miscibility gaps

A miscibility gap is a range of conditions, such as temperature or composition, where two substances that usually mix well prefer to stay separate instead. In other words, even though they can blend together under certain conditions, there’s a specific range where they tend to separate into distinct phases or layers. This phenomenon is common in alloys and other materials, affecting their properties. Think of it like oil and water—under certain conditions, they don’t blend completely and form separate layers rather than a uniform mixture.