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Solution-annealed discs of three Mn-Cr austenitic steels containing different amounts of C and N were uniformly implanted at 310 K with 1000 appm He corresponding to approximately 0.2 dpa. The samples were subsequently aged at temperatures from 923 to 1073 K for various times and, after electropolishing, examined by TEM, EDS and EELS. A study was made of the dislocation loops developing on ageing and of the compositional changes in their neighbourhood. The formation and growth of precipitates and He-filled cavities was also investigated, together with the elemental segregation to the cavity surfaces. It was found that the microstructural evolution in the three materials can take various forms.

Additional information

Authors: RUEDL E, JRC Ispra (IT);VALDRE G, University of Bologna, Department of Physics, GNSM, INFM, Bologna (IT)
Bibliographic Reference: Paper presented: 4th International Conference on Fusion Reactor Materials, Kyoto (JP), Dec. 4-8, 1989
Availability: Available from (1) as Paper EN 35065 ORA
Record Number: 199111244 / Last updated on: 1994-12-02
Original language: en
Available languages: en
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