Study of a Possibility of Formation of a Splitting Morphology of Dendrites in Alloys of Al in Conditions of High Concentration Gradients
A. G. Borysov, V. Yu. Sheigam
Physical-and-Technological Institute of Metals and Alloys NAS of Ukraine, 34/1 Academician Vernadsky Blvd., UA-03680 Kyiv-142, Ukraine
Received: 28.08.2017. Download: PDF
Peculiarities of dendrite growth during directional solidification under heavy concentration gradients are studied for the Al–Zn, Al–Sn and Al–eutectic Al–Si pairs. Special device is constructed, and two butted cylindrical specimens are positioned into it. As found, a splitting of dendrite steams takes place for the Al–Zn pair in the transition region from Al-based dendrites to Zn-based ones.
Key words: dendrite, concentration gradient, splitting, change of preferential direction.
PACS: 61.25.Mv, 61.66.Dk, 68.55.J-, 68.70.+w, 81.10.Fq, 81.30.Fb, 83.50.Uv
Citation: A. G. Borysov and V. Yu. Sheigam, Study of a Possibility of Formation of a Splitting Morphology of Dendrites in Alloys of Al in Conditions of High Concentration Gradients, Metallofiz. Noveishie Tekhnol., 39, No. 10: 1411—1422 (2017) (in Russian)