Sidebranch characteristics of pivalic acid dendrites grown under convection-free and diffuso-convective conditions

Measurements of dendrite tip growth and sidebranching in succinonitrile–acetone alloys

“…They found that the mean length of the sidebranches, scaled by the tip radius, is independent of both the growth conditions and the crystalline anisotropy of the material used, up to several hundred dendrite tip radii behind the tip. This finding is in agreement with experimental studies on pure materials, such as SCN, PVA, and xenon [20][21][22][23][24][25][26][27]. However, no power law scaling was observed by Dougherty and coworkers.…”

“…The SCN-acetone system is well suited for the measurement of dendritic growth parameters not only because it is transparent, but also because all relevant thermophysical properties are known accurately and a large body of data is available in the limit of vanishing solute concentration (i.e., pure SCN) [15,[23][24][25][26]28]. We reexamine in detail the dendrite tip velocity and shape selection for alloys, in order to obtain better validation of the relevant theories and improved understanding of the effects of thermosolutal melt convection.…”

Position and spacing of sidebranches in binary system

“…1(a) shows that the scaled distance decreases with undercooling increasing, but the change is very small especially for the first sidebranch. Our results are agreement with the experimental observation for the pure materials [13,14]. Fig.…”

Solidification microstructures and solid-state parallels: Recent developments, future directions

“…In addition to the arm spacings during directional solidification, gravity-driven convection can also influence the side-branch characteristics of freely grown equiaxed dendrites, and significant differences to corresponding microgravity experiments have been observed [277][278][279]. Forced convection, as in DC casting of aluminum alloys, can affect the formation of feathery grains made of twinned dendrites [280].…”