Regular Structure Formation of Hypermonotectic Al-In Alloys

Abstract:

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Since the liquid / liquid separation occurs in hypermonotectic alloys and the liquid / liquid interface agitates mass transfer around solidifying front, it is rather difficult to achieve the aligned-rod structure. The high magnetic filed such as 10T achieved the aligned-rod structure in the Al-10at%In alloys. The in-situ observations of the monotectic solidification in the Al-10at%In alloys were performed using synchrotron radiation X-ray. Coarse and fine In rods coexisted during the unidirectional solidification without magnetic field. The local melt flow induced by the In-rich liquid / Al-rich liquid interface enhanced the mass transfer and consequently the coarse rods could continuously grow. The suppression of the local melt flow of which scale was several 10 m by the high static magnetic field resulted in the aligned-rod structure.

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Periodical:

Edited by:

A. Roósz, V. Mertinger, P. Barkóczy and Cs. Hoó

Pages:

131-136

DOI:

10.4028/www.scientific.net/MSF.649.131

Citation:

H. Yasuda et al., "Regular Structure Formation of Hypermonotectic Al-In Alloys", Materials Science Forum, Vol. 649, pp. 131-136, 2010

Online since:

May 2010

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$35.00

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