Thermal and Mechanical Effects on the Corrosion Behavior of Ti-6Al-4V.
Rept. for Jan 71-Jan 72,
AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS
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Anodic and cathodic polarization behaviors of Ti-6Al-4V were determined by potentiostatic and galvanostatic techniques in deaerated 1, 5, and 10N sulphuric acid solutions. In the active region metallurgical processing, which included cold rolling and thermal treatment, had no effect on the corrosion behavior. It is suggested that a titanium hydride film exists on the titanium alloy surface. In the passive region plastic deformation resulting from cold rolling increased the passive current density whereas crystallographic texturing had no effect. The introduction of an alpha prime phase, resulting from thermal treatment, produced an additional peak in the passive region. Author
- Properties of Metals and Alloys