Manufacturing and characterization of Ni-free N-containing ODS austenitic alloy

被引：7

作者：

Mori, A. ^{[1
,2
]}

Mamiya, H. ^{[1
]}

Ohnuma, M. ^{[3
]}

Ilavsky, J. ^{[4
]}

Ohishi, K. ^{[5
]}

Wozniak, Jaroslaw ^{[2
]}

Olszyna, A. ^{[2
]}

Watanabe, N. ^{[1
]}

Suzuki, J. ^{[5
]}

Kitazawa, H. ^{[1
]}

Lewandowska, M. ^{[2
]}

机构：

[1] NIMS, 1-2-1 Sengen, Tsukuba, Ibaraki 3050047, Japan

[2] WUT, Fac Mat Sci & Engn, Woloska 141, PL-02507 Warsaw, Poland

[3] Hokkaido Univ, Fac Engn, Kita Ku, Kita 13,Nishi 8, Sapporo, Hokkaido 0608628, Japan

[4] Argonne Natl Lab, Adv Photon Source, Xray Sci Div, 9700 S Cass Ave,Bldg 433A002, Argonne, IL 60439 USA

[5] CROSS, Neutron Sci & Technol Ctr, Tokai, Ibaraki 3191106, Japan

来源：

JOURNAL OF NUCLEAR MATERIALS | 2018年 / 501卷

关键词：

ODS austenitic steel; Mechanical alloying; Spark plasma sintering (SPS); Nanoparticle; Small-angle neutron scattering (SANS); Contrast variation analysis (ACV); STAINLESS-STEEL; STRUCTURAL EVOLUTION; DISPERSION; NITROGEN; POWDERS; MICROSTRUCTURE; CONSOLIDATION;

D O I：

10.1016/j.jnucmat.2018.01.025

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ni-free N-containing oxide dispersion strengthened (ODS) austenitic alloys were manufactured by mechanical alloying (MA) followed by spark plasma sintering (SPS). The phase evolutions during milling under a nitrogen atmosphere and after sintering were studied by X-ray diffraction (XRD). Transmission electron microcopy (TEM) and alloy contrast variation analysis (ACV), including small-angle neutron scattering (SANS) and ultra-small-angle X-ray scattering (USAXS), revealed the existence of nanoparticles with a diameter of 3-51 nm for the samples sintered at 950 degrees C. Sintering at 1000 degrees C for 5 and 15 min caused slight growth and a significant coarsening of the nanoparticles, up to 70 nm and 128 nm, respectively. The ACV analysis indicated the existence of two populations of Y2O3, epsilon-martensite and MnO. The dispersive X-ray spectrometry (EDS) confirmed two kinds of nanoparticles, Y2O3 and MnO. The material was characterized by superior micro-hardness, of above 500 HV0.1. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：72 / 81

页数：10

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