This study developed a new high-throughput strategy,designated as hot-isostatic-pressing-based micro-synthesis approach(HIP-MSA),to optimize high-perfor-mance nickel-based superalloys in a rapid,efficient,and cost-effective manner.A specific honeycomb-array struc-ture containing 106 discrete cells was designed and opti-mized 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 col-lected 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 con-tents 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.

Lei Zhao;Su-Ran Liu;Liang Jiang;Li-Xia Yang;Li-Long Zhu;Hui Wang;Wen-Yu Zhang;Zai-Wang Huang;Yuan-Bin Deng;Christoph Broeckmann;Hai-Liang Huang;Hai-Zhou Wang

Beijing Advanced Innovation Center for Materials Genome Engineering,Beijing Key Laboratory of Metal Materials Characterization,Central Iron and Steel Research Institute,Beijing 100081,China;National Center for Materials Service Safety,University of Science and Technology Beijing,Beijing 100083,China;Institute for Advanced Studies in Precision Materials,Yantai University,Yantai 264005,China;State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China;Institute for Materials Applications in Mechanical Engineering,RWTH Aachen University,Aachen 52062,Germany

稀有金属（英文版）

[1]Lei Zhao;Su-Ran Liu;Liang Jiang;Li-Xia Yang;Li-Long Zhu;Hui Wang;Wen-Yu Zhang;Zai-Wang Huang;Yuan-Bin Deng;Christoph Broeckmann;Hai-Liang Huang;Hai-Zhou Wang-.A high-throughput strategy for rapid synthesis and characterization of Ni-based superalloys)[J].稀有金属（英文版）,2022(08):2693-2700

ZPF

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