The layer below the recast layer. This layer has been d subjected to elevated temperatures that have altered the properties of the material.
The portion of the base metal whose mechanical properties or microstructure have been altered by the heat of welding, brazing, soldering, or thermal cutting.
That portion of the base metal in welding, brazing or flame cutting whose microstructure and physical properties have been altered by the heat.
The portion of the base metal which has not been melted, but whose mechanical properties have been altered by the heat of welding or cutting.
The part of a metal that is not melted during cutting, brazing, or welding, but whose microstructure and physical properties are altered by these processes.
metal condition that occurs when the microstructure and/ or mechanical properties of a localized area(s) of a metal product has been effected by previous elevated temperature processing.
The heat-affected zone (HAZ) is the area of base material, either a metal or a thermoplastic, which has had its microstructure and properties altered by welding or heat intensive cutting operations. The heat from the welding process and subsequent re-cooling causes this change in the area surrounding the weld. The extent and magnitude of property change depends primarily on the base material, the weld filler metal, and the amount and concentration of heat input by the welding process.
