| 单词 | age-hardening |
| 释义 | > as lemmasage-hardening age-hardening n. hardening which occurs as a material ages; (Metallurgy) hardening occurring in certain alloys on storage at ambient temperature, or on mild heat treatment, following quenching; cf. precipitation hardening n. at precipitation n. Compounds. ΚΠ 1916 U.S. Patent 1,178,142 3/1 A properly made floating soap prepared in accordance herewith..may be free lathering and not subject to serious age-hardening. 1921 Jrnl. Inst. Metals 26 345 The extent of the age-hardening which takes place is roughly proportional to the amount of magnesium silicide in solution at the moment of quenching. 1979 Daily Tel. 31 Dec. 13/3 Motor-body steel has to be used quickly because of its age-hardening properties. 1994 J. Milne Getting Back ii. 23 Once the surface snow layers are disturbed by the wind, age-hardening is initiated and these layers become harder than the undisturbed ones underneath. 2001 R. W. Cahn Coming of Materials Sci. iii. 99 Age-hardening is a good example of a nucleation-and-growth transformation. < as lemmas |
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