally produces extremely broad damping spectra, indicating the presence of short-range as well as long-range relaxation mechanisms. These are discussed on the basis of vibrating-reed results on Zr65Cu27.5Al7.5, Zr65Cu17.5Ni10Al7.5, and CuZr2 alloys. A relaxation peak at 270 K observed in all three cases is interpreted as a Zener-type relaxation of hydrogen in the CuZr2 lattice. The differences found at higher temperatures - a second relaxation peak in the ternary and quaternary alloys but an exponential increase of damping in CuZr2 - are related to different grain sizes and can be attributed to an 'intercrystalline Gorsky effect' due to elastic anisotropy mismatch strains. (C) 2000 Elsevier Science S.A. All rights reserved. [References: 16]
机译：多晶金属间化合物中的氢通常会产生极宽的阻尼谱，表明存在短程和长程弛豫机制。这些是根据Zr65Cu27.5Al7.5，Zr65Cu17.5Ni10Al7.5和CuZr2合金的振动片结果进行讨论的。在所有三种情况下观察到的在270 K处的弛豫峰均被解释为CuZr2晶格中氢的齐纳型弛豫。在较高温度下发现的差异-三元和四元合金中的第二个弛豫峰，但CuZr2中阻尼的指数增加-与晶粒大小不同有关，并且可以归因于弹性各向异性失配应变而导致的“晶间戈尔斯基效应”。 （C）2000 Elsevier Science S.A.保留所有权利。 [参考：16]

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