Solidification Range
The solidification range is the temperature interval between the point where a metal melts (liquidus) and the point where it fully solidifies (solidus). A wide interval increases the risk of porosity and segregation.
Physical-Chemical Mechanism
The solidification range is the interval between liquidus and solidus, where both liquid and solid phases coexist. A wide interval gives the metal more time to experience uneven cooling.
Metallurgical Relevance & Welding Risks
A wide solidification range increases the risk of porosity and segregation because the metal solidifies unevenly during cooling. This can lead to fine cracks and poor toughness.
Workshop Practice & Instructions
To minimize risks, cooling should be controlled. For metals with a wide solidification range, it is important to ensure uniform cooling, e.g., by using cooling water or gases.