A simple technique for the measurement of dendritic growth rates in undercooled metallic melts and its application to Ni and Ti

Prediction of the maximal recalescence temperature upon rapid solidification of bulk undercooled Cu70Ni30 alloy

“…This prediction becomes sufficiently accurate if T is sufficiently high. On this basis, Walder and Hindmarsh's experimental results [7,8] can also be explained, since, for pure substance, T 0 reduces to T l .…”

“…This expression assumes that T R can reach the equilibrium liquidus temperature T l . Walder and Ryder [7] and Hindmarsh et al [8] have indeed proved this hypothesis in undercooled pure Ni and water droplet. However, for * Corresponding author.…”

“…In the previous studies [7][8][9][10][11][12][13], the most interesting points correlated with recalescence consist of f s evolving upon recalescence and T R that recalescence can reach. Generally f s can be simply calculated by: f s = C l p T/ H, with C l p as the heat capability of liquid, and H the latent heat of fusion.…”

A real-time synchrotron X-ray study of primary phase nucleation and formation in hypoeutectic Al–Si alloys

“…Other methods of growth rate determination include DS experiments [46][47][48][49][50][51], confocal microscopy [52][53][54], high-speed camera [55,56] or photo-diode [57,58] on levitated undercooled droplets, and microgravity experiments on organic compounds. Note that in the DS experiments the interface growth rate is governed, in part, by the rate of movement of a user-imposed thermal gradient along the specimen, and there is columnar grain growth at least in the early part of the experiment which may be followed by equiaxed growth depending upon other factors.…”

Numerical description for the recalescence of bulk-undercooled Cu70Ni30 alloy

“…Generally, T R is estimated roughly as the equilibrium liquidus temperature T l [35,36]; however, in many experiments, it has been observed as below T l . This decreasing tendency is continuously strengthened with increasing DT [8,11,[37][38][39].…”