Diffusion-induced abnormal tertiary dendrite during peritectic solidification in a temperature gradient

• 作者: Peng Peng Anqiao Zhang Jinmian Yue Xudong Zhang Yuanli Xu
• 来源期刊: 材料科学技术（英文版）
• 年，卷（期）: 2021,（13）
• 页码范围: 197-201
• 页数: 5页
• 语种: 英文

摘要

1.Introduction Dendritic structure are commonly encountered during solidification [1-4], especially in systems freezing with relatively low entropies of transformation [1,5].Generally speaking, the dendritic structure is composed of primary dendrite stem, secondary branch and even tertiary and higher order dendrite arms [1].Different kinds of models have been proposed for describing the growth of primary dendrite [1-5] and secondary dendrite arms [1,6,7].In recent decades, dendritic growth of many industrial important peritectic alloys featured by peritectic reaction L+α→β have been witnessed [8-10].The dendritic growth is more complex during peritectic solidification due to the involvement of peritectic β phase.