Comments on the work by Wei and co-workers on free eutectic and dendritic solidification from undercooled metallic melts

Inconsistencies throughout a series of articles contributed by Wei and co-workers on free solidification from undercooled metallic melts are pointed out due to their simply grouping the unconstrained dendritic growth models and the constrained eutectic models. Other misconceptions in the use of the dendrite growth model, the estimation of droplet undercooling, the calculation of partition coefficient, and the evaluation of physical properties of alloys are clarified.