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Grain Refinement and Improvement in Mechanical Properties of Nb-Al-Si Intermetallic Alloys
| Title: | Grain Refinement and Improvement in Mechanical Properties of Nb-Al-Si Intermetallic Alloys |
| Authors: | Matsuura, Kiyotaka Browse this author →KAKEN DB | | Kata, Dariusz Boleslaw Browse this author | | Lis, Jerzy Tadeusz Browse this author | | Kudoh, Masayuki Browse this author |
| Keywords: | powder metallurgy | | refractory metal | | self-propagating high-temperature synthesis (SHS) | | spark plasma sintering (SPS) | | intermetallic compound | | niobium |
| Issue Date: | Jun-2006 |
| Publisher: | Iron and Steel Institute of Japan |
| Journal Title: | ISIJ International |
| Volume: | 46 |
| Issue: | 6 |
| Start Page: | 875 |
| End Page: | 879 |
| Publisher DOI: | 10.2355/isijinternational.46.875 |
| Abstract: | Nb–Al–Si intermetallic alloys having submicron crystal grains have been produced using the self-propagating high-temperature synthesis (SHS, or combustion synthesis) method followed by the bead milling technique and the spark plasma sintering (SPS) method. The intermetallic alloys were combustion-synthesized from elemental powders of niobium, aluminum and silicon, and then ball-milled and bead-milled to reduce the alloy powder particle size. The milled alloy powder was consolidated using the SPS method with a sintering time of 300 s at a sintering temperature of 1 373 K. The increase in milling time reduced the grain size of the sintered alloy. Particularly, the grain size was dramatically reduced when zirconia beads of a 0.2-mm diameter were used after milling with zirconia balls of a 10-mm diameter. The Vickers hardness, bending strength and fracture toughness of the sintered alloys increased with the decrease in grain size. |
| Rights: | 著作権は日本鉄鋼協会にある |
| Type: | article |
| URI: | http://hdl.handle.net/2115/75733 |
| 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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