Texture-induced anisotropy and high-strain rate deformation in metals

Conference · Mon Jan 01 00:00:00 EST 1990

OSTI ID:6625280

Schiferl, S K; Maudlin, P J

We have used crystallographic texture calculations to model anisotropic yielding behavior for polycrystalline materials with strong preferred orientations and strong plastic anisotropy. Fitted yield surfaces were incorporated into an explicit Lagrangian finite-element code. We consider different anisotropic orientations, as well as different yield-surface forms, for Taylor cylinder impacts of hcp metals such as titanium and zirconium. Some deformed shapes are intrinsic to anisotropic response. Also, yield surface curvature, as distinct from strength anisotropy, has a strong influence on plastic flow. 13 refs., 5 figs.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOD; DOE/DP
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6625280
• Report Number(s): LA-UR-90-2679; CONF-9008125-8; ON: DE90016611
• Resource Relation: Conference: Explomet conference, San Diego, CA (USA), 12-17 Aug 1990
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
TITANIUM
DEFORMATION
ZIRCONIUM
ANISOTROPY
CRYSTAL STRUCTURE
SHOCK WAVES
STRAIN HARDENING
STRAIN RATE
ELEMENTS
HARDENING
METALS
TRANSITION ELEMENTS
360103* - Metals & Alloys- Mechanical Properties