Alloy Phase Diagrams
This article begins with the one-component, or unary, diagram for magnesium. The diagram shows what phases are present as a function of the temperature and pressure. When two metals are mixed in the liquid state to produce a solution, the resulting alloy is called a binary alloy. The article describes the various types of solid solutions such as interstitial solid solutions and substitutional solid solutions. Free energy is important because it determines whether or not a phase transformation is thermodynamically possible. The article discusses the thermodynamics of phase transformations and free energy, as well as kinetics of phase transformations. It concludes with a description of solid-state phase transformations that occur when one or more parent phases, usually on cooling, produces a phase or phases.
Solid Solutions and Phase Transformations, Alloy Phase Diagrams, Vol 3, ASM Handbook, Edited By H. Okamoto, M.E. Schlesinger, E.M. Mueller, ASM International, 2016, p 17–25, https://doi.org/10.31399/asm.hb.v03.a0006222
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