Abstract
IT is known that the coercive force of tungsten magnet steel is reduced if the steel is maintained for a period at a temperature of 950–1,000°C. prior to hardening. The steel is then said to be 'spoiled'. In some such samples of tungsten steel the compound WC has been detected, and it has been suggested that the tungsten and carbon remaining in solution are insufficient to promote good hardening1,2. Experiments have been made on an unspoiled steel with the following analysis : W, 5.65 ; C, 0.72 ; Cr, 0.27; Si, 0.24; Mn, 0.3 per cent.
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References
Gregg, J. L., "Alloys of Iron and Tungsten", 221–227 (McGraw-Hill, 1934).
Wainwright, C., J. Sci. Instr., 18, 97 (1941).
Sucksmith, W., Proc. Roy. Soc, A, 170, 551 (1939).
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HOSELITZ, K., McCAIG, M. 'Spoiling' of Tungsten Steel. Nature 159, 710 (1947). https://doi.org/10.1038/159710a0
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DOI: https://doi.org/10.1038/159710a0
