2013 Fiscal Year Final Research Report
Synthesis and Evaluation of New Concept Ti Matrix Composites
| Project/Area Number |
23560871
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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 |
Material processing/treatments
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| Research Institution | Osaka Prefecture University |
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Principal Investigator |
TSUDA Hiroshi 大阪府立大学, 工学(系)研究科(研究院), 客員研究員 (80217322)
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| Co-Investigator(Kenkyū-buntansha) |
MATSUI Toshiyuki 大阪府立大学, 21世紀科学研究機構, 教授 (20219372)
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| Project Period (FY) |
2011 – 2013
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| Keywords | TiC粒子 / Ti2C / 板状α-Ti / TEM観察 / 微細組織 / α+β Ti matrix / β-Ti matrix / 析出 |
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| Research Abstract |
alpha+beta and beta-Ti matrix composites reinforced with TiC particles were synthesized by reactive arc-melting method from Ti-Fe-C-N and Ti-Cr-C-N system. It is found that plate-like alpha-Ti precipitates in the TiC particles when nitrogen is more than 3% and Fe is less than 8% in Ti-Fe-C-N system, and N is more than 2% and Cr is less than 11% in Ti-Cr-C-N system, respectively. It is seemed that Ti2C affects alpha-Ti precipitation in both systems. alpha-Ti precipitates more with increasing nitrogen contents. Accordingly, hardness of TiC decreases. However, that of Ti matrix increases with increasing nitrogen content due to solid solution hardening. Based on TEM observation, crystallographic relationship with TiC particles and precipitated alpha-Ti is described as [011] TiC//[1120] Ti, (111)TiC//(0001)Ti.
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