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Tensile testing of MANET II in flowing Pb–Bi alloy at elevated temperature

H Glasbrenner, D Viol2002年Fusion Engineering and DesignIF 1.7出版社

AbstractExperiments were carried out to study the influence of lead bismuth eutectic (LBE) on the tensile properties of the martensitic CrNiMoVNb steel named MANET II (Martensit for Next European Torus) considered as structural material for the first wall and blanket in fusion reactor conceptual design. In order to investigate a possible liquid metal embrittlement (LME) effect, tensile tests in flowing Pb–Bi at various temperatures (between 180 and 300 °C) were carried out. For comparison of the tensile test results achieved in Pb–Bi, tests were also carried out in the same facility but in an Ar atmosphere at the same temperature. After the tests, the fracture faces of the specimens were examined by SEM to analyse the fracture type (brittle or ductile). Additionally the ruptured specimens were longitudinally sectioned and analysed by metallurgical and SEM examinations.

日本語訳

実験は、核融合炉概念設計における第一壁およびブランケットの構造材料として検討されているマルテンサイト系CrNiMoV鋼「MANET II」(Martensit for Next European Torus)の引張特性に及ぼす鉛ビスマス共晶合金(LBE)の影響を調べるために実施された。液体金属脆化(LME)の可能性を調査するため、180℃から300℃の種々の温度で、流動するPb–Bi中における引張試験を行った。Pb–Bi中で得られた引張試験結果との比較のため、同じ試験設備を用いて、同じ温度範囲でアルゴン雰囲気中においても試験を実施した。試験後、破壊形態(脆性か延性か)を解析するために、試験片の破面をSEMにより観察した。さらに、破断した試験片を長手方向に切断し、金属組織学的観察およびSEM観察による解析を行った。

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