STP1270: Irradiation Effects on Base Metal and Welds of 9Cr-1Mo (EM10) Martensitic Steel

    Alamo, A
    Commissariat à l'Energie Atomique, CEREM/DECM/SRMA, Gif-sur-Yvette,

    Séran, JL
    Commissariat à l'Energie Atomique, CEREM/DECM/SRMA, Gif-sur-Yvette,

    Rabouille, O
    Commissariat à l'Energie Atomique, DRN/DMT/SETIC, Gif-sur-Yvette,

    Brachet, JC
    Commissariat à l'Energie Atomique, CEREM/DECM/SRMA, Gif-sur-Yvette,

    Maillard, A
    Commissariat à l'Energie Atomique, CEREM/DECM/SRMA, Gif-sur-Yvette,

    Touron, H
    Commissariat à l'Energie Atomique, CEREM/DECM/SRMA, Gif-sur-Yvette,

    Royer, J
    Commissariat à l'Energie Atomique, DRN/DMT/SETIC, Gif-sur-Yvette,

    Pages: 14    Published: Jan 1996


    Abstract

    The effects of fast neutron irradiation on the mechanical behaviour of base metal and welds of 9Cr-1Mo (EM10) martensitic steel have been studied. Two types of weldments have been produced by TIG and electron beam techniques. Half of samples have been post-weld heat treated to produce a stress-relieved structure. The irradiation has been conducted in the Phenix reactor to doses of 63 – 65 dpa in the temperature range 450 – 459 °C. The characterization of the welds, before and after irradiation, includes metallographic observations, hardness measurements, tensile and Charpy tests. It is shown that the mechanical properties of the welds after irradiation are in general similar to the characteristics obtained on the base metal, which is little affected by neutron irradiation.

    Keywords:

    9Cr-1Mo martensitic steel, TIG welds, EB welds, tensile tests, Charpy tests, hardness, mechanical behaviour after irradiation


    Paper ID: STP16507S

    Committee/Subcommittee: E10.07

    DOI: 10.1520/STP16507S


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