What is a Eutectoid Composition in Welding?
A eutectoid composition is a mixture of phases whose composition is determined by the eutectoid point in the solid region of an equilibrium diagram and whose constituents are formed by a eutectoid reaction. In welding, a eutectoid composition can be used to produce a variety of colors in the weld joint.
- By controlling the amount of time the weld is cooled, the colors can be changed from light to dark. The eutectoid composition is also used to produce a variety of textures in the weld joint.
- By controlling the amount of time the weld is cooled, the textures can be changed from smooth to rough.
What is eutectoid?
Eutectoid is a term used to describe the composition of the material at the eutectoid point. The eutectoid point is the temperature at which a solid solution of two different materials transforms into a mixture of two separate phases.
What is the eutectoid composition of plain carbon steel?
The eutectoid composition of plain carbon steel is 0.77% carbon.
What is a eutectoid alloy?
A eutectoid alloy is an alloy that contains the eutectoid composition of a particular element.
What is a eutectoid system?
A eutectoid system is a binary alloy system in which the eutectoid composition of one of the elements is zero.
Eutectoid transformation
The eutectoid transformation is the transformation of a material from one phase to another at the eutectoid point.
Related Links
Pearlite
Eutectoid Composition – an overview | ScienceDirect Topics
Eutectoid Transformation in Steels
What is eutectoid composition? | Physics Forums
Iron-Carbon Phase Diagram
Related Videos
Eutectoid, Hypoeutectoid and Hypereutectoid steels
Iron-carbon (Steel) Phase Diagram w/ Pro-Eutectoid Step
Lecture 17 Microstructures on eutectic and eutectoid phase diagram
Muddiest Point- Phase Diagrams III: Fe-Fe3C Phase Diagram Introduction
What is a Eutectic
-
Eutectoid, Hypoeutectoid and Hypereutectoid steels
-
Iron-carbon (Steel) Phase Diagram w/ Pro-Eutectoid Step
-
Lecture 17 Microstructures on eutectic and eutectoid phase diagram
-
Muddiest Point- Phase Diagrams III: Fe-Fe3C Phase Diagram Introduction
-
What is a Eutectic