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Segregation of alpha and beta stabilizers in titanium.
Wood FW; Romans PA
Mater Sci Eng 1972 Sep; 10(3):182-185
Metallic phase stabilization is a matter of thermodynamic balance involving the free energy state of metal. The thermodynamics of a particular system is commonly summarized in an equilibrium phase diagram. Many binary phase diagrams are available and it is sometimes possible to use these as bases for conjecture about more complex systems. Miscible, binary combinations based on titanium tend to be of two types: alpha stabilizing or beta stabilizing. In the ti-6al-4v alloy, al is the alpha stabilizer and it tends to reside selectively in beta-phase parts of the structure. Hence, certain features of structure containing hypernormal concentrations of al or V sometimes are identified as aluminum-stabilized alpha segregation or vanadium-stabilized beta segregation. When unusual amounts of oxygen or nitrogen can be associated with an alpha- stabilized irregularity, it is commonly identified as interstitial- stabilized segregation, but valid questions exist about the role of the gaseous contaminants when their presence in unusual concentrations is neither detected nor suspected.
OP; Journal Article
Issue of Publication
Materials Science and Engineering
Page last reviewed: October 8, 2021
Content source: National Institute for Occupational Safety and Health Education and Information Division