Constitutive Model for Anisotropic Creep Behaviors of Single-Crystal Ni-Base Superalloys in the Low-Temperature, High-Stress Regime (Postprint)

Abstract

A crystallographic constitutive model is developed to capture orientation-sensitive primary and secondary creep behaviors within approximately 20 deg from the [0 0 1] orientation in single crystal superalloys for the low-temperature and high-stress regime. The crystal plasticity-based constitutive formulations phenomenologically incorporate experimentally observed dislocation micromechanisms.

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Document Details

Document Type
Technical Report
Publication Date
Jan 19, 2012
Accession Number
ADA621000

Entities

People

  • Christopher Woodward
  • Dennis M. Dimiduk
  • Michael D. Uchic
  • Triplicane A. Parthasarathy
  • Yoon Suk Choi

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • C4I
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Crystals
  • Dislocations
  • Energy
  • Geometry
  • Governments
  • Low Temperature
  • Materials
  • Orientation (Direction)
  • Plastic Properties
  • Shear Stresses
  • Simulations
  • Single Crystals
  • Strain Hardening
  • Strain Rate
  • Superalloys

Readers

  • Materials Science and Engineering.
  • Structural Health Monitoring of Composite Structures.