FBR構造材料の物性値測定 (その1)各種圧延鋼板の物性値測定

Measurements of physical properties of FBR (Fast Breeder Reactor) structural materials; Part 1 Measurements of physical properties of the rolled steels

木村 英隆*

not registered

FBR(高速増殖炉)原子炉容器や蒸気発生器、配管等に用いられる構造材料の各種物性値は、FBR設計の際に必要となる。そこで、本報告では次期FBR構造材料として候補に挙げられている以下の6鋼種;SUS304,SUS316(従来型),FBR構造用SUS316,SUS321,2・1/4Cr-1Mo鋼,Mod.9Cr-1Mo鋼(ASTM A387-91)の受入ままの実機圧延鋼材(ミルヒート材)のそれぞれ6種の物性値;比重,比熱,熱伝導率,熱膨張率,ヤング率,ポアソン比を測定した結果をまとめた。なお、2・1/4Cr-1Mo鋼とMod.9Cr-1Mo鋼では、溶接後に行われるSR処理(残留応力除去のための熱処理)を施した試料も用意して各種物性値を測定し、結果を合わせてまとめた。今後は、本報告と同鋼種の鍛造材,鋼管や溶接金属についても同様に各種物性値を測定し、物性値の設計基準値策定に資する予定である。[注意]本報告は圧延鋼材のみの物性値測定結果をまとめたものであって、設計基準値ではない。

It is needed for FBR design to know physical properties of the structural materials that will be used for FBR-reactor vessels, -steam generators, and -pipes. In this report, six types of steels that are noted as the structural materials for next steps of FBR are taken up. The six types of steels are as follows ; [SUS 304] [SUS 316 (conventional)] [FBR grade SUS316] [SUS321] [2.25Cr-1Mo steel] [Mod.9Cr-1Mo steel (ASTM A387-91).] Physical properties of the steels are measured on rolled plates made by mills. The measured physical properties are as follows ; [Specific gravity] [Specific heat] [Thermal conductivity] [Thermal expansion] [Young's modulus] [Poisson's ratio.] And also the same kinds of physical properties of S.R. (Stess Relieving) heat treated 2.25Cr-1Mo and Mod.9Cr-1Mo steel plates are measured. Measurement of the physical properties of forgings, pipes, and weld metals of selected types of steels of them will be also carried out in 1990 and all summarized data that will contain the results of this report will be used to determin the criteria design values of the physical properties for the next steps of FBR. (Caution) This report only shows the measurement results of the physical properties of the rolled steel plates but doesn't give the design standards of the physical properties for the next steps of FBR.