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  2. Liquidus and solidus - Wikipedia

    en.wikipedia.org/wiki/Liquidus_and_solidus

    Liquidus and solidus are mostly used for impure substances (mixtures) such as glasses, metal alloys, ceramics, rocks, and minerals. Lines of liquidus and solidus appear in the phase diagrams of binary solid solutions , [ 2 ] as well as in eutectic systems away from the invariant point.

  3. Phase diagram - Wikipedia

    en.wikipedia.org/wiki/Phase_diagram

    The solidus is the temperature below which the substance is stable in the solid state. The liquidus is the temperature above which the substance is stable in a liquid state. There may be a gap between the solidus and liquidus; within the gap, the substance consists of a mixture of crystals and liquid (like a "slurry"). [2]

  4. Lever rule - Wikipedia

    en.wikipedia.org/wiki/Lever_rule

    In chemistry, the lever rule is a formula used to determine the mole fraction (x i) or the mass fraction (w i) of each phase of a binary equilibrium phase diagram.It can be used to determine the fraction of liquid and solid phases for a given binary composition and temperature that is between the liquidus and solidus line.

  5. Solid solution - Wikipedia

    en.wikipedia.org/wiki/Solid_solution

    A binary phase diagram displaying solid solutions over the full range of relative concentrations. On a phase diagram a solid solution is represented by an area, often labeled with the structure type, which covers the compositional and temperature/pressure ranges. Where the end members are not isostructural there are likely to be two solid ...

  6. Phase transition - Wikipedia

    en.wikipedia.org/wiki/Phase_transition

    This diagram shows the nomenclature for the different phase transitions. In physics , chemistry , and other related fields like biology, a phase transition (or phase change ) is the physical process of transition between one state of a medium and another.

  7. Cooling curve - Wikipedia

    en.wikipedia.org/wiki/Cooling_curve

    Alloys have a melting point range. It solidifies as shown in the figure above. First, the molten alloy reaches to liquidus temperature and then freezing range starts. At solidus temperature, the molten alloy becomes solid.

  8. Scheil equation - Wikipedia

    en.wikipedia.org/wiki/Scheil_equation

    The fourth condition (straight solidus/liquidus segments) may be relaxed when numerical techniques are used, such as those used in CALPHAD software packages, though these calculations rely on calculated equilibrium phase diagrams. Calculated diagrams may include odd artifacts (i.e. retrograde solubility) that influence Scheil calculations.

  9. Tantalum–tungsten alloys - Wikipedia

    en.wikipedia.org/wiki/Tantalum–tungsten_alloys

    The equilibrium phase diagram of the alloy formed between the two components tantalum and tungsten is a binary diagram, where the two components are totally soluble on each other. In this diagram the melting temperature of the two elements are shown. It can be seen that there are two lines, representing the solidus and liquidus. [3]