| Project/Area Number |
23360310
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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 | Kyushu University |
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Principal Investigator |
TAKAKI Setsuo 九州大学, 工学(系)研究科(研究院), 教授 (90150490)
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| Co-Investigator(Kenkyū-buntansha) |
TSUCHIYAMA Toshihiro 九州大学, 工学研究院, 准教授 (40315106)
中田 伸生 九州大学, 工学(系)研究科(研究院), 助教 (50380580)
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| Co-Investigator(Renkei-kenkyūsha) |
NAKADA Nobuo 九州大学, 工学研究院, 助教 (50380580)
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| Project Period (FY) |
2011-11-18 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 鉄鋼材料 / 結晶粒微細化強化 / 構造・機能材料 / 粒界偏析 |
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| Research Abstract |
In order to create a database for grain refinement strengthening of iron and steel, the following two researches were carried out. (1) the effects of carbon and nitrogen on grain refinement strengthening were investigated and the difference between carbon and nitrogen was discussed in terms of grain boundary segregation. (2) the effect of individual alloy elements on grain refinement strengthening, so-called Hall-Petch coefficient, was evaluated using interstitial free atoms free (IF) steel. As a result, (1) it was confirmed that carbon increases H-P coefficient more effectively than nitrogen due to a high amount of grain boundary segregation, but the tendency is able to be controlled by heat treatment. (2) the change in H-P coefficient depending on Cr, P and Ni could be evaluated individually.
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