Abstract
The China Low Activation Martensitic (CLAM) steel is being developed in ASIPP (Institute of Plasma Physics, Chinese Academy of Sciences) under wide collaboration with many institutes and universities. A heat of 1.2 tons was fabricated and tested. The tested main compositions are eligible and without segregation. The tensile, Charpy impact and fracture toughness tests showed that its mechanical properties were similar to those of small ingots of CLAM steel. Also, joining techniques such as Electron Beam Welding (EBW), Hot Isostatic Pressing–Diffusion Welding (HIP–DW) and fabrication techniques of rectangular tube with CLAM steel were studied in details. And a 1/3 scaled mockup of Test Blanket Module (TBM) by P91 are being fabricated to explore TBM fabrication technology.
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