The Effect of Y/Ti Ratio on Oxide Precipitate Evolution in ODS Fe-14 Wt Pct Cr Alloys

被引：8

作者：

Zhong, Sheng-Yi ^{[1
]}

Ribis, Joel ^{[2
]}

Lochet, Nicolas ^{[2
]}

De Carlan, Yann ^{[2
]}

Klosek, Vincent ^{[1
]}

Ji, Vincent ^{[3
]}

Mathon, Marie-Helene ^{[1
]}

机构：

[1] CEA Saclay, DSM IRAMIS LLB, F-91191 Gif Sur Yvette, France

[2] CEA Saclay, DMN SRMA LTMEx, F-91191 Gif Sur Yvette, France

[3] Univ Paris 11, ICMMO LEMHE, F-91405 Orsay, France

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2015年 / 46A卷 / 03期

关键词：

FERRITIC ALLOYS; CREEP-PROPERTIES; STEEL CLADDINGS; PARTICLES; STABILITY; MA957;

D O I：

10.1007/s11661-014-2683-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Fe-14Cr-1W oxide dispersion strengthened ferritic alloys have excellent mechanical properties at high temperatures due to a high density of thermally stable Y-Ti-O nanoclusters, which are rather stable at high temperature. The aim of this work was to study the evolutions of Y-Ti-O precipitation at high temperature as a function of nominal content of Y, Ti, and O. Different Fe-14Cr alloys were characterized by small-angle neutron scattering technique under magnetic field as well as transmission electron microscopy investigations before and after annealing at 1573 K to 1723 K (1300 degrees C to 1450 degrees C). Significant differences are observed depending on the Y/Ti/O ratios. For Ti/Y >1, the coarsening kinetics is low even at 1723 K (1450 degrees C). For Ti/Y <1, very large size particles are observed after annealing at 1573 K (1300 degrees C). We have shown that the oxygen content should be strictly controlled to avoid significant coarsening at 1573 K (1300 degrees C) and above. (C) The Minerals, Metals & Materials Society and ASM International 2014

引用

页码：1413 / 1418

页数：6