2009 Fiscal Year Final Research Report
Effects of Multiple Addition of Si and Mn on the Migration of α/γ Interphase Boundary
| Project/Area Number |
19560660
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Physical properties of metals
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| Research Institution | Ibaraki University |
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Principal Investigator |
ENOMOTO Masato Ibaraki University, 工学部, 教授 (70241742)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 鉄合金 / オーステナイト / フェライト / 合金元素 / 強磁場 / 成長 |
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| Research Abstract |
The effects of Si and Mn, contained in dual-phase (DP) steel and Transformation-Induced-Plasticity (TRIP) steel, on ferrite transformation and the mechanism through which these elements produce the effects were studied in a high-purity Fe-C-Si-Mn quaternary alloy by deformation of austenite prior to transformation and magnetic heat treatment (the field strength is 8 Tesla). Results were compared with calculation taking into account the co-segregation of Mn and Si caused by the interaction between Mn and Si by means of the solute-drag theory. Diffusion of Mn and Si and segregation (or accumulation) at α/γ phase boundaries both delay the transformation and are likely to produce the characteristic three stages of ferrite growth reported in the literature.
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Research Products
(6 results)
