| 释义 |
decalescence Metallurgy.|diːkəˈlɛsəns|
[f. de- II. 1 + calescence.]
(See quot. 1954.) So decaˈlescent a.
1893Funk's Stand. Dict., Decalescence. 1910E. F. Lake Composition & Heat Treatment of Steel vi. 68 The temperature again falls uniformly until it reaches..1350° F., at which point the second change takes place..designed Ar 2. After the change has been completed at this point, it again lowers in temperature uniformly to the next point, or Ar 1... After this change takes place, it then gradually lowers to atmospheric temperature. These have been named the decalescent points. 1912A. Sauveur Metallogr. Iron & Steel vii. 2 The notation Ar1 and Ac1 are used for the recalescence point and its reversal... The point Ac1 has been called point of ‘decalescence’ by some writers. 1916D. K. Bullens Steel 417 For the majority of heat-treatment work, it is more important to know the location of the decalescent points than that of the recalescent points. Ibid. 425/2 Decalescence. 1954Gloss. Terms Iron & Steel (B.S.I.) i. 11 Decalescence, absorption of heat without increase of temperature when the metal is heated through the critical points. |