A high-throughput strategy for rapid synthesis and characterization of Ni-based superalloys

• Published in: Rare metals Vol. 41; no. 8; pp. 2693 - 2700
• Main Authors: Zhao, Lei, Liu, Su-Ran, Jiang, Liang, Yang, Li-Xia, Zhu, Li-Long, Wang, Hui, Zhang, Wen-Yu, Huang, Zai-Wang, Deng, Yuan-Bin, Broeckmann, Christoph, Huang, Hai-Liang, Wang, Hai-Zhou
• Format: Journal Article
• Language: English
• Published: Beijing Nonferrous Metals Society of China 01.08.2022; Springer Nature B.V
• Subjects: Biomaterials; Chemistry and Materials Science; Combinatorial analysis; Energy; Finite element method; High temperature; Materials Engineering; Materials Science; Metallic Materials; Nanoscale Science and Technology; Nickel; Nickel base alloys; Niobium; Original Article; Physical Chemistry; Solid phases; Superalloys; Synthesis; Tantalum; Honeycomb-array structure; Superalloy; Zero-phase-fraction (ZPF) line; Finite element analysis (FEA); Bulk combinatorial synthesis
• ISSN: 1001-0521; 1867-7185
• DOI: 10.1007/s12598-022-01965-8

This study developed a new high-throughput strategy, designated as hot-isostatic-pressing-based micro-synthesis approach (HIP-MSA), to optimize high-performance nickel-based superalloys in a rapid, efficient, and cost-effective manner. A specific honeycomb-array structure containing 106 discrete cells was designed and optimized using finite element analysis (FEA) and then applied to create a combinatorial library consisting of 106 Ni-based superalloys with various Co, Nb and Ta concentrations. By integration with high-throughput characterization tools, extensive composition and phase structure data were collected quickly and efficiently. In the superalloys with higher amounts of Nb and Ta, the detrimental η phase displaying needle-like morphology was observed, and its content (wt%) increased drastically with Ta and Nb contents increasing. However, the increase of Co addition in those alloys was confirmed to be surprisingly beneficial by significantly suppressing the formation of η phase that was induced by high Nb and Ta contents. The zero-phase-fraction (ZPF) line of η phase was established, which is critical to design superalloy chemistry for superior microstructural stability at high-temperature service conditions. Graphical abstract