Abstract
THE addition of lead to high sulphur steels is widely used in order to improve their machinability. Extensive metallographic investigations1–3 have indicated that the lead is distributed as discrete particles in the steel matrix and, more particularly, as envelopes around the manganese sulphide inclusions. The use of scanning electron probe microanalysis convincingly confirms these earlier observations.
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References
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SMITH, T., CLAYTON, D. Distribution of Tellurium in Free-cutting Steels. Nature 198, 380–381 (1963). https://doi.org/10.1038/198380a0
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DOI: https://doi.org/10.1038/198380a0
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