Capability of mechanical alloying and SPS technique to develop nanostructured high Cr, Al alloyed ODS steels

被引：13

作者：

Garcia-Rodriguez, N. ^{[1
]}

Campos, M. ^{[1
]}

Torralba, J. M. ^{[1
,2
]}

Berger, M. H. ^{[3
]}

Bienvenu, Y. ^{[3
]}

机构：

[1] Univ Carlos III Madrid, Madrid 28911, Spain

[2] IMDEA Mat Inst, Madrid 28906, Spain

[3] MINES ParisTech, Ctr Mat, CNRS UMR 7633, F-91003 Evry, France

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2014年 / 30卷 / 13B期

关键词：

Material nanostructured; Oxide dispersion strengthened; Mechanical alloying; Spark plasma sintering; MICROSTRUCTURE; TITANIUM;

D O I：

10.1179/1743284714Y.0000000595

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Oxide dispersion strengthened (ODS) Fe alloys were produced by mechanical alloying (MA) with the aim of developing a nanostructured powder. The milled powders were consolidated by spark plasma sintering (SPS). Two prealloyed high chromium stainless steels (Fe-14Cr-5Al-3W) and (Fe-20Cr-5Al+3W) with additions of Y2O3 and Ti powders are densified to evaluate the influence of the powder composition on mechanical properties. The microstructure was characterised by scanning electron microscope (SEM) and electron backscattering diffraction (EBSD) was used to analyse grain orientation, grain boundary geometries and distribution grain size. Transmission electron microscopy (TEM) and scanning transmission electron microscopy (STEM) equipped with energy dispersive X-ray spectrometer (EDX) were used to observe the nanostructure of ODS alloys and especially to observe and analyse the nanoprecipitates. Vickers microhardness and tensile tests (in situ and ex situ) have been performed on the ODS alloys developed in this work.

引用

页码：1676 / 1684

页数：9

共 22 条

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