Biaxial strength of HY 80 steel

Journal Article · Mon Apr 01 00:00:00 EST 1985 · J. Eng. Mater. Technol.; (United States)

DOI:https://doi.org/10.1115/1.3225788· OSTI ID:6218183

Chan, K S; Lindholm, U S; Wise, J

The biaxial deformation behavior of HY 80 steel has been examined by testing thin wall tubes under combined axial tension and internal pressure. The effective stressstrain curves and the hardening response have been found to vary with the stress state. The plastic strain ratio at a given stress ratio deviates from the von Mises value except at the stress states near uniaxial tension, plane strain and equi-biaxial tension. Using Drucker theory, these deviations are eliminated and the resulting yield locus is in good agreement with both the Bishop-Hill theory and the experimental results. Influenced by the tube geometry, the instability strains at the onset of diffuse necking are decreased by an increase in hoop tension. The diffuse necking strains are reasonably predicted by the Swift and the LankfordSaibel/Mellor criteria.

• Research Organization: Department of Materials Sciences, Southwest Research Institute, San Antonio, Texas
• OSTI ID: 6218183
• Journal Information: J. Eng. Mater. Technol.; (United States), Vol. 107:2
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
STEELS
DESTRUCTIVE TESTING
STRESS ANALYSIS
TENSILE PROPERTIES
AXIAL SYMMETRY
CALCULATION METHODS
DEFORMATION
DIFFUSION
HARDENING
PLASTICITY
RESPONSE FUNCTIONS
STRAIN RATE
STRESS INTENSITY FACTORS
TUBES
ALLOYS
FUNCTIONS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS TESTING
MECHANICAL PROPERTIES
SYMMETRY
TESTING
360103* - Metals & Alloys- Mechanical Properties