Formation of hybrid structure and enhancement of ductility in beta titanium alloys using elemental segregation
| Project/Area Number |
23560851
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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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 |
EMURA Satoshi 独立行政法人物質・材料研究機構, 元素戦略材料センター, 主任研究員 (00354184)
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| Co-Investigator(Renkei-kenkyūsha) |
TSUCHIYA Koichi 物質・材料研究機構, 元素戦略材料センター, センター長 (50236907)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | ベータ型チタン合金 / 偏析 / ヘテロ構造 / 強度延性バランス / オメガ相 |
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| Research Abstract |
This study aimed at improving the mechanical properties of beta type Ti-Mo alloys using swirly segregation of Mo (VGS structure) and investing the property improvement mechanism. Applying local hardness distribution corresponding to the VGS structure through appropriate heat treatment restricted the local deformation (necking) during room temperature tensile testing and enhanced the total elongation values. Giving the VGS structure also improved the room temperature total elongation values in Fe added Ti-10Mo-Fe alloys. Changing the initial ingot size before forging and rolling affected the morphology of VGS structure and room temperature tensile properties.
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Report
(4 results)
Research Products
(10 results)
