Consolidation of Ti(C, N) Dispersed Nanocrystalline Cu Powders Prepared by MA and Their Mechanical Properties.
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- Shen Baolong
- Graduate School, Himeji Institute of Technology
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- Yamasaki Tohru
- Dept. of Materials Science, Faculty of Engineering, Himeji Institute of Technology
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- Katsube Masahiro
- Graduate School, Himeji Institute of Technology
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- Ogino Yoshikiyo
- Dept. of Materials Science, Faculty of Engineering, Himeji Institute of Technology
Bibliographic Information
- Other Title
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- MA法により作製したTi(C,N)分散型ナノ結晶Cu粉末の固化成形および機械的性質
- MAホウ ニ ヨリ サクセイシタ Ti C N ブンサンガタ ナノ ケッショウ
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Abstract
Cu-15.6vol. % Ti(C, N) and Cu-3.1vol. % Ti(C, N) nanocrystalline powders were prepared by ball-milling Cu-l0at. % Ti and Cu-2at. % Ti powder mixtures containing small amounts of stearic acid in nitrogen gas for 200 h. During milling of the Cu-Ti powder mixtures, fcc-Cu phase was refined progressively to average grain sizes of about 20nm in diameter and formation of Ti(C, N) phase was detected by using X-ray diffraction, TEM and ESCA analysis. The milled powders were consolidated by using a HIP process under a pressure of 203 MPa at 1073 K for 2 h. By HIP-consolidating these MA powders, dence nanocrystalline materials of 98.1 and 98.3 % of theoretical bulk densities with average grain sizes of 55nm and 67nm were obtained for Cu-1 5.6vol. % Ti(C, N) and Cu-3.1 vol. % Ti(C, N) materials, respectively. After HIP-processing, the Cu-3. lvol. % Ti(C, N) materials were hot-rolled and subsequently annealed at several temperatures. The density of this material was increased to about 99.7 % by hot-rolling at 873 K, and the nanocrystalline structure having grain sizes between 50 and 100nm with the finely dispersed Ti(C, N). particals and some amounts of graphite particals was observed by HR-TEM. Such a nanocrystalline structure was stable up to the annealing temperature of 1273 K for 5 h.
Journal
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- Journal of the Japan Society of Powder and Powder Metallurgy
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Journal of the Japan Society of Powder and Powder Metallurgy 45 (4), 379-384, 1998
Japan Society of Powder and Powder Metallurgy
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Details 詳細情報について
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- CRID
- 1390001206308850176
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- NII Article ID
- 10002015532
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- NII Book ID
- AN00222724
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- COI
- 1:CAS:528:DyaK1cXjt1aju7k%3D
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- ISSN
- 18809014
- 05328799
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- NDL BIB ID
- 4459424
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed