Influence of phosphorous on nucleation and growth of grains during solidification in a NiCrFe alloy

作     者：Xintong Lian Wenru Sun Litao Chang Fang Liu Xin Xin 

作者机构：Institute of Metal Research Chinese Academy of Sciences School of Materials Science and Engineering University of Science and Technology of China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2019年第35卷第1期

页      面：134-141页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：NiCrFe alloy Phosphorus Segregation Nucleation Grain growth 

摘      要：The influence of phosphorus on the solidification of a NiCrFe model alloy has been investigated through a series of analytical techniques. It was found that increasing phosphorous additions greatly influenced the as-cast microstructure, changing from equiaxed grains to columnar grains in the center of ingots. It is indicated that the increase of phosphorous reduced the nucleation of grains and promoted dendrite growth during solidification. Furthermore, the addition of phosphorus in alloys also caused the segregation and phase transformation at grain boundaries and in interdendritic regions. The mechanism by which phosphorus influence the solidification of alloys was discussed based on experimental results as well.