A comparative TEM study of in-reactor and post-irradiation tensile tested copper

Janne Pakarinen; Seppo Tähtinen; B.N. Singh

doi:10.1016/j.jnucmat.2012.10.014

A comparative TEM study of in-reactor and post-irradiation tensile tested copper

Janne Pakarinen^*, Seppo Tähtinen, B.N. Singh

^*Corresponding author for this work

Risø DTU National Laboratory for Sustainable Energy

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

5 Citations (Scopus)

Abstract

The deformation microstructures of oxygen-free high-conductivity (OFHC) copper were examined by transmission electron microscopy (TEM) following in-reactor and post-irradiation slow strain rate tensile tests. The TEM results suggest that the main modes of deformation differ between all examined cases. Plastic deformation appeared predominantly localized in the defect-free cleared channels following post-irradiation testing and hardly any dislocations were seen outside the channels. The microstructures following in-reactor tests were characterized by a small amount of cleared channels and a distinct dislocation density within the matrix. However, the dislocations observed following in-reactor testing did not seem to interact with each other, whereas that was the main mode of deformation in the non-irradiated reference sample. The possible mechanisms of plastic deformation are discussed based on the experimental results

Original language	English
Pages (from-to)	S821-S825
Journal	Journal of Nuclear Materials
Volume	442
Issue number	1-3 suppl.1
DOIs	https://doi.org/10.1016/j.jnucmat.2012.10.014
Publication status	Published - 2013
MoE publication type	A1 Journal article-refereed
Event	Fifteenth International Conference on Fusion Reactor Materials - Charleston, United States Duration: 16 Oct 2011 → 22 Oct 2011

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10.1016/j.jnucmat.2012.10.014

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title = "A comparative TEM study of in-reactor and post-irradiation tensile tested copper",

abstract = "The deformation microstructures of oxygen-free high-conductivity (OFHC) copper were examined by transmission electron microscopy (TEM) following in-reactor and post-irradiation slow strain rate tensile tests. The TEM results suggest that the main modes of deformation differ between all examined cases. Plastic deformation appeared predominantly localized in the defect-free cleared channels following post-irradiation testing and hardly any dislocations were seen outside the channels. The microstructures following in-reactor tests were characterized by a small amount of cleared channels and a distinct dislocation density within the matrix. However, the dislocations observed following in-reactor testing did not seem to interact with each other, whereas that was the main mode of deformation in the non-irradiated reference sample. The possible mechanisms of plastic deformation are discussed based on the experimental results",

author = "Janne Pakarinen and Seppo T{\"a}htinen and B.N. Singh",

year = "2013",

doi = "10.1016/j.jnucmat.2012.10.014",

language = "English",

volume = "442",

pages = "S821--S825",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

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number = "1-3 suppl.1",

note = "Fifteenth International Conference on Fusion Reactor Materials, ICFRM-15 ; Conference date: 16-10-2011 Through 22-10-2011",

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TY - JOUR

T1 - A comparative TEM study of in-reactor and post-irradiation tensile tested copper

AU - Pakarinen, Janne

AU - Tähtinen, Seppo

AU - Singh, B.N.

PY - 2013

Y1 - 2013

N2 - The deformation microstructures of oxygen-free high-conductivity (OFHC) copper were examined by transmission electron microscopy (TEM) following in-reactor and post-irradiation slow strain rate tensile tests. The TEM results suggest that the main modes of deformation differ between all examined cases. Plastic deformation appeared predominantly localized in the defect-free cleared channels following post-irradiation testing and hardly any dislocations were seen outside the channels. The microstructures following in-reactor tests were characterized by a small amount of cleared channels and a distinct dislocation density within the matrix. However, the dislocations observed following in-reactor testing did not seem to interact with each other, whereas that was the main mode of deformation in the non-irradiated reference sample. The possible mechanisms of plastic deformation are discussed based on the experimental results

AB - The deformation microstructures of oxygen-free high-conductivity (OFHC) copper were examined by transmission electron microscopy (TEM) following in-reactor and post-irradiation slow strain rate tensile tests. The TEM results suggest that the main modes of deformation differ between all examined cases. Plastic deformation appeared predominantly localized in the defect-free cleared channels following post-irradiation testing and hardly any dislocations were seen outside the channels. The microstructures following in-reactor tests were characterized by a small amount of cleared channels and a distinct dislocation density within the matrix. However, the dislocations observed following in-reactor testing did not seem to interact with each other, whereas that was the main mode of deformation in the non-irradiated reference sample. The possible mechanisms of plastic deformation are discussed based on the experimental results

U2 - 10.1016/j.jnucmat.2012.10.014

DO - 10.1016/j.jnucmat.2012.10.014

M3 - Article

SN - 0022-3115

VL - 442

SP - S821-S825

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1-3 suppl.1

T2 - Fifteenth International Conference on Fusion Reactor Materials

Y2 - 16 October 2011 through 22 October 2011

ER -

A comparative TEM study of in-reactor and post-irradiation tensile tested copper

Abstract

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