(1. 中南大学粉末冶金国家重点实验室，长沙 410083；
2. 深圳市万泽中南研究院有限公司，深圳518017；
3. 中南大学材料科学与工程学院，长沙 410083)
摘 要: 对相图的常用实验测定方法进行综述，以Cr-Ni-Ru三元体系相图的高通量测定为例，展示高效测定二元、三元相图的扩散多元节方法。基于相图计算(Calculation of phase diagrams, CALPHAD)方法，以 Cr-Ru二元体系和Cr-Ni-Ru三元体系的热力学优化为例，阐述Cr-Ni-Ru三元体系热力学数据库建立的具体流程，分析当前镍基高温合金研究效率低下的原因。结果表明：快速建立与定量预测材料成分、相、组织、性能关系的高通量实验和计算方法是促进未来镍基高温合金研究发展的重点。
关键字: 镍基高温合金；扩散多元节；高通量方法； CALPHAD方法；相图；热力学优化
（1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China;
2. Shenzhen Wedge Central South Research Institute Co., Ltd., Shenzhen 518017, China;
3. School of Materials Science and Engineering, Central South University, Changsha 410083, China）
Abstract:The experimental methods for phase diagram determination were reviewed. Comparing with the traditional methods for phase diagram determination, the Cr-Ni-Ru ternary system was employed to illustrate the high efficiency and accuracy of the diffusion multiple technique in the binary and ternary phase diagrams determination. Based on the calculation of phase diagrams (CALPHAD) approach, thermodynamic assessments were performed in the Cr-Ru and Cr-Ni-Ru systems to expound the procedure of the establishment of the Cr-Ni-Ru thermodynamic database. The reasons resulting in the inefficiency of the development of nickel-based superalloys were also discussed. The results show that high-throughput experimental and computational methods for efficiently predicting and establishing the relationships among composition, phase, microstructure and property are fundamental importance for promoting the development of nickel-based super alloys.
Key words: nickel-based superalloy; diffusion multiple; high-throughput method; CALPHAD method; phase diagram; thermodynamic assessment
