کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
296498 511728 2014 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study of candidate materials for new reactor systems using positron annihilation spectroscopy and Barkhausen noise
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
پیش نمایش صفحه اول مقاله
Study of candidate materials for new reactor systems using positron annihilation spectroscopy and Barkhausen noise
چکیده انگلیسی


• Description of perspective ferritic/martensitic, ODS and austenitic steel.
• We compared steels using positron annihilation spectroscopy and Barkhausen noise.
• We studied the materials in their base state and after helium implantation.
• Observation of irradiation hardening of steels.

This paper is aimed on non-destructive analysis of candidate materials for the New Generation of Nuclear Reactors (GEN IV) and fusion technologies. It presents various construction materials as austenitic steel NF709, ferritic/martensitic (FM) steel EUROFER97 and two oxide dispersion strengthened (ODS) steels ODS EUROFER and MA956. Steels are studied in their base state and after simulated irradiation damage using a linear accelerator at the Laboratory of ion beams of the Slovak University of Technology. The kinetic energy of 2+He ions reached 500 keV, achieving irradiation induced damage roughly 10 dpa, which is relative to 0.1 C/cm2. Temperature during implantation of 2+He ions into the samples was about 52–60 °C. Applied non-destructive techniques are positron annihilation lifetime spectroscopy (PALS) and Barkhausen noise (BN). Both methods present results concerning different behavior of studied materials. FM steels strengthened by yttrium oxides after simulated irradiation damage, showed negligible change in intensities of positrons trapped in defects whereas in austenitic steel a significant hardening effect was observed. Barkhausen noise which was used as a supplementary method, proved initial hardness of ODS steels, therefore supporting the results acquired from PALS.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Engineering and Design - Volume 273, 1 July 2014, Pages 376–380
نویسندگان
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