Grain Refinement and Improvement in Mechanical Properties of Nb-Al-Si Intermetallic Alloys
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概要
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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.
- 社団法人 日本鉄鋼協会の論文
- 2006-06-15
著者
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Matsuura Kiyotaka
Division Of Materials Science And Engineering Hokkaido University
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Kudoh Masayuki
Division Of Materials Science And Engineering Faculty Of Engineering Hokkaido University
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Matsuura Kiyotaka
Division Of Material Science And Engineering Hokkaido University
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Kata Dariusz
Department Of Ceramics Technology Agh University Of Science And Technology
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LIS Jerzy
Department of Ceramics Technology, AGH University of Science and Technology
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Lis Jerzy
Department Of Ceramics Technology Agh University Of Science And Technology
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