Paper Title:
Change of Mechanical Properties of FM Steels after Thermal Aging
  Abstract

The effects of thermal aging on microstructural evolution and mechanical properties are important in the understanding of the in-service behavior of ferritic/martensitic steels in advanced nuclear power system. Ferritic/martensitic steels have been aged at 600oC for times up to 20,000 hrs. The change of mechanical properties has been examined for these aged materials. The strength and hardness was hardly changed after the thermal aging at 600oC for 20,000 hrs in all specimens. The impact absorbed energy decreased with the aging time. But the decrease of the impact absorbed energy was larger at the early stage of aging in tungsten added steels. This is attributed to the formation of Laves phase. Nitrogen which is known to increase the creep rupture strength had no effect on the degradation of the microstructure and mechanical properties during thermal aging.

  Info
Periodical
Solid State Phenomena (Volumes 124-126)
Edited by
Byung Tae Ahn, Hyeongtag Jeon, Bo Young Hur, Kibae Kim and Jong Wan Park
Pages
1413-1416
DOI
10.4028/www.scientific.net/SSP.124-126.1413
Citation
S. H. Kim, C. H. Han, W. S. Ryu, "Change of Mechanical Properties of FM Steels after Thermal Aging", Solid State Phenomena, Vols. 124-126, pp. 1413-1416, 2007
Online since
June 2007
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Price
$32.00
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