Constitutive modeling of δ-phase zircaloy hydride based on strain rate dependent nanoindentation and nano-scale impact dataset
Journal Article
·
· International Journal of Plasticity
- Purdue Univ., West Lafayette, IN (United States); Purdue Univ., West Lafayette, IN (United States)
- Purdue Univ., West Lafayette, IN (United States)
In this work, a constitutive model for zircaloy-4 embedded with δ-phase hydride rim/blister structures (δ-phase zircaloy hydride) is presented. Nanoindentation and nano-scale impact experiments were performed on the δ-hydride blisters as a function of temperature in order to obtain strain rate dependent location specific constitutive response. A power law viscoplastic constitutive model was chosen to represent the strain rate dependent behavior. The strength coefficient and the strain hardening exponent in the power law relation were found to decrease with increase in temperature indicating softening behavior at higher temperatures. The strain rate exponent remained constant with increase in temperature indicating that the rate dependent ductility does not change significantly at higher temperatures. A finite element method based model was created to analyze the failure behavior and the ductile to brittle transition in zircaloy hydride. The model predicted that fracture strength of δ-phase zircaloy hydride decreases linearly with increase in temperature.
- Research Organization:
- Purdue Univ., West Lafayette, IN (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Nuclear Energy (NE)
- Grant/Contract Number:
- NE0008558
- OSTI ID:
- 1850508
- Alternate ID(s):
- OSTI ID: 1643973
- Journal Information:
- International Journal of Plasticity, Journal Name: International Journal of Plasticity Journal Issue: C Vol. 133; ISSN 0749-6419
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Failure of hydrided zircaloy-4 under equal-biaxial and plane-strain tensile deformation.
Rate-dependent deformation behavior of Zr-based metallic-glass coatings examined by nanoindentation.
Anisotropic behavior and rupture of hydrided Zircaloy-4 sheets
Journal Article
·
Wed Jun 01 00:00:00 EDT 2005
· J. ASTM Inter.
·
OSTI ID:925286
Rate-dependent deformation behavior of Zr-based metallic-glass coatings examined by nanoindentation.
Journal Article
·
Mon Dec 31 23:00:00 EST 2007
· Metallurgical and Materials Transactions A
·
OSTI ID:932610
Anisotropic behavior and rupture of hydrided Zircaloy-4 sheets
Journal Article
·
Tue Feb 29 23:00:00 EST 2000
· Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science
·
OSTI ID:20023143