Deformation analysis of small size bend specimens by FEM calculation to estimate irradiation induced embrittlement of Mo and W

Kazukiyo Ueda, Manabu Satou, Akira Hasegawa, Katsunori Abe

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Irradiation-induced embrittlement of Mo, W and their alloys was studied using a three-point bending test. The specimens were in shape of a small disk, identical to a TEM sample. The shift of ductile-brittle transition was observed. In this paper, the finite element method (FEM) was adopted for the analysis of deformation behavior of specimens in the bend test. Spatial distributions of stress and strain of bend specimen were obtained. The plastic deformation that mainly contributes to deformation of specimen was found to be restricted in a small area. Discussion of the size effect in bending deformation is presented. The small three-point bend method was useful to obtain information on mechanical properties of irradiated materials from the load-deflection curves, but in order to extract precise information, i.e. local stress and strain, FEM calculation concerning irradiation hardening should also be conducted simultaneously.

Original languageEnglish
Pages (from-to)466-470
Number of pages5
JournalJournal of Nuclear Materials
Volume258-263
Issue numberPART 1 A
DOIs
Publication statusPublished - 1998 Oct

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

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