heat-affected zone


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heat-affected zone

[′hēt ə¦fek·təd ′zōn]
(metallurgy)
The zone within a base metal that undergoes structural changes but does not melt during welding, cutting, or brazing.
References in periodicals archive ?
This additive manufacturing process builds up and repairs the surface of the metal part without creating a heat-affected zone that would occur during welding or high temperature thermal spray.
Adding garnet to the stream for abrasive waterjet, a process invented at Flow, slows the process somewhat, but increases accuracy, (as the stream thins and cuts become more precise), all with no heat-affected zone or work-hardening on metal parts.
The main purpose of the rumbling action can be to stress-relieve case hardening in the heat-affected zone (HAZ) around the component edges.
Ascent's traveling laser-welding robot minimizes the heat-affected zone and does not introduce high thermal loads into the structure.
By removing ions from the surface, electropolishing is effective in removing the outer skin of metal, containing the discoloration in the heat-affected zone.
This combined depth is called the heat-affected zone and it actually can be measured under magnification.
For instance, the heat-affected zone (HAZ) is significantly smaller; at only micrometers across, the HAZ of the welding process does not affect nearby sensitive components.
Also, the HFW process has much better control over weld and heat-affected zone (HAZ) hardness, often causes attributed to pipeline failure.
This saw, according to the supplier, also is well suited for cutting stainless steels, Inconel, and other highly alloyed pipe without leaving a heat-affected zone.
Among the topics are inertia friction welding for aerospace applications, hybrid laser-arc welding of aerospace and other materials, heat-affected zone cracking in welded nickel superalloys, quality control and non-destructive testing of self-piercing riveted joints in aerospace and other applications, composite-to-metal bonding, and high-temperature brazing.
The microstructure of heat affected zone as shown in Figure 5, while the heat-affected zone can clearly see the martensite appears.