|About this Abstract
||Liquid Metal Processing & Casting Conference (LMPC 2019)
||Liquid Metal Processing & Casting
||P8: Rapid Solidification and Microstructure Formation in Designed Ni-based Immiscible Alloys
||Jie He, X. Sun, Y. Xi, H. Ma, L. Zhang, H. Jiang, J. Zhao, M. Zhu, H. Hao
|On-Site Speaker (Planned)
In this work, a quaternary Ni–Cu–Nb–Ta system has been designed to obtain composite microstructures with spherical crystalline Cu-rich particles embedded in amorphous Ni-rich matrix and with glassy Ni-rich particles embedded in crystalline Cu-rich matrix. The alloy samples were prepared by using rapid quenching. The microstructure and related properties of the as-quenched alloy samples were characterized by X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy, and differential scanning calorimetry. It shows that the spherical crystalline Cu-rich particles are embedded in the amorphous Ni-rich matrix. The average size of the Cu-rich particles is strongly dependent upon the Cu content. The effect of the alloy composition on the behavior of liquid-liquid phase separation and microstructure evolution was discussed. The formation of structure with the glassy Ni-rich particles distributed in crystalline Cu-rich matrix and thereby the effect of the structure on the related properties were analyzed.
||Definite: At-meeting proceedings