4-7 November 2019
PSI Auditorium
Europe/Zurich timezone
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Microstructural evolution of Fe-9Cr alloys under 3.5 MeV Fe13+ ion irradiation

5 Nov 2019, 17:30
WHGA/001 (PSI Auditorium)


PSI Auditorium

Forschungstrasse 11 5232 Villigen PSI Switzerland


Mr Tiantian Shi


Abstract: The microstructural evolution of two Fe-9Cr model alloys with different C content after irradiation was investigated by transmission electron microscopy. These two steels were both irradiated with 3.5 MeV Fe13+ ions at 450℃ to a peak damage level of 3 dpas. TEM results indicate that <100> loops and 1/2<111> loops coexist in the two irradiated steels. Furthermore, the loop size of Fe-9Cr alloy with higher C content is about twice that of the Fe-9Cr alloy with lower C content. The difference in the size of the dislocation loops between the two steels may be attributed to the difference in C content. The carbon–vacancy complexes are effective traps for SIA loops and contribute to the growth of the loops, which may cause larger size dislocation loops in Fe-9Cr alloy containing higher C content.

Primary authors

Mr Tiantian Shi Prof. Di Yun

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