An Experimental Evaluation of the Mechanical Response Characteristics of Rene 95

Item

Title
An Experimental Evaluation of the Mechanical Response Characteristics of Rene 95
Date
1980
Index Abstract
Coming Soon
Photo Quality
Complete
Report Number
AFWAL TR 80-4136
Creator
Stouffer, D. C.
Bernstein, H. L.
Paperni, L.
Corporate Author
University of Cincinnate
Laboratory
Materials Laboratory
Date Issued
1980-10-01
Extent
76
Identifier
ADA094466
Access Rights
Approved for Public Release; Distribution Unlimited
Distribution Classification
1
Contract
F33615-78-C-5199
DoD Project
2307
DoD Task
2307P1
DTIC Record Exists
No
Distribution Change Authority Correspondence
None
Date Modified
Scanned by request 3/30/2007 submitted by Kanchanbagh (Government Agency - International)
Abstract
The mechanical responses of thermomechanically processed cast and wrought Rene 95 at 650C (1200 F) was studied. The experimental program included: tensile and compressive tests at different constant strain rates, creep in tension at and compression at twelve stress levels, strain recovery, stress relaxation, creep response to a sequence of step stress histories and fatigue under load control. The results are important for the understanding of the material response characteristics and for the development of a realistic constitutive model. Most of the tests were done in tension and data was used to evaluate various constitutive assumptions. It was shown that the engineering stress-strain response is relatively insensitive to changes in strain rate at rates above 5%/min. It was also shown that the compressive stress-strain response is about 10% stiffer than the tensile response and the minimum creep rate in compression. The hysteresis loop developed a mean tensile strain. It was found that the logarithm of the minimum creep rate is linear in the true stress and that creep and stress relaxation can be correlated using isochronous creep curves. The minimum creep rate is also independent of step changes in the stress history.
Report Availability
Full text available
Provenance
IIT
Type
report
Format
1 online resource