Anomalies in the elastic constants and thermal expansion of vanadium single crystals in the range 180 to 260 K are reported and discussed in terms of a model of precipitation of hydrogen impurities. An extension of the impurity precipitation model is used to explain the appearance of sharp anomalies in the temperature dependence of the nuclear-acoustic-resonance linewidth in tantalum single crystals.
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Smith et al. (1969) studied this question.
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