V2EX heat-affected zone

Heat-Affected Zone

释义 Definition

热影响区(HAZ):在焊接、切割等热加工过程中,未发生熔化但因受热而导致组织与性能发生变化的母材区域(例如晶粒长大、硬度变化、韧性降低或增加等)。该术语主要用于焊接冶金与材料工程语境。

例句 Examples

The heat-affected zone is narrower when the welding speed is higher.
焊接速度越高,热影响区通常越窄。

In high-strength steels, the heat-affected zone can become brittle if the thermal cycle causes unfavorable microstructural transformations.
在高强度钢中,如果热循环引发不利的显微组织转变,热影响区可能会变脆。

发音 Pronunciation (IPA)

/hit fektd zon/

词源 Etymology

该术语为工程复合名词:heat-affected(“受热影响的”)+ zone(“区域”)。随着现代焊接技术发展,为了区分熔合区/焊缝金属(fusion zone)与周围因热而改变但未熔化的母材区域,行业中逐步固定使用“heat-affected zone(热影响区)”这一表达。

相关词 Related Words

文学与著作 Literary Works

  • Welding Metallurgy(Sindo Kou)讨论焊接热循环与热影响区组织/性能变化。
  • Metallurgy of Welding(J. F. Lancaster)系统介绍焊接冶金,包含热影响区与相变。
  • ASM Handbook, Volume 6: Welding, Brazing, and Soldering(ASM International)在焊接工艺与材料章节中频繁使用“heat-affected zone”。
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