Construct · 1 fields · 1 citations

heat-affected zone: a standalone construct

One name. One construct. A landmark on the map.

● anchor · a single construct in one field Nearest construct by meaning·not indexed
heat-affectedzone1 CONSTRUCTHeat-affected zoneKOU · HAZ

A single standalone construct; nearby constructs are located against it in the Collider. Tap a field for its definition, unit, and measures.

Welding & joining

Base metal changed by weld heat but not melted

The heat-affected zone (HAZ) is the band of base metal next to a weld that was never melted but was heated enough to change its microstructure and properties (grains may coarsen, phases may transform, and the metal may harden or soften), so it is often where a welded joint is weakest or most prone to cracking. Its extent and character are set by the peak temperature reached and how fast the region cooled. Kou's Welding metallurgy treats the HAZ sub-regions and the thermal cycles that produce them. The referent is a zone of solid-state property change bordering a weld.[1]

Unit
The width and altered properties of the unmelted band beside a weld
Recovery means
Properties degraded in the HAZ can sometimes be restored or improved by post-weld heat treatment
Measured by
Characterised by HAZ width, hardness surveys across the weld, microstructure, and toughness of the affected band

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Nearby constructs

weldability1 fields · 1 citationsanchor · a single construct in one fieldband2 fields · 2 citationsjingle · one word, two constructsbase3 fields · 4 citationsjingle · one word, three constructs

References

  1. Kou, S. (2003). Welding metallurgy (2nd ed.). John Wiley & Sons. ISBN 9780471434917

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