Heterogeneous nucleation of α-Al primary crystal on L12 modified Al2.7Ni0.3Ti phase

Heterogeneous nucleation of α-Al primary crystal on L12 modified Al2.7Ni0.3Ti phase

The heterogeneous nucleation of α-Al primary crystal on the L12 modified Al2.7Ni0.3Ti (Al67Ni8Ti25) phase was investigated. To study the effectiveness of heterogeneous nucleation by the L12 modified Al2.7Ni0.3Ti phase, an Al-10 vol % Al2.7Ni0.3Ti refiner was fabricated by spark plasma sintering (SPS...

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Veröffentlicht in:Japanese Journal of Applied Physics 2017-11, Vol.57 (1S)
Hauptverfasser: Watanabe, Yoshimi, Maekawa, Kazunori, Sato, Hisashi
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Maekawa, Kazunori
Sato, Hisashi
description The heterogeneous nucleation of α-Al primary crystal on the L12 modified Al2.7Ni0.3Ti (Al67Ni8Ti25) phase was investigated. To study the effectiveness of heterogeneous nucleation by the L12 modified Al2.7Ni0.3Ti phase, an Al-10 vol % Al2.7Ni0.3Ti refiner was fabricated by spark plasma sintering (SPS). It was found that the maximum grain refinement performance can be achieved by the Al-10 vol % Al2.7Ni0.3Ti refiner after a holding time of 690 s. The mechanical properties of pure Al casts were improved by using the Al-10 vol % Al2.7Ni0.3Ti refiner through grain refinement. However, the grain refinement performance is relatively weaker than expected. This is because the Al-10 vol % Al2.7Ni0.3Ti refiner does not have a high thermal stability.
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To study the effectiveness of heterogeneous nucleation by the L12 modified Al2.7Ni0.3Ti phase, an Al-10 vol % Al2.7Ni0.3Ti refiner was fabricated by spark plasma sintering (SPS). It was found that the maximum grain refinement performance can be achieved by the Al-10 vol % Al2.7Ni0.3Ti refiner after a holding time of 690 s. The mechanical properties of pure Al casts were improved by using the Al-10 vol % Al2.7Ni0.3Ti refiner through grain refinement. However, the grain refinement performance is relatively weaker than expected. 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J. Appl. Phys</addtitle><description>The heterogeneous nucleation of α-Al primary crystal on the L12 modified Al2.7Ni0.3Ti (Al67Ni8Ti25) phase was investigated. To study the effectiveness of heterogeneous nucleation by the L12 modified Al2.7Ni0.3Ti phase, an Al-10 vol % Al2.7Ni0.3Ti refiner was fabricated by spark plasma sintering (SPS). It was found that the maximum grain refinement performance can be achieved by the Al-10 vol % Al2.7Ni0.3Ti refiner after a holding time of 690 s. The mechanical properties of pure Al casts were improved by using the Al-10 vol % Al2.7Ni0.3Ti refiner through grain refinement. However, the grain refinement performance is relatively weaker than expected. 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J. Appl. Phys</addtitle><date>2017-11-28</date><risdate>2017</risdate><volume>57</volume><issue>1S</issue><issn>0021-4922</issn><eissn>1347-4065</eissn><coden>JJAPB6</coden><abstract>The heterogeneous nucleation of α-Al primary crystal on the L12 modified Al2.7Ni0.3Ti (Al67Ni8Ti25) phase was investigated. To study the effectiveness of heterogeneous nucleation by the L12 modified Al2.7Ni0.3Ti phase, an Al-10 vol % Al2.7Ni0.3Ti refiner was fabricated by spark plasma sintering (SPS). It was found that the maximum grain refinement performance can be achieved by the Al-10 vol % Al2.7Ni0.3Ti refiner after a holding time of 690 s. The mechanical properties of pure Al casts were improved by using the Al-10 vol % Al2.7Ni0.3Ti refiner through grain refinement. However, the grain refinement performance is relatively weaker than expected. 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title Heterogeneous nucleation of α-Al primary crystal on L12 modified Al2.7Ni0.3Ti phase
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