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Vol.42, No.2, 109 ~ 117, 2004
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| Title |
| Effect of Microstructure on the High Temperature Tensile Properties of Fe-17% Cr Nano-Sized Oxide Dispersion Strengthened Ferritic Alloy |
| 김익수 Kim Ig Su , 이용복 Lee Yong Bog , 장진성 Jang Jin Seong , 김창룡 Kim Chang Lyong , Y. Watanabe , K. Miyahara |
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| Abstract |
| In the past few years, oxide dispersion strengthened(ODS) alloys produced by mechanical alloying(MA) techniques have become increasingly interesting for structure applications in nuclear fission and fusion power plant. The mechanical properties of ferritic 17% Cr ODS alloys with and without the addition of Ti and Mp and 17％ Cr ODS were investigated and comparison with those MA-956 alloys in the temperature range of 973K to 1573K. Nano-sized oxide dispersoids in the 17Cr-3Mo-1Ti-0.25Y_(2)O_3) alloys suppressed the grain growth during annealing at high temperature and resulted in a remarkable improvement of the high temperature strength. The oxides containing Ti was the finest and showed the most uniform dispersion. |
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| Key Words |
| ODS, Ferritic alloys, Mechanical alloying, Nano-sized oxides, Microstructure, Tensile properties, MA- 956, Heat-resistant steel |
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