Abstract
SEVERAL investigators1,2 have shown that at a temperature near 37° C. anomalies exist in some of the physical properties of pure chromium. In an earlier communication3, we reported measurements which had been made here of the variation with temperature of the Young's modulus and modulus of rigidity of an electroformed tube of chromium which had been annealed for fifteen hours at 544° C, showing that a sharp minimum occurred near 37° C. in the velocity of propagation of longitudinal waves, corresponding to a fall in elastic modulus of about 2 per cent when measured on the fundamental vibration, but only to about 1 per cent when measured on the 8th harmonic. The modulus of rigidity–temperature curve showed only a small stationary region of modulus over a range of about 6° C. above the temperature of minimum longitudinal modulus, similar results being obtained on all measured harmonics.
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PURSEY, H. Thermal Anomaly in the Elastic Constants of Chromium. Nature 172, 864 (1953). https://doi.org/10.1038/172864a0
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DOI: https://doi.org/10.1038/172864a0
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