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Interfacial properties of HIP joint between beryllium and reduced activation ferritic/martensitic steel

ベリリウムと低放射化フェライトマルテンサイト鋼の熱間等方圧加圧法による異材継手における接合界面の特性

安堂 正己; 谷川 博康; 荻原 寛之; 榎枝 幹男; 秋場 真人; 廣瀬 貴規

Ando, Masami; Tanigawa, Hiroyasu; Ogiwara, Hiroyuki; Enoeda, Mikio; Akiba, Masato; Hirose, Takanori

ITER-テストブランケットモジュール(TBM)第一壁開発の一環として、熱間当方圧加圧法(HIP)により、Beアーマと低放射化鋼の異材継手を試作した。接合強度評価等の材料特性を評価した結果、クロム箔を挿入材として鋼へのベリリウムの拡散を抑制した継手が優れた特性を有し、ITER-TBMでの使用に耐える見通しを得た。

Dissimilar joint between beryllium and reduced activation ferritic/martensitic steel for ITER test blanket module has been successfully developed with hot isostatic pressing (HIP) method. A chromium insert on the interface effectively suppresses diffusion of beryllium into the steel, and the joint demonstrated good bonding strength. The strength of the joint was as well as a joint for ITER shielding blanket, therefore it is applicable for ITER-TBM application.

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