Transactions . cent. Si to 860° for 6 percent, alloy, with a flat region in the curve from 3 to 4 per cent. Si. Noaccurate determination of this point has been undertaken by the presentauthor, but it has been roughly determined to lie between 730° and 750°. In the preliminary experiments, some of which have been describedin a previous paper, it was found that practically all of these steels, whenannealed to 1,200° C. or higher, showed grains of comparatively largesize. These grains varied in size, however, from about 4 sq. mm. to 50sq. cm. (see Figs. 1 and 2) under the same conditions of annea
Transactions . cent. Si to 860° for 6 percent, alloy, with a flat region in the curve from 3 to 4 per cent. Si. Noaccurate determination of this point has been undertaken by the presentauthor, but it has been roughly determined to lie between 730° and 750°. In the preliminary experiments, some of which have been describedin a previous paper, it was found that practically all of these steels, whenannealed to 1,200° C. or higher, showed grains of comparatively largesize. These grains varied in size, however, from about 4 sq. mm. to 50sq. cm. (see Figs. 1 and 2) under the same conditions of anneal, and itwas for the purpose of determining the cause of this difference in sizethat the experiments herein described were undertaken. From a preliminary study of the chemical composition of the specimens 1 Melallographist, vol. i, No. 4, pp. 289, 325 (Oct., 1898). 2 Journal of Industrial and Engineering Chemistry, vol. v, No. 6 pp 452 to 458(June, 1913). 3Comples rendus, vol. clvi, pp. 1374 to 1376 (1913).. I 2 P=H fe
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
