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In-situ Joining of Nickel Monoaluminide to Iron by Reactive Sintering
| Title: | In-situ Joining of Nickel Monoaluminide to Iron by Reactive Sintering |
| Authors: | Matsuura, Kiyotaka Browse this author →KAKEN DB | | Ohsasa, Kenichi Browse this author | | Sueoka, Noritoshi Browse this author | | Kudoh, Masayuki Browse this author |
| Keywords: | powder metallurgy | | reactive sintering | | combustion synthesis | | intermetallic compound | | nickel monoaluminide | | joining | | mechanical property |
| Issue Date: | 15-Mar-1998 |
| Publisher: | Iron and Steel Institute of Japan |
| Journal Title: | ISIJ International |
| Volume: | 38 |
| Issue: | 3 |
| Start Page: | 310 |
| End Page: | 315 |
| Publisher DOI: | 10.2355/isijinternational.38.310 |
| Abstract: | A cylindrical block of nickel monoaluminide, NiAl, is produced from a mixture of nickel and aluminum powders by sintering a powder compact under a pseudo-isostatic pressure, and is simultaneously joined to an iron block with the same shape. When the joining couple of the powder compact and the iron block is heated to approximately 900 K, a violent exothermic synthesis reaction, Ni+Al→NiAl, suddenly starts, and the temperature of the compact quickly rises owing to the heat of reaction and exceeds the melting point of NiAl, 1911 K. Because the molten NiAl wets the contacting surface of the iron block, an iron-rich NiAl-base alloy and an iron-base ternary solid solution are produced on each side of the joining interface. No cracks or cavities are formed in the NiAl even in the vicinity of the joining interface. Hardness continuously changes across the joining interface from approximately 330 in NiAl to approximately 55 in iron. All of five specimens of a four-point bending test fractured in NiAl, the fracture surface being 1 to 2 mm away from the joining interface. |
| Rights: | 著作権は日本鉄鋼協会にある |
| Type: | article |
| URI: | http://hdl.handle.net/2115/75737 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 松浦 清隆
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