Hot Isostatic Pressing High Throughput Synthesis and Characterization for Ni-base Powder Superalloys
Zhao Lei1, Jiang Liang2, Liu Suran3, Huang Zaiwang4, Wang Hui1, Yang Lixia1, Wang Haizhou1*
1Central Iron & Steel Research Institute, Beijing, 100081, China
2Yantai University, Shandong 264005, China
3University of Science & Technology Beijing, Beijing, 100083, China
4Central South University, Hunan, 410083, China

EXTENDED ABSTRACT: Materials genome engineering integrates three technologies: high-throughput computing, high-throughput experiment and special database to accelerate the efficiency of material R & D and reduce the cost of R & D. In view of the shortcomings of the existing high-throughput synthesis technologies of metal materials, such as less material composition, small effective size, difficult characterization and high cost, a high-throughput micro manufacturing technology based on hot isostatic pressing (HIP) was studied. A honeycomb combinatorial material of Ni-base power superalloys with 106 components was produced by HIP high-throughput synthesis. The thermal diffusion behavior of Co, Ta, Nb pure powder and A2 superalloy powder was simulated by thermo-Calc. The results guided the process of HIP high-throughput synthesis and the components in each cell of the honeycomb combinatorial material were completely homogenized after 5 days thermal homogenization at 1200℃. The distributions data of contents, γ’ phase, η harmful phase with needle shape and hardness were gained efficiently via high throughput characterizations of μ-Xray and μ-XRD, SEM, EDS and micron indentation tests. The statistic spatial-mapping correlation among the composition, microstructure and hardness of Ni-base superalloys was established. The research show that the combinatorialalloy state was very similar to those produced by traditional process in microstructure and property. This paper has gotten through the path of powder metallurgy HIP high-throughput micro-synthesis, which can accelerate R & D of advanced materials.
REFERENCE
[1] Zhao L. et al., Metall Mater Trans A, 52(4), (2021)1159-1168
[2] Zhao L., Acta Metall Sin, 2021.4.30 online， doi:10.11900/0412.1961.2021.00070