کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1794681 | 1023704 | 2009 | 5 صفحه PDF | دانلود رایگان |
The compound-forming alloy Bi-40 wt%Te was selected to explore effects of the temperature-induced liquid–liquid structure transition (TI-LLST) on solidification. The resistivity–temperature pattern of the molten alloy suggested that an irreversible TI-LLST occurred from 694.6 to 723.2 °C as temperature elevated. When solidified from the melt undergoing the TI-LLST, the solidification undercooling of the primary phase Bi2Te3 was enlarged and its growth manner was obviously changed, resulting in the spirally curling refined branches, contrary to the orientated thick rod-like crystals solidified from the melt failed to undergo the TI-LLST. Moreover, the volume fraction of the peritectic phase increased from 30.6% to 56.4%, which implied that the phase competition behavior during the peritectic reaction was also changed.
Journal: Journal of Crystal Growth - Volume 311, Issue 16, 1 August 2009, Pages 4129–4133