Effect of Combined Stress on Yield and Fracture Behavior of Zircaloy-2

Journal Article · Sun Jan 01 04:00:00 EST 1961 · Journal of Basic Engineering, Transactions of the ASME

DOI:https://doi.org/10.1115/1.3662246· OSTI ID:4821328

Mehan, R. L.

The yielding and fracture characteristics of Zircaloy-2 as a function of stress state were investigated at room temperature through the medium of thin- walled cylindrical specimens under internal pressure and axial tension. Stress states from uniaxial longitudinal tension to uniaxial tangential tension were examined. Two tests at elevated temperature were performed at a single stress ratio. lt was formd that the fracture ductility lessened with increasing biaxiality. A minimum in ductility was found at balanced biaxial tension where the fracture ductility. as expressed by the effective strain, was 29 per cent. The yielding and plastic flow properties were found to be highly anisotropic. Two methods were used to express the plastic flow data: a graphical approach and a theoretical analysis based on a theory proposed by R. Hill, either one of which is suitable to express the flow properties of Zircaloy-2 under various states of combined stress.

• Research Organization: General Electric Co., Schenectady, N.Y.
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-005735
• OSTI ID: 4821328
• Journal Information: Journal of Basic Engineering, Transactions of the ASME, Journal Name: Journal of Basic Engineering, Transactions of the ASME Journal Issue: 4 Vol. 83; ISSN 0021-9223
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANISOTROPY
ANNEALING
CLEANING
DEFORMATION
DUCTILITY
FAILURES
FORGING
GRAIN SIZE
HARDNESS
HIGH TEMPERATURE
HYDROGEN
MATERIALS TESTING
MECHANICAL PROPERTIES
METALLOGRAPHY
METALS, CERAMICS, AND OTHER MATERIALS
MONOCRYSTALS
PRESSURE
RECRYSTALLIZATION
STRESSES
TEMPERATURE
TENSILE PROPERTIES
TUBES
TUNGSTEN
VACUUM
ZIRCALOY