| 释义 |
over-ˈageing, vbl. n. Metallurgy.
Also over-aging.
[over- 29 a.]
Prolonged artificial ageing of metal so that its hardness begins to decrease.
1954Gloss. Terms Iron & Steel (B.S.I.) 21 Overageing. 1955Jrnl. Inst. Metals LXXXIII. 529/1 This work provides direct evidence for the supposition that over-ageing during fatigue has a controlling influence on the fatigue strength of precipitation-hardening aluminium alloys. 1970Materials & Technol. III. i. 32 This ‘over-aging’ effect is due to the increased diffusion giving rise to precipitation and agglomeration into more massive particles. |