Phase transformations in intermetallic phases in zirconium alloys

• Published in: Hyperfine interactions 2017-11, Vol.238 (1), p.1-6, Article 23
• Main Authors: Filippov, V. P., Kirichenko, V. G., Salomasov, V. A., Khasanov, A. M.
• Format: Article
• Language: English
• Subjects: 31 May-3 June 2016; Atomic; Backscattering; Cavtat; Condensed Matter Physics; Croatia; Diffusion; Enhanced diffusion; Hadrons; Heavy Ions; Inclusions; Intermetallic compounds; Intermetallic phases; Internal conversion; Iron; Iron 57; Molecular; Mossbauer spectroscopy; Niobium; Nuclear Physics; Optical and Plasma Physics; Phase transitions; Physics; Physics and Astronomy; Proceedings of the 2nd Mediterranean Conference on the Applications of the Mössbauer Effect (MECAME 2016); Surfaces and Interfaces; Thin Films; Zirconium base alloys
• ISSN: 0304-3843; 1572-9540
• DOI: 10.1007/s10751-016-1377-3

Phase change was analyzed in intermetallic compounds of zirconium alloys (Zr – 1.03 at.% Fe; Zr – 0.51 at.% Fe; Zr – 0.51 at.% Fe – M(M = Nb, Sn). Mössbauer spectroscopy on 57 Fe nuclei in backscattering geometry with the registration of the internal conversion electrons and XRD were used. Four types of iron bearing intermetallic compounds with Nb were detected. A relationship was found between the growth process of intermetallic inclusions and segregation of these phases. The growth kinetics of inclusions possibly is not controlled by bulk diffusion, and a lower value of the iron atom’s activation energy of migration can be attributed to the existence of enhanced diffusion paths and interface boundaries.