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Structural materials joints for ITER in-vessel components

G Le Marois, H Burlet, R Solomon, B Marini, L Briottet1998年Fusion Engineering and DesignIF 1.7出版社

Abstract316LN stainless steel (SS) and Glidcop AL-25 (DS-Cu) are primary candidates as structural materials for international thermonuclear experimental reactor (ITER) in-vessel components. Their joining is currently being studied at CEA/CEREM. This paper summarises recent progress on structural materials joining using a solid hot isostatic pressing (HIP) technique. The properties of the materials used and the effect of HIP cycles on the metallurgical quality of the SS are reported. A new specification for the DS-Cu is proposed. Different materials and surfaces preparation, the use of interlayers and different HIP conditions are presented and analysed in relation to the mechanical properties of the joints. Characterisation of the bi-metallic joints such as SS/DS-Cu is discussed and further developments with various mode loadings are briefly reported. Some preliminary modelling results regarding stress/strain distribution arising from manufacturing and thermal load conditions are presented. A visco-plastic material database is currently being developed for that purpose.

日本語訳

抄録 316LNステンレス鋼(SS)およびGlidcop AL-25(DS-Cu)は、国際熱核融合実験炉(ITER)の真空容器内機器の構造材料としての主要候補である。それらの接合は現在、CEA/CEREMにおいて研究されている。本論文は、固体熱間静水圧加圧(HIP)法による構造材料の接合に関する最近の進歩を要約するものである。使用される材料の特性、およびHIPサイクルがSSの冶金的品質に及ぼす影響について報告する。DS-Cuに関する新たな仕様が提案される。異なる材料および表面処理、中間層の使用、ならびに異なるHIP条件を、接合部の機械的特性との関連で提示し、分析する。SS/DS-Cuなどの二金属接合部の特性評価について考察し、様々なモードの負荷に関するさらなる研究を簡潔に報告する。製造時および熱負荷条件下での応力/ひずみ分布に関する予備的なモデリング結果の一部を提示する。その目的のために、粘塑性材料データベースが現在構築中である。

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ITERIn-vessel components
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