Solidus Line
The solidus curve shows at which temperature a material is completely solidified and no melt remains. It is crucial for the strength and hardness of the material.
Physicochemical Mechanism of Action
The solidus curve marks the point where the last residual melt in a material fully transitions to solid state. This process is temperature-dependent and depends on the material's composition.
Metallurgical Relevance & Welding Risks
The solidus curve influences the hardness and strength of a material after welding. If the material is cooled below the solidus curve, it can lead to a structure that is too hard and prone to cracking. This can impair the mechanical performance and service life of the component.
Workshop Practice & Action Instructions
To treat the material optimally, the cooling after welding should be designed to stay above the solidus curve. This can be achieved through controlled cooling systems or the use of heat exchangers. The exact temperature and time for cooling depend on the specific material and desired properties.