A model for the biaxial post-yield behavior of extruded powder aluminum at elevated temperature
- Georgia Inst. of Tech., Atlanta, GA (United States)
- Westinghouse Savannah River Co., Aiken, SC (United States)
A model has been developed which describes the post-yield behavior of extruded powder aluminum tested biaxially in tension and torsion at elevated temperature. Plots of shear stress versus shear strain for the powder aluminum loaded in simple torsion show that the shear stress increases linearly to the yield point, then remains relatively constant in a pure plastic type of behavior. For the tension-torsion tests, there is an initial linear region up to the yield point followed by a fairly linear decrease in shear stress. A similar linear decrease in axial stress with increasing axial strain is observed in uniaxial tension tests. The model for post-yield behavior of extruded powder aluminum gives a quantified description of the macroscopic material behavior in terms of changes in the laminar powder aluminum structure.
- Research Organization:
- Westinghouse Savannah River Co., Aiken, SC (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC09-89SR18035
- OSTI ID:
- 5660579
- Report Number(s):
- WSRC-MS-90-342; CONF-9106244-3; ON: DE92009845
- Resource Relation:
- Conference: 1991 powder metallurgy conference and exhibition, Chicago, IL (United States), 9-12 Jun 1991
- Country of Publication:
- United States
- Language:
- English
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