Microstructural Observation and Tensile Isotropy of an Austenitic Ods Steel

Kim, Tae Kyu; Bae, Chang Soo; Kim, Do Hyang; Jang, Jinsung; Kim, Sung Hoon; Lee, Chan Bock; Hahn, Dohee

doi:10.5516/net.2008.40.4.305

Cited by 41 publications

(18 citation statements)

References 11 publications

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“…The yield strength and ultimate tensile strength of the austenitic ODS steels at room temperature ranges from 380 MPa -852 MPa 3,4,9,11 and 650 MPa -1000 MPa, respectively 3,4,7,8,10,11 . At 500 °C, the yield strength of these steels ranges from 230 MPa -440 MPa 3,7,8,10,11 . Similarly, at 700 °C the yield strength ranges from 230 MPa -300 MPa 3,9 .…”

Section: Mechanical Propertiesmentioning

confidence: 99%

“…The MA parameters lie in the range of BPR 5:1 to 10:1, speed 300 RPM -600 RPM, and MA of these alloys is usually carried out up to 100 hours depending on the milling conditions. The reported consolidation parameters are 50 MPa to 100 MPa pressure with sintering temperature in range of 900 °C -1100 °C and holding time of about 5 min -15 min [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] …”

Section: Processing Techniques Of Austenitic Ods Alloysmentioning

confidence: 99%

“…There are different techniques used to characterise the clusters such as Z contrast mode, high angle annual dark field (HAADF), electron energy loss spectroscopy (EELS) and energy dispersive spectroscopy (EDS) 4,11 attachments in transmission electron microscope (TEM) [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] , synchrotron x-Ray diffraction and atom probe tomography (APT) 4,11,15 . The APT, EELS, and EDS are used to analysis the chemical composition of the dispersoids.…”

Section: Microscopy Of Austenitic Odsmentioning

confidence: 99%

“…The evolution of oxide dispersion strengthening in steels has improved both high temperature and irradiation properties. Due to these characteristics of ODS steels, they have been widely studied 2,3 . Austenitic ODS steels are recently developed steels as a candidate for advanced nuclear materials.…”

Section: Introductionmentioning

confidence: 99%

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Austenitic Oxide Dispersion Strengthened Steels : A Review

2016

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Materials play an important role in the fast breeder reactors. Materials used in cladding tube and fuel pins should have better creep and void swelling resistance. To overcome these difficulties, a new class of material known as oxide dispersion strengthened (ODS) steels are used. There are two groups of ODS steels, the ferritic and the austenitic ODS steels based on the matrix. The present paper reviews the current status of research in austenitic ODS steels. The interaction of dislocations with finely dispersed incoherent, hard particles that governs the strength and high temperature properties of ODS materials is briefly reviewed. The synthesis route adopted for these ODS steels, which is mostly through powder metallurgy route is also discussed. The role of various oxides such as Y2O3, ZrO2and TiO2and the clusters formed in these ODS steels on the mechanical properties and void swelling characteristics is also discussed.

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Section: Mechanical Propertiesmentioning

confidence: 99%

Section: Processing Techniques Of Austenitic Ods Alloysmentioning

confidence: 99%

Section: Microscopy Of Austenitic Odsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Austenitic Oxide Dispersion Strengthened Steels : A Review

2016

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“…Enhanced properties of oxide dispersion strengthened steels can be attributed to the homogenous distribution of nano-oxides in the alloy matrix. 6 High density of dislocations in the alloy results in better void formation resistance. 7 There have been reports suggesting that, with higher dislocation densities in austenitic stainless steels better irradiation properties can be achieved.…”

Section: Introductionmentioning

confidence: 99%

Development of nano-oxide dispersed 304L steels by mechanical milling and conventional sintering

Chandrasekhar

Karak

2016

Mat. Res.

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In the present work an attempt has been made to synthesize 304L stainless steels alloy powders with nominal compositions 70.00Fe-19.00Cr-11.00Ni (alloy A), 69.00Fe-19.00Cr-11.00Ni-1.0 Y 2 O 3 (alloy B), and 69.00Fe-19.00Cr-11.00Ni-1.0 TiO 2 (alloy C), (all in wt.%) by mechanical milling and conventional sintering at 1150°C for 1.0 hour in argon atmosphere. Extensive characterization has been done by SEM, TEM, X-ray diffraction analysis, EDS and particle size analysis at different stages of milling. The minimum crystallite size of powder at final stage of milling was found in the range of 20-25 nm. The bulk hardness values of base and Oxide dispersion strengthened alloys are 2.628 GPa, 4.125 GPa (average) respectively. Wear resistance of TiO 2 dispersed alloy C is found to be superior to that of yttria dispersed alloy B and base alloy A. The nanometric oxide (20-25 nm) particles uniformly dispersed in the alloy matrix contribute to superior mechanical properties.

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