Abstract
IN the course of some work on crystal-grain phenomena in creep specimens of aluminium alloys, we have used the polarized light technique for microscopic examination described by Hone and Pearson1, and found clear evidence of the original crystals breaking down into sub-crystals under certain conditions of deformation. In this technique, any grain contrast seen is due to differential orientation in the aluminium, at least with unstrained metal.
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References
Hone, A., and Pearson, E. C., Metal Progress, 53, 363 (1948).
Wilms, G. R., and Wood, W. A., J. Inst. Metals, 75, 693 (1949).
Lacombe, P., and Beaujard, L., J. Inst. Metals, 74, 1 (1947).
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MCLEAN, D., TATE, A. & FARMER, M. Sub-Crystals in Aluminium Observed with Polarized Light. Nature 165, 70 (1950). https://doi.org/10.1038/165070a0
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DOI: https://doi.org/10.1038/165070a0
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