V2EX undercool

Undercool

Definition 定义

undercool(动词):使(液体、熔体)低于其正常凝固/结晶温度而仍暂时保持未凝固状态;常用于材料科学、冶金学与物理学语境。(更常见名词形式为 undercooling,也常与 supercool 互换使用。)

Pronunciation 发音

/ndrkul/

Examples 例句

If you undercool the melt, it may stay liquid for a while.
如果你让熔体发生欠冷,它可能会在一段时间内仍保持液态。

By carefully controlling how much we undercool the alloy below its liquidus temperature, we can change the nucleation rate and refine the final grain structure.
通过精确控制合金在液相线温度以下的欠冷程度,我们可以改变形核速率,并细化最终的晶粒组织。

Etymology 词源

由前缀 **under-**(“在……之下、低于”)+ cool(“冷却”)构成,字面意思是“冷到(某温度)以下”。在科学语境中具体指“低于平衡凝固/结晶温度的冷却”,强调“温度低于应当开始相变的点,但相变尚未立即发生”。

Related Words 相关词

Literary Works 文学作品/著作中的用例

(该词主要出现在科学与工程类著作中,而非小说等文学文本。)

  • Phase Transformations in Metals and Alloys(《金属与合金的相变》) David A. Porter, Kenneth E. Easterling 等
  • Introduction to Materials Science for Engineers(《工程材料科学导论》) William D. Callister Jr.
  • Physical Metallurgy Principles(《物理冶金学原理》) Robert E. Reed-Hill, Reza Abbaschian
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