Dynamic coercivity of advanced ferritic steel during long-term isothermal ageing

C. S. Kim, Cliff J. Lissenden, I. K. Park, K. S. Ryu

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The object of this study is to characterize the microstructural evolution in advanced ferritic steel for power plant during long-term isothermal ageing by measuring the reversible permeability. Ageing was observed to coarsen the tempered carbide (Cr23C6), generate me Laves (Fe 2W) phase, and reduce the mechanical strength. The dynamic coercivity decreased monotonously during isothermal ageing. The decrease in coercivity physically depends on the domain wall movement, related with the domain wall pinning by nonmagnetic particles and the dislocations. The experimental results show that the dynamic coercivity is very sensitive to the damage accumulations due to isothermal ageing of advanced ferritic steel.

Original languageEnglish (US)
Pages (from-to)2691-2694
Number of pages4
JournalMaterials Transactions
Volume50
Issue number11
DOIs
StatePublished - Nov 1 2009

Fingerprint

Ferritic steel
Coercive force
coercivity
Aging of materials
steels
Domain walls
domain wall
Microstructural evolution
power plants
carbides
Strength of materials
Carbides
Power plants
permeability
damage

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Kim, C. S. ; Lissenden, Cliff J. ; Park, I. K. ; Ryu, K. S. / Dynamic coercivity of advanced ferritic steel during long-term isothermal ageing. In: Materials Transactions. 2009 ; Vol. 50, No. 11. pp. 2691-2694.
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Dynamic coercivity of advanced ferritic steel during long-term isothermal ageing. / Kim, C. S.; Lissenden, Cliff J.; Park, I. K.; Ryu, K. S.

In: Materials Transactions, Vol. 50, No. 11, 01.11.2009, p. 2691-2694.

Research output: Contribution to journalArticle

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