Strain hardening and ductility of iron: axisymmetric vs. plane strain elongation. Technical progress report
The strain hardening of iron at high strains in plane strain elongation (strip drawing) is shown to fall increasngly below that of drawn iron wires at true strains above 2. This makes it unnecessary to invoke shear band formation simultaneously as a strengthening mechanism and as a ductility reducing mechanism in the drawn strip. Rather, shear bands may be a weakening mechanism in all contexts. A set of specimens of interstitial-free iron deformed in three of the four main classifications of deformation symmetry (wire, strip, and chips, representing axisymmetric elongation, plane strain elongation, and pure shear) has been prepared in the form of mechanical test specimens and thin foils for high resolution selected area diffraction. A simple technique for rapid discovery of the <110> axis of foils of strongly textured bcc wire has been worked out.
- Research Organization:
- Drexel Univ., Philadelphia, PA (USA). Dept. of Materials Engineering
- DOE Contract Number:
- EY-76-S-02-4072
- OSTI ID:
- 6104111
- Report Number(s):
- COO-4072-2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
IRON
DUCTILITY
ELONGATION
MICROSTRUCTURE
STRAIN HARDENING
TENSILE PROPERTIES
DIAGRAMS
DRAWING
EXPERIMENTAL DATA
SHEAR PROPERTIES
CRYSTAL STRUCTURE
DATA
ELEMENTS
FABRICATION
HARDENING
INFORMATION
MATERIALS WORKING
MECHANICAL PROPERTIES
METALS
NUMERICAL DATA
TRANSITION ELEMENTS
360103* - Metals & Alloys- Mechanical Properties
360102 - Metals & Alloys- Structure & Phase Studies