Intrinsic interface resistance to propagation of plastic deformation – new interface mechanical properties that can be deduced from experiments with small-volume specimens
| Project/Area Number |
24246113
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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 | Kyoto University |
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Principal Investigator |
INUI HARUYUKI 京都大学, 工学(系)研究科(研究院), 教授 (30213135)
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| Co-Investigator(Kenkyū-buntansha) |
KISHIDA Kyosuke 京都大学, 大学院工学研究科, 准教授 (20354178)
OKAMOTO Norihiko 京都大学, 大学院工学研究科, 助教 (60505692)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥47,190,000 (Direct Cost: ¥36,300,000、Indirect Cost: ¥10,890,000)
Fiscal Year 2014: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
Fiscal Year 2013: ¥10,140,000 (Direct Cost: ¥7,800,000、Indirect Cost: ¥2,340,000)
Fiscal Year 2012: ¥28,080,000 (Direct Cost: ¥21,600,000、Indirect Cost: ¥6,480,000)
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| Keywords | 界面変形抵抗 / マイクロピラー / 試験片サイズ依存性 / 双結晶 / 弾性拘束応力 / 応力集中 / 転位源 / 長範囲応力 / 水素 / 試験片サイズ依存症 |
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| Outline of Final Research Achievements |
Intrinsic resistance of individual interface to propagation of plastic deformation has been deduced from micropillar compression tests made as a function of specimen size for micron meter-sized specimens that contain a single interface. Ni-base superalloys containing cuboidal L12 precipitates in the fcc matrix and TiAl/Ti3Al lamellar alloys containing stacked lamellae of these two phases are taken as examples for three- and two-dimensional interfaces. Intrinsic resistance of individual interface to propagation of plastic deformation are estimated to be 860 MPa for a Ni/Ni3Al interphase boundary in Ni-base superalloys, whereas it is estimated to be 120 MPa and 1200 MPa respectively for true-twin and pseudo twin TiAl interfaces in TiAl/Ti3Al lamellar alloys.
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Report
(4 results)
Research Products
(133 results)
