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Alloying effect of Ni and Cr on irradiated microstructural evolution of type 304 stainless steels.
- Source :
-
Journal of Nuclear Materials . Nov2013, Vol. 443 Issue 1-3, p351-358. 8p. - Publication Year :
- 2013
-
Abstract
- Abstract: Life extension of the existing nuclear power plants imposes significant challenges to core structural materials that suffer increased fluences. This paper presents the microstructural evolution of a type 304 stainless steel and its variants alloyed with extra Ni and Cr under neutron irradiation at ∼320°C for up to 10.2dpa. Similar to the reported data of type 304 variants, a large amount of Frank loops, ultrafine G-phase/M23C6 particles, and limited amount of cavities were observed in the irradiated samples. The irradiation promoted the growth of pre-existing M23C6 at grain boundaries and resulted in some phase transformation to CrC in the alloy with both extra Ni and Cr. A new type of ultrafine precipitates, possibly (Ti,Cr)N, was observed in all the samples, and its amount was increased by the irradiation. Additionally, α-ferrite was observed in the type 304 steel but not in the Ni or Ni+Cr alloyed variants. The effect of Ni and Cr alloying on the microstructural evolution is discussed. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00223115
- Volume :
- 443
- Issue :
- 1-3
- Database :
- Academic Search Index
- Journal :
- Journal of Nuclear Materials
- Publication Type :
- Academic Journal
- Accession number :
- 91974995
- Full Text :
- https://doi.org/10.1016/j.jnucmat.2013.07.054