2009 Fiscal Year Final Research Report
Precipitation induced recrystallization -Clarification of new recrystallization phenomena and its application to texture control
| Project/Area Number |
19360310
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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 | Tohoku University |
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Principal Investigator |
FURUHARA Tadashi Tohoku University, 金属材料研究所, 教授 (50221560)
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| Co-Investigator(Kenkyū-buntansha) |
MIAYMOTO Goro 東北大学, 金属材料研究所, 助教 (60451621)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 表面処理 / 析出物 / EBSD / 窒化物 / 鉄鋼材料 |
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| Research Abstract |
The effects of initial α grain boundary and lath martensite structure on precipitation induced recrystallization(PIR) have been investigated. The growth of recrystallized grains is inhibited at the boundary misoriented larger than 5 degrees, resulting in the formation of new ferrite grain at these boundaries. The PIR was found to appear in the austenitic high-Cr alloy in which austenite is stabilized by the Ni addition. This implies that the PIR can takes place generally regardless of crystal structure of the matrix when the volume fraction of precipitate is higher.
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