Effect of neutron irradiation on mechanical properties of Cu/SS joints after single and multiple HIP cycles

Seppo Tähtinen (Corresponding Author), Bachu Singh, Palle Toft

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Abstract

The present design of the ITER plasma facing components consists of a copper alloy heat sink layer between plasma facing materials and stainless steel structure. The main option for manufacturing these components is hot isostatic pressing (HIP) method and several HIP thermal cycles are foreseen for manufacturing of the complete blanket module. Mechanical characterisation of HIP joints between dissimilar metals is a complicated issue, where information on mechanical properties of base alloys, metallurgy of the HIP joints and mechanical testing methods will be required. The tensile and three point bend tests produced different fracture modes, depending on test temperature, applied HIP thermal cycles and neutron irradiation. The fracture mode was either ductile fracture of copper alloy or joint interface fracture. The mechanical properties of the HIP joint specimens were dominated by strength mismatch of the base alloys which was affected by HIP thermal cycles and neutron irradiation.

Original languageEnglish
Pages (from-to)1238 - 1242
Number of pages5
JournalJournal of Nuclear Materials
Volume283-287
Issue numberPart 2
DOIs
Publication statusPublished - 2000
MoE publication typeA1 Journal article-refereed

Fingerprint

hot isostatic pressing
Hot isostatic pressing
Neutron irradiation
neutron irradiation
mechanical properties
Mechanical properties
cycles
copper alloys
Copper alloys
manufacturing
bend tests
steel structures
Dissimilar metals
Plasmas
metallurgy
irradiation
Ductile fracture
Mechanical testing
blankets
Stainless Steel

Cite this

@article{edc207a3aa0e42b8859c07587524cdda,
title = "Effect of neutron irradiation on mechanical properties of Cu/SS joints after single and multiple HIP cycles",
abstract = "The present design of the ITER plasma facing components consists of a copper alloy heat sink layer between plasma facing materials and stainless steel structure. The main option for manufacturing these components is hot isostatic pressing (HIP) method and several HIP thermal cycles are foreseen for manufacturing of the complete blanket module. Mechanical characterisation of HIP joints between dissimilar metals is a complicated issue, where information on mechanical properties of base alloys, metallurgy of the HIP joints and mechanical testing methods will be required. The tensile and three point bend tests produced different fracture modes, depending on test temperature, applied HIP thermal cycles and neutron irradiation. The fracture mode was either ductile fracture of copper alloy or joint interface fracture. The mechanical properties of the HIP joint specimens were dominated by strength mismatch of the base alloys which was affected by HIP thermal cycles and neutron irradiation.",
author = "Seppo T{\"a}htinen and Bachu Singh and Palle Toft",
note = "Project code: V9SU00208",
year = "2000",
doi = "10.1016/S0022-3115(00)00177-X",
language = "English",
volume = "283-287",
pages = "1238 -- 1242",
journal = "Journal of Nuclear Materials",
issn = "0022-3115",
publisher = "Elsevier",
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}

Effect of neutron irradiation on mechanical properties of Cu/SS joints after single and multiple HIP cycles. / Tähtinen, Seppo (Corresponding Author); Singh, Bachu; Toft, Palle.

In: Journal of Nuclear Materials, Vol. 283-287, No. Part 2, 2000, p. 1238 - 1242.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Effect of neutron irradiation on mechanical properties of Cu/SS joints after single and multiple HIP cycles

AU - Tähtinen, Seppo

AU - Singh, Bachu

AU - Toft, Palle

N1 - Project code: V9SU00208

PY - 2000

Y1 - 2000

N2 - The present design of the ITER plasma facing components consists of a copper alloy heat sink layer between plasma facing materials and stainless steel structure. The main option for manufacturing these components is hot isostatic pressing (HIP) method and several HIP thermal cycles are foreseen for manufacturing of the complete blanket module. Mechanical characterisation of HIP joints between dissimilar metals is a complicated issue, where information on mechanical properties of base alloys, metallurgy of the HIP joints and mechanical testing methods will be required. The tensile and three point bend tests produced different fracture modes, depending on test temperature, applied HIP thermal cycles and neutron irradiation. The fracture mode was either ductile fracture of copper alloy or joint interface fracture. The mechanical properties of the HIP joint specimens were dominated by strength mismatch of the base alloys which was affected by HIP thermal cycles and neutron irradiation.

AB - The present design of the ITER plasma facing components consists of a copper alloy heat sink layer between plasma facing materials and stainless steel structure. The main option for manufacturing these components is hot isostatic pressing (HIP) method and several HIP thermal cycles are foreseen for manufacturing of the complete blanket module. Mechanical characterisation of HIP joints between dissimilar metals is a complicated issue, where information on mechanical properties of base alloys, metallurgy of the HIP joints and mechanical testing methods will be required. The tensile and three point bend tests produced different fracture modes, depending on test temperature, applied HIP thermal cycles and neutron irradiation. The fracture mode was either ductile fracture of copper alloy or joint interface fracture. The mechanical properties of the HIP joint specimens were dominated by strength mismatch of the base alloys which was affected by HIP thermal cycles and neutron irradiation.

U2 - 10.1016/S0022-3115(00)00177-X

DO - 10.1016/S0022-3115(00)00177-X

M3 - Article

VL - 283-287

SP - 1238

EP - 1242

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

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ER -