2000年9月
Nitrogen-doped TiAl alloys - Part I - Microstructure control
JOURNAL OF MATERIALS SCIENCE
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- 巻
- 35
- 号
- 18
- 開始ページ
- 4527
- 終了ページ
- 4532
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1023/A:1004860419517
- 出版者・発行元
- KLUWER ACADEMIC PUBL
Effects of nitrogen addition on the microstructure control of two-phase TiAl intermetallic compounds were investigated. 1.0 at.% nitrogen addition leads to remarkable grain refinement in the fully lamellar microstructure but had little effect on the duplex microstructure. Only Ti3AlN precipitate was formed in 0.3 at.% nitrogen-doped alloy and both Ti2AlN and Ti3AlN precipitates were formed in 1.0 at.% nitrogen-doped alloy. Since the formation of the gamma phase is retarded by nitrogen addition, long-term heat treatment is needed for the duplex microstructure in the 1.0 at.% nitrogen-doped alloy. Though 0.3 at.% nitrogen-doped alloy had much lower elongation than the mother alloy, 1.0 at.% nitrogen addition had little effect on room temperature elongation and increased room temperature yield strength by two times in the fully lamellar microstructure. (C) 2000 Kluwer Academic Publishers.
- リンク情報
- ID情報
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- DOI : 10.1023/A:1004860419517
- ISSN : 0022-2461
- Web of Science ID : WOS:000088984000006