Effects of neutron-irradiation on MgAl2O4 and Al203

D. S. Tucker; T. Zocco; C. D. Kise; J. C. Kennedy

doi:10.1016/S0022-3115(86)80073-3

Effects of neutron-irradiation on MgAl₂O₄ and Al₂0₃

D. S. Tucker
, T. Zocco
, C. D. Kise
, J. C. Kennedy

Energy & Environmental Science & Technology

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

Specimens of MgAl₂O₄ and Al₂0₃ were irradiated to a neutron fluence of approximately 2×10²⁶ n/m², E > 0.1 MeV at 660 K. Tensile strength was seen to decrease by 25.6% for Al₂O₃ and to increase by 24.4% for MgAl₂O₄. Density measurements revealed that Al₂O₃ swelled by 3.22% while MgAl₂O₄ densified slightly (0.316%). Both exhibited mixed failure modes in both control and irradiated samples with a shift from intergranular to transgranular for MgAl₂O₄ and vice-versa for Al₂O₃ upon irradiation. The MgAl₂O₄ damage microstructure consisted of interstitial dislocation loops and denuded grain boundaries. The microstructure of irradiated Al₂O₃ revealed fine areas of damage assumed to be interstitial dislocation loops and voids. Strength and structural changes are correlated with the results and compared with previously obtained results.

Original language	English
Pages (from-to)	401-404
Number of pages	4
Journal	Journal of Nuclear Materials
Volume	141-143
Issue number	PART 1
DOIs	https://doi.org/10.1016/S0022-3115(86)80073-3
State	Published - 1986

Access to Document

10.1016/S0022-3115(86)80073-3

Cite this

@article{f3947f72536541898956992037126f14,

title = "Effects of neutron-irradiation on MgAl2O4 and Al203",

abstract = "Specimens of MgAl2O4 and Al203 were irradiated to a neutron fluence of approximately 2×1026 n/m2, E > 0.1 MeV at 660 K. Tensile strength was seen to decrease by 25.6\% for Al2O3 and to increase by 24.4\% for MgAl2O4. Density measurements revealed that Al2O3 swelled by 3.22\% while MgAl2O4 densified slightly (0.316\%). Both exhibited mixed failure modes in both control and irradiated samples with a shift from intergranular to transgranular for MgAl2O4 and vice-versa for Al2O3 upon irradiation. The MgAl2O4 damage microstructure consisted of interstitial dislocation loops and denuded grain boundaries. The microstructure of irradiated Al2O3 revealed fine areas of damage assumed to be interstitial dislocation loops and voids. Strength and structural changes are correlated with the results and compared with previously obtained results.",

author = "Tucker, \{D. S.\} and T. Zocco and Kise, \{C. D.\} and Kennedy, \{J. C.\}",

year = "1986",

doi = "10.1016/S0022-3115(86)80073-3",

language = "English",

volume = "141-143",

pages = "401--404",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier B.V.",

number = "PART 1",

}

TY - JOUR

T1 - Effects of neutron-irradiation on MgAl2O4 and Al203

AU - Tucker, D. S.

AU - Zocco, T.

AU - Kise, C. D.

AU - Kennedy, J. C.

PY - 1986

Y1 - 1986

N2 - Specimens of MgAl2O4 and Al203 were irradiated to a neutron fluence of approximately 2×1026 n/m2, E > 0.1 MeV at 660 K. Tensile strength was seen to decrease by 25.6% for Al2O3 and to increase by 24.4% for MgAl2O4. Density measurements revealed that Al2O3 swelled by 3.22% while MgAl2O4 densified slightly (0.316%). Both exhibited mixed failure modes in both control and irradiated samples with a shift from intergranular to transgranular for MgAl2O4 and vice-versa for Al2O3 upon irradiation. The MgAl2O4 damage microstructure consisted of interstitial dislocation loops and denuded grain boundaries. The microstructure of irradiated Al2O3 revealed fine areas of damage assumed to be interstitial dislocation loops and voids. Strength and structural changes are correlated with the results and compared with previously obtained results.

AB - Specimens of MgAl2O4 and Al203 were irradiated to a neutron fluence of approximately 2×1026 n/m2, E > 0.1 MeV at 660 K. Tensile strength was seen to decrease by 25.6% for Al2O3 and to increase by 24.4% for MgAl2O4. Density measurements revealed that Al2O3 swelled by 3.22% while MgAl2O4 densified slightly (0.316%). Both exhibited mixed failure modes in both control and irradiated samples with a shift from intergranular to transgranular for MgAl2O4 and vice-versa for Al2O3 upon irradiation. The MgAl2O4 damage microstructure consisted of interstitial dislocation loops and denuded grain boundaries. The microstructure of irradiated Al2O3 revealed fine areas of damage assumed to be interstitial dislocation loops and voids. Strength and structural changes are correlated with the results and compared with previously obtained results.

UR - https://www.scopus.com/pages/publications/0022888361

U2 - 10.1016/S0022-3115(86)80073-3

DO - 10.1016/S0022-3115(86)80073-3

M3 - Article

AN - SCOPUS:0022888361

SN - 0022-3115

VL - 141-143

SP - 401

EP - 404

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - PART 1

ER -

Effects of neutron-irradiation on MgAl₂O₄ and Al₂0₃

Abstract

Access to Document

Other files and links

Fingerprint

Cite this