Optimizing the Thermomechanical Process of Nickel-Based ODS Superalloys by an Efficient Method

Wuqiang He; Feng Liu; Liming Tan; Zhihui Tian; Zijun Qin; Lan Huang; Xiangyou Xiao; Guowei Wang; Pan Chen; Baogang Liu

doi:10.3390/ma15124087

Materials (Jun 2022)

Optimizing the Thermomechanical Process of Nickel-Based ODS Superalloys by an Efficient Method

Wuqiang He,
Feng Liu,
Liming Tan,
Zhihui Tian,
Zijun Qin,
Lan Huang,
Xiangyou Xiao,
Guowei Wang,
Pan Chen,
Baogang Liu

Affiliations

Wuqiang He: State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
Feng Liu: State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
Liming Tan: State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
Zhihui Tian: College of Science, Huazhong Agriculture University, Wuhan 430070, China
Zijun Qin: State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
Lan Huang: State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
Xiangyou Xiao: State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
Guowei Wang: State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
Pan Chen: School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
Baogang Liu: School of Energy and Electromechanical Engineering, Hunan University of Humanities, Science and Technology, Loudi 417000, China

DOI: https://doi.org/10.3390/ma15124087
Journal volume & issue: Vol. 15, no. 12
p. 4087

Abstract

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Thermo-mechanical process of nickel-based oxide dispersion strengthened (ODS) superalloys is critical to produce desired components. In this study, an efficient method of consolidating powder is introduced to optimize the preparation process, microstructure and properties of nickel-based ODS superalloys. The influences of consolidation temperature, strain rate and ball milling time on the hardness of nickel-based superalloys were studied. The relationship among process, microstructure and hardness was established, the nanoparticles strengthening and grain boundary strengthening in nickel-based ODS superalloys were discussed. The results indicate that long ball milling time, moderately low consolidation temperature and high strain rates are beneficial to improving properties of nickel-based superalloys. Moreover, dispersion strengthening of nanoparticles and grain boundary strengthening play important roles in enhancing nickel-based ODS superalloys.

Published in Materials

ISSN: 1996-1944 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering; Technology: Engineering (General). Civil engineering (General); Science: Natural history (General): Microscopy; Science: Physics: Descriptive and experimental mechanics
Website: http://www.mdpi.com/journal/materials/

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