Three-dimensional atom probe observation of nanoscale titanium-oxygen clustering in an oxide-dispersion-strengthened Fe-12Cr-3W-0.4Ti+Y2O3 ferritic alloy

被引：121

作者：

Larson, DJ

Maziasz, PJ

Kim, IS

Miyahara, K

机构：

[1] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[2] Seagate Technol, Bloomington, MN 55435 USA

[3] Nagoya Univ, Dept Mol Design, Nagoya, Aichi, Japan

来源：

SCRIPTA MATERIALIA | 2001年 / 44卷 / 02期

关键词：

mechanical alloying; atom probe; powder processing; steels; phase equilibria;

D O I：

10.1016/S1359-6462(00)00593-5

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Three-dimensional atom probe (3-DAP) analysis of mechanically alloyed oxide dispersion strengthened (MA/ODS) Fe-12Cr-3W-0.4Ti+Y2O3 alloys reveals an extremely fine dispersion of clusters below the sizes detectable in transmission electron microscopy in the final as-processed material. Similar analysis shows no such nanoscale clusters in a MA/ODS Fe-12+Y2O3 alloys which contains coarser dispersions of Y2O3. The 3-DAP analysis clearly shows that the 3-5 nm clusters are significantly enriched in Ti-Y-O relative to the adjacent matrix, suggesting at least a critical role of Ti in their formation.

引用

页码：359 / 364

页数：6

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