Metallurgical and Materials Transactions A

, Volume 37, Issue 1, pp 89–97 | Cite as

Precipitation of Fe2W laves phase and modeling of its direct influence on the strength of a 12Cr-2W steel

  • Qiang Li
Article
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Abstract

Precipitation of Fe2W Laves phase in a 12Cr-2W power plant steel is investigated by using transmission electron microscopy (TEM). Fe2W Laves phase is found to be coherent with the matrix and has a stacking fault structure. The influence of formation of Fe2W Laves phase on the yield strength of the steel is quantitatively evaluated. The modeling result indicates that the strengthening effect from the formation of Laves phase particles is diminished by the loss of solid solution strengthening of alloying elements, and, as a result, the strength of the steel remains similar. The effect of clustering and coarsening of Laves precipitates on the strength of the steel is also studied. It is showed that clustering and coarsening decreases the strengthening effect of Laves phase. The limitation of the modeling approach currently adopted is also discussed.

Keywords

Material Transaction Lave Phase Strengthening Effect Solid Solution Strengthen Transmission Electron Microscopy Examination 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© ASM International & TMS-The Minerals, Metals and Materials Society 2006

Authors and Affiliations

  • Qiang Li
    • 1
  1. 1.the IRC in MaterialsUniversity of BirminghamBirminghamUnited Kingdom

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