2010 Fiscal Year Final Research Report
Synthesis of Oxide Dispersion Strengthened Composite Materials
| Project/Area Number |
19360306
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Composite materials/Physical properties
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| Research Institution | Hokkaido University |
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Principal Investigator |
UKAI Shigeharu Hokkaido University, 大学院・工学研究院, 教授 (00421529)
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| Co-Investigator(Kenkyū-buntansha) |
OHNUKI Soumei 北海道大学, 大学院・工学研究院, 教授 (10142697)
OHTSUKA Satoshi 日本原子力研究開発機構, 研究員 (90421528)
KAITO Takeji 日本原子力研究開発機構, 副主任研究員 (30421530)
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| Project Period (FY) |
2007 – 2010
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| Keywords | 複合効果 / 酸化物分散 |
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| Research Abstract |
The 9CrODS ferritic steel is a oxide dispersion strengthened composite materials containing residual ferrite as a hard phase. It was shown that a formation of the residual ferrite is attributed to pinning effect of α/γ interface by oxide particles and that its hardening is also attributed to nano-size oxide particle distribution keeping coherency. Through hot-rolling processing, the high-temperature strength and ductility were adequately improved by inducing ferrite transformation for a part of martensitic phase. Production process of the advanced ODS composite material was newly proposed.
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