On the influence of strain-path changes on fracture

Journal Article · Wed Apr 01 04:00:00 EST 1987 · Metall. Trans., A; (United States)

DOI:https://doi.org/10.1007/BF02649479· OSTI ID:7079612

Kestner, S C; Koss, D A

Abrupt changes in strain path between uniaxial and equibiaxial tension are shown to have a large effect on plane-strain ductility. Data for titanium sheets, both with and without hydrides, show that a significant ductility enhancement occurs at a final strain state of plane-strain tension following multi-stage deformation sequences comprised of uniaxial and equibiaxial tensions. While the dependence of ductile fracture on both accumulated damage and strain hardening suggest that failure strains should be sensitive to a nonproportional strain-path history, the detailed cause(s) of the present effect is not known.

• Research Organization: Dept. of Materials Science and Engineering, The Pennsylvania State Univ., University Park, PA (US)
• OSTI ID: 7079612
• Journal Information: Metall. Trans., A; (United States), Journal Name: Metall. Trans., A; (United States) Vol. 18A:4; ISSN MTTAB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
CRACK PROPAGATION
DEFORMATION
DUCTILITY
ELEMENTS
FAILURE MODE ANALYSIS
FRACTURE MECHANICS
HARDENING
MECHANICAL PROPERTIES
MECHANICS
METALS
SHEETS
STRAIN HARDENING
STRAINS
STRESS ANALYSIS
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
TENSILE PROPERTIES
TITANIUM
TRANSITION ELEMENTS