Evaluation of Ti-6Al-4V powder metallurgy plate
Titanium powder metallurgy (PM) articles offer the potential for cost-effective processing combined with mechanical properties at least equivalent to those found in ingot metallurgy (IM) products. The present work focused on a PM approach to producing plate using both prealloyed rotating electrode process (REP) powder and blended elemental (BE) starting stock. The former approach was anticipated to give good mechanical properties, particularly fatigue, while the latter technique offers a low-cost method. The mechanical properties of plates produced by both PM methods are compared with those exhibited by IM plate. The REP plate had mechanical properties equivalent to IM plate. The BE plate showed very attractive fracture mechanics behavior (fatigue crack growth rate and fracture toughness) but fatigue behavior substantially lower than the REP plate or IM plate. The mechanical properties of both types of plates are rationalized based on the microstructural and fractographic features observed and suggestions are made for further advances.
- Research Organization:
- Metal Powder Industries Federation, Princeton, NJ (USA); AFWAL Materials Lab., Wright-Patterson Air Force Base, OH
- OSTI ID:
- 5496832
- Report Number(s):
- CONF-8205171-
- Journal Information:
- Prog. Powder Metall.; (United States), Journal Name: Prog. Powder Metall.; (United States) Vol. 38; ISSN PPWMA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360102 -- Metals & Alloys-- Structure & Phase Studies
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
ALUMINIUM ALLOYS
CRACK PROPAGATION
CRYSTAL STRUCTURE
FABRICATION
HEAT TREATMENTS
MECHANICAL PROPERTIES
METALLURGY
MICROSTRUCTURE
POWDER METALLURGY
TITANIUM ALLOYS
TITANIUM BASE ALLOYS
VANADIUM ALLOYS