Phase separated alloys have attracted increasing attention in recent years due to their unique physical and mechanical properties, as well as their broad application prospects in mechanical, automotive, and electronic fields. However, under conventional solidification conditions on the ground, this type of alloy is difficult to prepare and its application is greatly limited. Recently, the reporter of Science and Technology Daily learned from the Institute of Metals of the Chinese Academy of Sciences that the Zhao Jiuzhou researcher project team of the Institute has made important progress in the preparation of phase separation alloys with the help of space microgravity environment. They established a model of the solidification process of phase separated alloys and explored the feasibility of using electric fields, magnetic fields, and microalloying to regulate the solidification process of phase separated alloys and promote the formation of in-situ composite solidification structures. In daily life, there are many phenomena of phase separation, such as oil floating on top of water or forming oil shells on the surface of water droplets. Many alloys also experience a similar "miscibility" phenomenon during solidification, where the alloy melt first precipitates second phase droplets or particles during cooling, resulting in liquid-liquid or liquid-solid phase separation. This type of alloy is collectively referred to as phase separation alloy. For a long time, materials scientists have been dedicated to the study of the solidification process of phase separated alloys, hoping to obtain phase separated alloy materials with ideal solidification structures and meet industrial needs by using reasonable solidification methods and optimizing solidification process parameters. However, when metals with phase separation solidify under ground gravity conditions, they are prone to forming unevenly distributed and even layered structures of metal elements. Therefore, the development and application of this type of alloy have been severely restricted for a long time Zhao Jiuzhou said. The microgravity environment in space has brought hope for solving this problem. The space environment can provide long-term stable microgravity conditions, effectively eliminating the phenomena of melt convection and deposition and floating of precipitated phases caused by ground gravity, providing excellent conditions for the theoretical research of phase separation alloy solidification. In recent years, with the support of China's manned space station project and other projects, the Zhao Jiuzhou project team has optimized the composition and solidification process of phase separation alloys based on extensive ground research. Solidification experiments of phase separation alloys have been carried out on Tiangong-2 and the Chinese space station, obtaining composite material samples with uniformly distributed in-situ particles of aluminum bismuth tin and gadolinium titanium cobalt, as well as spherical samples with shell core structures. Through collaborative research between heaven and earth, the research team has revealed the solidification process of phase separated alloys and the influence of gravity/microgravity, developed the solidification theory of phase separated alloys, and proposed methods for controlling the solidification structure of phase separated alloys, laying the foundation for the composition design and industrial preparation technology research and development of phase separated alloys. More importantly, during the project research process, the team attaches great importance to the application of theoretical research results in industrial production. Guided by relevant theories, they have developed various preparation techniques for key materials, and the phase separated alloy materials prepared have been applied in fields such as nuclear power, electronic communication, and equipment manufacturing. Based on these studies, from 2004 to present, we have published over 200 papers in journals such as National Science Review and Materials Journal, obtained over 40 authorized invention patents, and authored an academic monograph titled 'Theoretical Basis for In Situ Formation of Metal Matrix Composites' Zhao Jiuzhou said. These achievements have received high praise from scholars both domestically and internationally. They believe that Zhao Jiuzhou's team has conducted pioneering research on the solidification behavior of binary and ternary phase separated alloys using spacecraft, which helps clarify the dynamic details of the solidification microstructure evolution of phase separated alloys. (New Society)