Modeling of dendrite arm fragmentation and dendrite arm coarsening⋆Hui Fang, Hua Xue, Qingyu Zhang, Shiyan Pan, Mengdan Hu and Mingfang ZhuEur. Phys. J. E, 43 7 (2020) 44DOI: https://doi.org/10.1140/epje/i2020-11968-5