Strengthening and toughening of metallic materials by size invariant deformation with an ultra large strain gradient and the clarification of its mechanism
| Project/Area Number |
20246103
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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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 | Toyohashi University of Technology |
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Principal Investigator |
UMEMOTO Minoru Toyohashi University of Technology, 大学院・工学研究科, 教授 (90111921)
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| Co-Investigator(Kenkyū-buntansha) |
TODAKA Yoshikazu 豊橋技術科学大学, 大学院・工学研究科・機械工学専攻, 准教授 (50345956)
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| Co-Investigator(Renkei-kenkyūsha) |
THUCHIYA Koichi 独立行政法人物質・材料研究機構, ハイブリッド材料センター, 研究員 (50236907)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥44,460,000 (Direct Cost: ¥34,200,000、Indirect Cost: ¥10,260,000)
Fiscal Year 2010: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2009: ¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2008: ¥21,190,000 (Direct Cost: ¥16,300,000、Indirect Cost: ¥4,890,000)
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| Keywords | 金属 / 巨大ひずみ / 強度 / 延性 / 歪勾配 / 高圧相 / ナノ結晶 / 変態 |
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| Research Abstract |
The present research aimed to make clear the method to produce metallic materials with high strength and good ductility by applying shape invariant deformation with a large strain gradient. In pure Ti and pure Zr, it was made clear that such deformation enhance to retain high strength high pressure phase at ambient condition. It was proposed that the two phase structure with high strength high pressure ω phase and ductile α phase can be a good candidate for the high strength-high ductile materials. In austenitic stainless steels, it was shown that high strength-high ductility can be achieved by grain refinement strengthening and nano-size precipitation strengthening and transformation plasticity.
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Report
(4 results)
Research Products
(182 results)
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[Journal Article] Severe pastic deformation of Zr-Cu-Al metallic glass in As-cast and crystallized conditions, Processing and Fabrication Advanced Materials- XVIII2009
Author(s)
K.Tsuchiya, S.Yamamoto, Y.Yokoyama, H.Kato, Y Todaka, M.Umemoto
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Journal Title
eds : M.Niinomi, M.Morinaga, M.Nakai, N.Bhatnagar, T.S.Srivatsan Vol.4
Pages: 1865-1874
Related Report
Peer Reviewed
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[Journal Article] Formation of ultrafine-grained structure at worn surface in carbon steel by wearing process, Processing and Fabrication Advanced Materials-XVIII2009
Author(s)
K.Koujina, Y Todaka, T.Yakushiji, H.Nagai, Y.Iguchi, M.Umemoto
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Journal Title
eds : M.Niinomi, M.Morinaga, M.Nakai, N.Bhatnagar, T.S.Srivatsan Vol.4
Pages: 1925-1932
Related Report
Peer Reviewed
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[Presentation] HPT加工による極低炭素鋼の組織変化2009
Author(s)
熊谷匡明, Wu Ningning, 戸高義一, 梅本実
Organizer
日本金属学会2009年秋期(第145回) 日本鉄鋼協会2009年秋季講演大会(第158回)
Place of Presentation
京都大学吉田キャンパス
Year and Date
2009-09-17
Related Report
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