ISSN: 2165-3992
CODEN: MPCACD
Published Online: 1 September 2012
Page Count: 16

---

Tracking Interphases in Directionally Solidified Zn-Al Binary Alloys

Gueijman, Sergio F.
Professor at the School of Sciences, Univ. of Misiones, Posadas-Misiones,

Schvezov, Carlos E.
Member of the Scientific Research Career (CIC) of the National Science Research Council of Argentina (CONICET); and Professor at the School of Sciences, Univ. of Misiones, Posadas-Misiones,

Ares, Alicia E.
Member of the Scientific Research Career (CIC) of the National Science Research Council of Argentina (CONICET); and Professor at the School of Sciences, Univ. of Misiones, Posadas-Misiones,

(Received 29 September 2011; accepted 27 July 2012)

Abstract

In the present work, we investigated the movement of [liquid/(solid + liquid)] interphases [L/(S + L)], [(solid + liquid)/(eutectic + solid + liquid)] interphases [(S + L)/(E + L)], [(eutectic + solid+ liquid)/solid] interphases [(E + L)/S], and [(solid + liquid)/solid] interphases [(S + L)/S], running in a binary Zn-Al alloy system from the chilled ends of a hemicylindrical sample. We found that under specific solidification conditions, new [(S + L)/(E + L)] and [(S + L)/S] interphases can be created in the center of the sample, and then move toward the ends of the probe and collide with the solidification advancing fronts. In a horizontal setup with chilled ends we determined the speeds and accelerations of the four imposed interphases, two of which moved from left to right and two of which moved from right to left. We were also able to detect the creation of new [(S + L)/(E + L)] and [(E + L)/S] or [(S + L)/S] interphases created near the center of the sample, and to calculate their speeds and accelerations from the near beginning of the creation to the instant in which they collided with the imposed solidification fronts.

Keywords:
directional solidification, zinc-aluminum alloys, interphases of solidification, interphase boundary dynamics, phase transformations

Paper ID: MPC20120017
DOI: 10.1520/MPC20120017
ASTM International is a member of CrossRef.

Author Title Tracking Interphases in Directionally Solidified Zn-Al Binary Alloys Symposium , 0000-00-00 Committee A01