Microstructure change and helium release due to tensile loading on austenitic stainless steel implanted with low energy helium ions

T. Kawakami, K. Tokunaga, N. Yoshida

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Microstructure change and helium release due to tensile loading on 304SS specimens implanted with low energy helium ions have been investigated. Specimens are irradiated with 8 keV helium ions at RT, 573 K and 873 K up to the fluence of 3 × 1021 He/m2. Tensile tests are performed at RT on unirradiated and irradiated specimens at a strain rate of 3.33 × 10-3/s. In every irradiation condition, specimens were tested to failure, and were elastically strained, yield point and plastically strained to 10%, 20% and 40% (total strain). After the tensile test, surface modification and microstructure change are observed with a scanning electron microscope (SEM) and a transmission electron microscope (TEM), respectively. It is shown that surface morphology and microstructure of irradiated specimens after the tensile test are drastically different from that of unirradiated specimens. The tensile loading also influences behavior of thermal desorption of helium and trap sites.

Original languageEnglish
Pages (from-to)457-461
Number of pages5
JournalJournal of Nuclear Materials
Volume367-370 A
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - Aug 1 2007

Fingerprint

Helium
helium ions
austenitic stainless steels
Austenitic stainless steel
helium
Ions
microstructure
Microstructure
tensile tests
Electron microscopes
Thermal desorption
energy
electron microscopes
Surface morphology
Surface treatment
Strain rate
Irradiation
yield point
Scanning
strain rate

All Science Journal Classification (ASJC) codes

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

Cite this

Microstructure change and helium release due to tensile loading on austenitic stainless steel implanted with low energy helium ions. / Kawakami, T.; Tokunaga, K.; Yoshida, N.

In: Journal of Nuclear Materials, Vol. 367-370 A, No. SPEC. ISS., 01.08.2007, p. 457-461.

Research output: Contribution to journalArticle

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AB - Microstructure change and helium release due to tensile loading on 304SS specimens implanted with low energy helium ions have been investigated. Specimens are irradiated with 8 keV helium ions at RT, 573 K and 873 K up to the fluence of 3 × 1021 He/m2. Tensile tests are performed at RT on unirradiated and irradiated specimens at a strain rate of 3.33 × 10-3/s. In every irradiation condition, specimens were tested to failure, and were elastically strained, yield point and plastically strained to 10%, 20% and 40% (total strain). After the tensile test, surface modification and microstructure change are observed with a scanning electron microscope (SEM) and a transmission electron microscope (TEM), respectively. It is shown that surface morphology and microstructure of irradiated specimens after the tensile test are drastically different from that of unirradiated specimens. The tensile loading also influences behavior of thermal desorption of helium and trap sites.

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