英语词汇“beta brass”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

g. Metallurgy. (a) Applied to the second of a series of allotropic forms of iron (see quot. 1949); (b) applied to the second of a range of alloys, as beta brass, the second of a series of alloys of copper and zinc, containing less copper than in alpha brass. Cf. alpha adj. 2.

ΚΠ

1885 Jrnl. Iron & Steel Inst. ii. 618 The author [Osmond] believes..that there are two..varieties of iron, α and β. The crystalline iron α is obtained by tempering at a red heat, followed by a slow cooling. This is transformed into the β variety (which the structure of tempered steel shows to be amorphous) either by a permanent alteration at a low temperature, or by rapid cooling from a red heat..in the presence of carbon, or some other body (manganese, tungsten) exercising the same influence on the..steel.

1895 Jrnl. Iron & Steel Inst. 48 258 A special strong, hard, brittle, allotropic state called β iron.

1914 Jrnl. Inst. Metals 11 105 Plane sections through a bees' honeycomb..a benzene water-foam, and an over-annealed β brass are all very similar in appearance.

1949 R. T. Rolfe Dict. Metallogr. (ed. 2) 24 Beta iron, formerly, a supposed allotropic form of i[ron] stable between..768° and about 900° C., of body-centred cubic form, and only very feebly magnetic. In reality, the change in magnetic susceptibility of α-iron occurring at 768° C. is not associated with any structural transformation and β-iron is no longer recognized as a distinct variety.

单词	beta brass
释义	> as lemmas beta brass g. Metallurgy. (a) Applied to the second of a series of allotropic forms of iron (see quot. 1949); (b) applied to the second of a range of alloys, as beta brass, the second of a series of alloys of copper and zinc, containing less copper than in alpha brass. Cf. alpha adj. 2. ΚΠ 1885 Jrnl. Iron & Steel Inst. ii. 618 The author [Osmond] believes..that there are two..varieties of iron, α and β. The crystalline iron α is obtained by tempering at a red heat, followed by a slow cooling. This is transformed into the β variety (which the structure of tempered steel shows to be amorphous) either by a permanent alteration at a low temperature, or by rapid cooling from a red heat..in the presence of carbon, or some other body (manganese, tungsten) exercising the same influence on the..steel. 1895 Jrnl. Iron & Steel Inst. 48 258 A special strong, hard, brittle, allotropic state called β iron. 1914 Jrnl. Inst. Metals 11 105 Plane sections through a bees' honeycomb..a benzene water-foam, and an over-annealed β brass are all very similar in appearance. 1949 R. T. Rolfe Dict. Metallogr. (ed. 2) 24 Beta iron, formerly, a supposed allotropic form of i[ron] stable between..768° and about 900° C., of body-centred cubic form, and only very feebly magnetic. In reality, the change in magnetic susceptibility of α-iron occurring at 768° C. is not associated with any structural transformation and β-iron is no longer recognized as a distinct variety. extracted from betan. < as lemmas
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> as lemmas