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Damage mechanisms in bithermal and thermomechanical fatigue of Haynes 188Post failure fractographic and metallographic studies were conducted on Haynes 188 specimens fatigued under bithermal and thermomechanical loading conditions between 316 and 760 C. Bithermal fatigue specimens examined included those tested under high strain rate in-phase and out-phase, tensile creep in-phase, and compressive creep out-of-phase loading conditions. Specimens tested under in-phase and out-of-phase thermomechanical fatigue were also examined. The nature of failure mode (transgrandular versus intergranular), the topography of the fracture surface, and the roles of oxidation and metallurgical changes were studied for each type of bithermal and thermomechanical test.
Document ID
19920015742
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Kalluri, Sreeramesh
(Sverdrup Technology, Inc., Brook Park OH., United States)
Halford, Gary R.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1992
Subject Category
Structural Mechanics
Report/Patent Number
NAS 1.15:105381
NASA-TM-105381
E-6768
Meeting Information
Meeting: Symposium on Thermo-Mechanical Fatigue Behavior of Materials
Location: San Diego, CA
Country: United States
Start Date: October 16, 1991
Sponsors: American Society for Testing and Materials
Accession Number
92N24985
Funding Number(s)
PROJECT: RTOP 553-13-00
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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