Creation of Y2Ti2O7 nanoprecipitates to strengthen the Fe-14Cr-3Al-2W steels by adding Ti hydride and Y2O3 nanoparticles

被引：20

作者：

Wang, Linbo ^{[1
]}

Bai, Zhonglian ^{[1
]}

Shen, Hailong ^{[1
]}

Wang, Chenxi ^{[1
]}

Liu, Tong ^{[1
]}

机构：

[1] Beihang Univ, Sch Mat Sci & Engn, Key Lab Aerosp Mat & Performance, Minist Educ, Beijing 100191, Peoples R China

来源：

JOURNAL OF NUCLEAR MATERIALS | 2017年 / 488卷

基金：

中国国家自然科学基金;

关键词：

Ti hydride nanoparticles; Oxide dispersion strengthened; Microstructure; Transmission electron microscopy; Mechanical properties; FERRITIC ALLOYS; OXIDE PARTICLES; MECHANICAL-PROPERTIES; ODS STEEL; DISPERSION; TEMPERATURE; TEM; MICROSTRUCTURE; IRRADIATION; STABILITY;

D O I：

10.1016/j.jnucmat.2017.03.015

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In order to prohibit the formation of large Y-Al-O precipitates, Ti hydride nanoparticles (NPs) were prepared and used to replace Ti as raw particles to fabricate the oxide dispersion strengthened (ODS) Fe-14Cr-3Al-2W-0.35Y(2)O(3) steels by mechanical alloying (MA) and hot isostatic pressing (HIP). As the content of Ti hydride increases from 0.1 to 0.5 and 1.0 wt%, the oxide nanoprecipitates in the ODS steels changes from Y3Al5O12 phase to Y2Ti2O7 phase (semicoherent with the matrix), and the particle size is successfully reduced. The tensile strength of the ODS steel increases remarkably with increasing Ti hydride content. The sample with 1.0 wt% Ti hydride exhibits a high strength of 1049 MPa at 25 degrees C and 278 MPa at 700 degrees C. The creation of Y2Ti2O7 nanoprecipitates by adding Ti hydride NPs opens a new way to control the structure and size of the oxide precipitates in the ODS steels. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：319 / 327

页数：9

共 49 条

[1] Preparation of nano-sized ODS alloys by ball-milling using metallic salts
Ahn, Jung-Ho
Kim, Hwi-Jun
Oh, Ik-Hyon
Kim, Yong-Jin
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 483 (1-2) : 247 - 251
[2] On the role of alloy composition and processing parameters in nanocluster formation and dispersion strengthening in nanostuctured ferritic alloys
Alinger, M. J.
Odette, G. R.
Hoelzer, D. T.
[J]. ACTA MATERIALIA, 2009, 57 (02) : 392 - 406
[3] The effects of low dose rate irradiation and thermal aging on reactor structural alloys
Allen, TR
Trybus, CL
Cole, JI
[J]. JOURNAL OF NUCLEAR MATERIALS, 1999, 270 (03) : 290 - 300
[4] [Anonymous], 2001, HIGH CHROMIUM FERRIT
[5] [Anonymous], 1984, MET DAT BOOK, P84
[6] Nanoscale characterization and formation mechanism of nanoclusters in an ODS steel elaborated by reactive-inspired ball-milling and annealing
Brocq, M.
Radiguet, B.
Poissonnet, S.
Cuvilly, F.
Pareige, P.
Legendre, F.
[J]. JOURNAL OF NUCLEAR MATERIALS, 2011, 409 (02) : 80 - 85
[7] Nano-particle precipitation in mechanically alloyed and annealed precursor powders of legacy PM2000 ODS alloy
Dawson, Karl
Haigh, Sarah J.
Tatlock, Gordon J.
Jones, Andy R.
[J]. JOURNAL OF NUCLEAR MATERIALS, 2015, 464 : 200 - 209
[8] Microstructural characterization of Y2O3 ODS-Fe-Cr model alloys
de Castro, V.
Leguey, T.
Munoz, A.
Monge, M. A.
Pareja, R.
Marquis, E. A.
Lozano-Perez, S.
Jenkins, M. L.
[J]. JOURNAL OF NUCLEAR MATERIALS, 2009, 386-88 : 449 - 452
[9] Polymorphic and coherency transition of Y-Al complex oxide particles with extrusion temperature in an Al-alloyed high-Cr oxide dispersion strengthened ferritic steel
Dou, P.
Kimura, A.
Okuda, T.
Inoue, M.
Ukai, S.
Ohnuki, S.
Fujisawa, T.
Abe, F.
[J]. ACTA MATERIALIA, 2011, 59 (03) : 992 - 1002
[10] Corrosion resistance of PM2000 ODS steel in high temperature supercritical carbon dioxide
Firouzdor, V.
Cao, G. P.
Sridharan, K.
Anderson, M.
Allen, T. R.
[J]. MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION, 2015, 66 (02): : 137 - 142

← 1 2 3 4 5 →