Investigation of nanostructure of reactor pressure vessel steel with different degree of embrittlement

V. T. Lebedev, Gy Török, V. I. Didenko, A. N. Lapin, V. A. Petrov, B. Z. Margolin

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Reactor pressure vessel steel has been studied by SANS in momentum transfer range c = 0.01-4nm-1 following a special heat treatment giving rise to a strong embrittlement. The neutron scattering revealed an intense growth of precipitates as a result of treatment: the volume content of large defects ∼ 40 nm was increased by ∼ 50% as well as their total interface area (defect-matrix) by ∼ 80% whereas their size remained still stable. At the same time, a weaker influence of treatment on middle-size defects ∼ 10 nm (concentration increased by ∼ 20%, the size by ∼ 6%) was observed. The relationship between the structural and mechanical properties of material is discussed in terms of ductile-to-brittle transformation.

Original languageEnglish
Pages (from-to)e471-e474
JournalPhysica B: Condensed Matter
Volume350
Issue number1-3 SUPPL. 1
DOIs
Publication statusPublished - Jul 15 2004

Keywords

  • SANS
  • Structure materials defects

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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