Abstract
THE grain size of the ultra-strong, ausformed steels is probably an important factor in their strength and ductility, but it is yet uncertain. The structures are so fine and complex that even the electron microscope has not hitherto revealed the grain structure clearly. However, a flexible dark field technique described previously, using the EM6 electron microscope, has been found to reveal it satisfactorily1.
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References
Hale, K. F., and McLean, D., Nature, 201, 696 (1964).
Petch, N. J., Phil. Mag., 3, 1089 (1958).
Duckworth, W. E., and Taylor, P. R., I.S.I. Special Report 86 (1964).
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HALE, K., MCLEAN, D. Grain Size of Ausformed Steel. Nature 205, 1000–1001 (1965). https://doi.org/10.1038/2051000a0
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DOI: https://doi.org/10.1038/2051000a0
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