单词 | hypereutectic |
释义 | > as lemmashypereutectic hypereutectic adj. Brit. /ˌhʌɪpəjuːˈtɛktɪk/ , U.S. /ˌhaɪpərˌjuˈtɛktɪk/ (of an alloy of iron) containing a higher proportion of carbon than the eutectic composition (i.e. more than about 4·3%); (in quot. 19022 = hypereutectoid adj., eutectoid adj. itself not having been coined at that date).ΘΚΠ society > occupation and work > materials > derived or manufactured material > metal > steel > [adjective] > containing specific constituents hypereutectic1902 sorbitic1902 pearlitic1904 martensitic1909 hypereutectoid1911 society > occupation and work > materials > derived or manufactured material > metal > alloy > [adjective] > of iron alloy: containing specific proportions hypereutectic1902 hypoeutectic1902 1902 Encycl. Brit. XXIX. 572/2 They [sc. forms of steel] are called hyper-eutectic or hypo-eutectic..according as their carbon-content is above or below the 0·90 per cent. which the eutectic itself contains. 1902 Encycl. Brit. XXIX. 573/2 The undisturbed slow cooling from the molten state of a hyper-eutectic steel containing 1·00 per cent. of carbon. 1912 W. H. Hatfield Cast Iron i. 13 Hypereutectic alloys deposit primary iron~carbide along the line B′C. 1959 A. G. Guy Elem. Physical Metall. (ed. 2) vi. 186 As the composition changes from hypoeutectic (less than eutectic) to hypereutectic (more than eutectic) in terms of metal B, the primary crystals change from alpha phase to beta phase. < as lemmas |
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