Transactions of the American Institute of Mining, Metallurgical and Petroleum Engineers Volume 44

Transactions of the American Institute of Mining, Metallurgical and Petroleum Engineers Volume 44

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1913 edition. Excerpt: ...in (32), and this seems a permissible one, then the data seem explicable in the simpler way set forth in (28) to (31). Further, the Gutowsky data on which Prof. Ruff bases his calculations seem insufiicievnt in view of the capriciousness of the phenomena and the difficulty of reconciling some of them with our natural conceptions. My purpose thus is to bring the matter up for discussion, and only as a basis for discussion do I ofier my tentative explanation. The matter enclosed in parentheses in the text of these twenty propositions represents ideas of my own for which Professor Rufl is not responsible. p General Outline.--(1) to (21), pp. 432 to 442, general outline of Rufi's premises. (22), p. 443, general meaning of his diagram. (23) to (26), pp. 443 to 448 Ruff on the eutectic temperature. (26A) to (35), pp. 448 to 456, other positions of the eutectic temperature. (36) p. 457. Capriciousness of the rate of graphitization and of the arrest and recalescence temperatures. (37), p. 462. Graphitization goes on at temperatures below those admitted by Prof. Ruff. (38) p. 465. How dominant is the bodenkoerper? (39) p. 467. Conclusion. (1) Carbon when dissolved either in the molten iron between say 1,800 and 1,135, or in the austenitic solid iron above the bottom of the transformation range, A1 (say 725), exists almost solely as tri-ferrous carbide, Fe3C, called cementite. (P. 460, 12.) These and the following page numbers refer to Prof. I Rufi"s paper, lIetallur_qie, vol. viii., 1911. The section numbers in parentheses refer to the present paper. (2) Between these temperatures, say 725 and 1,800, the quantity of carbon which exists in the elemental state in solution in the iron is so small that the true graphite-iron diagram plays...show more

Product details

  • Paperback | 272 pages
  • 189 x 246 x 14mm | 490g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236928733
  • 9781236928733