Evaluation of the interfacial shear strength and residual stress of TiAlN coating on ZIRLO™ fuel cladding using a modified shear-lag model approach

Y. Liu, I. Bhamji, P. J. Withers, Douglas Edward Wolfe, Arthur Thompson Motta, M. Preuss

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

This paper investigates the residual stresses and interfacial shear strength of a TiAlN coating on Zr-Nb-Sn-Fe alloy (ZIRLO™) substrate designed to improve corrosion resistance of fuel cladding used in water-cooled nuclear reactors, both during normal and exceptional conditions, e.g. a loss of coolant event (LOCA). The distribution and maximum value of the interfacial shear strength has been estimated using a modified shear-lag model. The parameters critical to this analysis were determined experimentally. From these input parameters the interfacial shear strength between the TiAlN coating and ZIRLO™ substrate was inferred to be around 120 MPa. It is worth noting that the apparent strength of the coating is high (∼3.4 GPa). However, this is predominantly due to the large compressive residuals stress (3 GPa in compression), which must be overcome for the coating to fail in tension, which happens at a load just 150 MPa in excess of this.

Original languageEnglish (US)
Pages (from-to)718-727
Number of pages10
JournalJournal of Nuclear Materials
Volume466
DOIs
StatePublished - Mar 1 2015

Fingerprint

shear strength
Shear strength
residual stress
Residual stresses
time lag
shear
coatings
Coatings
evaluation
loss of coolant
Water cooled reactors
nuclear reactors
Substrates
Compressive stress
corrosion resistance
Coolants
Corrosion resistance
Compaction
water

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

Cite this

@article{228ff19b76bf4af8a66865461c5dbb01,
title = "Evaluation of the interfacial shear strength and residual stress of TiAlN coating on ZIRLO™ fuel cladding using a modified shear-lag model approach",
abstract = "This paper investigates the residual stresses and interfacial shear strength of a TiAlN coating on Zr-Nb-Sn-Fe alloy (ZIRLO™) substrate designed to improve corrosion resistance of fuel cladding used in water-cooled nuclear reactors, both during normal and exceptional conditions, e.g. a loss of coolant event (LOCA). The distribution and maximum value of the interfacial shear strength has been estimated using a modified shear-lag model. The parameters critical to this analysis were determined experimentally. From these input parameters the interfacial shear strength between the TiAlN coating and ZIRLO™ substrate was inferred to be around 120 MPa. It is worth noting that the apparent strength of the coating is high (∼3.4 GPa). However, this is predominantly due to the large compressive residuals stress (3 GPa in compression), which must be overcome for the coating to fail in tension, which happens at a load just 150 MPa in excess of this.",
author = "Y. Liu and I. Bhamji and Withers, {P. J.} and Wolfe, {Douglas Edward} and Motta, {Arthur Thompson} and M. Preuss",
year = "2015",
month = "3",
day = "1",
doi = "10.1016/j.jnucmat.2015.06.003",
language = "English (US)",
volume = "466",
pages = "718--727",
journal = "Journal of Nuclear Materials",
issn = "0022-3115",
publisher = "Elsevier",

}

TY - JOUR

T1 - Evaluation of the interfacial shear strength and residual stress of TiAlN coating on ZIRLO™ fuel cladding using a modified shear-lag model approach

AU - Liu, Y.

AU - Bhamji, I.

AU - Withers, P. J.

AU - Wolfe, Douglas Edward

AU - Motta, Arthur Thompson

AU - Preuss, M.

PY - 2015/3/1

Y1 - 2015/3/1

N2 - This paper investigates the residual stresses and interfacial shear strength of a TiAlN coating on Zr-Nb-Sn-Fe alloy (ZIRLO™) substrate designed to improve corrosion resistance of fuel cladding used in water-cooled nuclear reactors, both during normal and exceptional conditions, e.g. a loss of coolant event (LOCA). The distribution and maximum value of the interfacial shear strength has been estimated using a modified shear-lag model. The parameters critical to this analysis were determined experimentally. From these input parameters the interfacial shear strength between the TiAlN coating and ZIRLO™ substrate was inferred to be around 120 MPa. It is worth noting that the apparent strength of the coating is high (∼3.4 GPa). However, this is predominantly due to the large compressive residuals stress (3 GPa in compression), which must be overcome for the coating to fail in tension, which happens at a load just 150 MPa in excess of this.

AB - This paper investigates the residual stresses and interfacial shear strength of a TiAlN coating on Zr-Nb-Sn-Fe alloy (ZIRLO™) substrate designed to improve corrosion resistance of fuel cladding used in water-cooled nuclear reactors, both during normal and exceptional conditions, e.g. a loss of coolant event (LOCA). The distribution and maximum value of the interfacial shear strength has been estimated using a modified shear-lag model. The parameters critical to this analysis were determined experimentally. From these input parameters the interfacial shear strength between the TiAlN coating and ZIRLO™ substrate was inferred to be around 120 MPa. It is worth noting that the apparent strength of the coating is high (∼3.4 GPa). However, this is predominantly due to the large compressive residuals stress (3 GPa in compression), which must be overcome for the coating to fail in tension, which happens at a load just 150 MPa in excess of this.

UR - http://www.scopus.com/inward/record.url?scp=84955670698&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84955670698&partnerID=8YFLogxK

U2 - 10.1016/j.jnucmat.2015.06.003

DO - 10.1016/j.jnucmat.2015.06.003

M3 - Article

AN - SCOPUS:84955670698

VL - 466

SP - 718

EP - 727

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

ER -