Effect of prior deformation on the elevated temperature fatigue behavior in Nimonic PE16 alloy

Journal Article · Sun May 01 00:00:00 EDT 1994 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(94)90340-9· OSTI ID:5187795

Sundararaman, M ^[1]; Chen, W; Wahi, R P ^[2]

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1. Bhabha Atomic Research Centre, Bombay (India). Metallurgy Div.
2. Hahn-Meitner-Inst., Berlin (Germany)

It is well known that prior deformation (either monotonic or cyclic) affects the subsequent fatigue behavior of some metals and alloys. A study of this history dependence of cyclic deformation behavior is important, because in engineering application, components quite often experience varying loads and temperatures. Results reported so far indicate that the fatigue behavior of materials, with low/intermediate stacking fault energy, depends very much on the prior history of the sample whereas the behavior of the wavy slip mode materials is not so dependent. The authors chose for the present investigation, a nickel base superalloy, Nimonic PE16, strengthened by the precipitation of [gamma][prime] particles (Ni[sub 3]Al,Ti), having spherical morphology, low volume fraction and uniform distribution in the austenite matrix. This paper reports the results obtained on the effect on prior room temperature cyclic deformation on the elevated temperature fatigue behavior of this alloy, corresponding to two initial microstructural conditions. The results are interpreted in the light of the present understanding of the mechanism of fatigue deformation and the results of transmission electron microscopic (TEM) examination of fatigued samples.

• OSTI ID: 5187795
• Journal Information: Scripta Metallurgica et Materialia; (United States), Vol. 30:9; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
NIMONIC PE16
THERMAL FATIGUE
EXPERIMENTAL DATA
MECHANICAL TESTS
MICROSTRUCTURE
SERVICE LIFE
ALLOY-NI43FE33CR16MO3
ALLOYS
ALUMINIUM ALLOYS
BORON ADDITIONS
BORON ALLOYS
CHROMIUM ALLOYS
COBALT ADDITIONS
COBALT ALLOYS
COPPER ADDITIONS
COPPER ALLOYS
CORROSION RESISTANT ALLOYS
DATA
FATIGUE
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INFORMATION
IRON ALLOYS
LIFETIME
MATERIALS
MATERIALS TESTING
MECHANICAL PROPERTIES
MOLYBDE
NUMERICAL DATA
TESTING
360103* - Metals & Alloys- Mechanical Properties