The "interstitial" and "substitutional" forms of these materials differ in how their component atoms are arranged in a crystal lattice.
Multicomponent diffusion in these materials can be described with Darken's equations. They're not polymers, but some of these materials exhibit a form of pseudoelasticity where temperature changes cause them to change phases via a hysteresis loop; that property is called "shape memory." During phase changes of these solid-state materials, weight percentages can be determined using the lever rule. The movement of dislocations in these materials is hindered by a form of heat treatment called (*) precipitation hardening, which increases their mechanical strength. The "interstitial" and "substitutional" forms of these materials differ in how their component atoms are arranged in a crystal lattice. For 10 points, identify these materials that are composed of two or more metals such as brass and steel.
Multicomponent diffusion in these materials can be described with Darken's equations.
alloys [or solid solutions; prompt on solutions or crystals]