2010 Fiscal Year Final Research Report
Life extension of ferritic creep resistant steel by reduced dislocation density
| Project/Area Number |
20360323
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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 |
Structural/Functional materials
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
KIMURA Kazuhiro National Institute for Materials Science, データシートステーション, ステーション長 (30354236)
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| Co-Investigator(Renkei-kenkyūsha) |
TODA Yoshiaki 独立行政法人物質・材料研究機構, 新構造材料センター, 主任研究員 (60343878)
SAWADA Kota 独立行政法人物質・材料研究機構, 材料信頼性センター, 主任研究員 (00354225)
KUSHIMA Hideaki 独立行政法人物質・材料研究機構, データシートステーション, 主席エンジニア (20354235)
SHIBUYA Masachika 独立行政法人物質・材料研究機構, データシートステーション, 特別研究員
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| Project Period (FY) |
2008 – 2010
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| Keywords | 耐熱鋼 / フェライト鋼 / 転位 / クリープ / 長寿命 |
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| Research Abstract |
Existing high strength ferritic creep resistant steels contain large amounts of dislocations, therefore, a potential of strengthening at the elevated temperatures of 700 and 750℃ which is above the upper limit of usable temperature range for existing steels has been investigated on ferritic steels contain reduced dislocation density with ferrite matrix instead of tempered martensite. It has been revealed on ferritic steels that the higher creep strength is obtained by reducing dislocation density than the existing high strength ferritic creep resistant steels at 700 and 750℃, and precipitation behavior of second phase which is a strengthener has been demonstrated.
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Research Products
(8 results)
