The roles of rare earth dispersoids and process route on the low cycle fatigue behavior of a rapidly solidified powder metallurgy titanium alloy

Journal Article · Sun Aug 01 00:00:00 EDT 1993 · Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States)

DOI:https://doi.org/10.1007/BF02657851· OSTI ID:5655835

Gigliotti, M F.X. ^[1]; Woodfield, A P ^[2]

---

1. General Electric Corp. Research and Development, Schenectady, NY (United States)
2. General Electric Aircraft Engines, Evendale, OH (United States)

Low cycle fatigue tests were conducted at 482C (900F) on forgings and extrusions of a rapidly solidified powder metallurgy titanium base alloy with and without rare earth additions. The variables studied were process temperature and heat treatment. Rare earth dispersions reduced fatigue life, and fracture surfaces indicated internal fatigue crack initiation at rare earth particles.

• OSTI ID: 5655835
• Journal Information: Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States), Vol. 24:8; ISSN 0360-2133
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
TITANIUM BASE ALLOYS
FATIGUE
CRACK PROPAGATION
EXTRUSION
FORGING
FRACTURE PROPERTIES
HEAT TREATMENTS
POWDER METALLURGY
RARE EARTH ADDITIONS
TEMPERATURE RANGE 0400-1000 K
ALLOYS
FABRICATION
MATERIALS WORKING
MECHANICAL PROPERTIES
METALLURGY
RARE EARTH ALLOYS
TEMPERATURE RANGE
TITANIUM ALLOYS
360103* - Metals & Alloys- Mechanical Properties