Development of TRIP-aided Steels for Diesel Engine Common Rail Enduring Ultra High Pressure
| Project/Area Number |
20360311
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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 | Shinshu University |
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Principal Investigator |
SUGIMOTO Koh-Ichi Shinshu University, 工学部, 教授 (50094272)
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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 |
¥18,590,000 (Direct Cost: ¥14,300,000、Indirect Cost: ¥4,290,000)
Fiscal Year 2010: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2009: ¥8,710,000 (Direct Cost: ¥6,700,000、Indirect Cost: ¥2,010,000)
Fiscal Year 2008: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
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| Keywords | 低合金TRIP鋼 / 熱間鍛造 / 化学組成 / 強靭性 / 残留オーステナイト / 引張特性 / 炭素濃化処理 / オーステンパー / 強靱性 |
|---|
| Research Abstract |
For application to diesel engine common rail enduring ultra high-pressure of 3000 bar, 0.2-0.4%C-1.5%Si-1.5%Mn-0.05%Nb-Cr-Mo-Ni-B TRIP-aided bainitic ferrite steels (TBF steels) and TRIP-aided martensitic steels (TM steels) were developed. In addition, the followings were proposed to achieve high combination of strength and toughness and high notch-fatigue strength.
(1) optimum chemical composition for the TBF and TM steels.
(2) ultra-fine graining by hot-forging and consequent austempering or isothermal transformationholding
(3) optimum ratio (BF/M) of bainitic ferrite and martensite and carbon-enrichment mechanism
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Report
(4 results)
Research Products
(60 results)
