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

被引：77
作者：
Li, QA
机构：
[1] IRC in Materials, University of Birmingham
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2006年 / 37A卷 / 01期
关键词：
D O I：
10.1007/s11661-006-0155-2
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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 clusterin and coarsening decreases the strengthening effect of Laves phase. The limitation of the modeling approach currently adopted is also discussed.
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页码：89 / 97
页数：9
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