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Segregation of alpha and beta stabilizers in titanium.

Authors
Wood-FW; Romans-PA
Source
Mater Sci Eng 1972 Sep; 10(3):182-185
NIOSHTIC No.
10010449
Abstract
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.
CODEN
MSCEAA
Publication Date
19720901
Document Type
OP; Journal Article
Fiscal Year
1972
NTIS Accession No.
NTIS Price
Identifying No.
OP 137-72
Issue of Publication
3
ISSN
0025-5416
NIOSH Division
ALRC
Source Name
Materials Science and Engineering
State
OR
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