Creep-rupture behavior of six candidate Stirling engine superalloys tested in air
The creep-rupture behavior of six candidate Stirling engine iron-base superalloys was determined in air. The alloys included four wrought alloys (A-286, Alloy 800H, N-155, and 19-9DL) and two cast alloys (CRM-6D and XF-818). The specimens were tested to rupture for times up to 3000 h at 650/sup 0/ to 925/sup 0/C. Rupture life (t /SUB r/ ), minimum creep rate (epsilon /SUB m/ ), and time to 1 percent creep strain (t /SUB 1/100/ ) were statistically analyzed as a function of stress and temperature. Estimated stress levels at different temperatures to obtain 3500 h t /SUB r/ and t /SUB 1/100/ lives were determined. These data will be compared with similar data being obtained under 15 MPa hydrogen.
- Research Organization:
- IIT Research Inst., Chicago, IL
- OSTI ID:
- 6358372
- Journal Information:
- J. Eng. Mater. Technol.; (United States), Journal Name: J. Eng. Mater. Technol.; (United States) Vol. 106:1; ISSN JEMTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360103 -- Metals & Alloys-- Mechanical Properties
42 ENGINEERING
425003* -- Engineering-- Power Cycles-- Stirling-- (1980-)
AIR
ALLOYS
CREEP
DESTRUCTIVE TESTING
ELEMENTS
ENGINES
FAILURES
FLUIDS
FRACTURE PROPERTIES
GASES
HEAT ENGINES
HIGH PRESSURE
HIGH TEMPERATURE
HYDROGEN
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS TESTING
MECHANICAL PROPERTIES
NONMETALS
RUPTURES
SERVICE LIFE
STIRLING ENGINES
STRAIN RATE
STRESS ANALYSIS
STRESSES
TEMPERATURE DEPENDENCE
TENSILE PROPERTIES
TESTING
TIME DEPENDENCE
VERY HIGH TEMPERATURE