Synchronously enhanced printability and properties of additively manufactured nickel-based superalloys via alloying minor Sc

Liming Tan; Xiaoqiong Ouyang; Lin Ye; Heng Dong; Xiangyou Xiao; Jie Su; Lan Huang; Feng Liu

Journal of Materials Research and Technology (May 2024)

Synchronously enhanced printability and properties of additively manufactured nickel-based superalloys via alloying minor Sc

Liming Tan,
Xiaoqiong Ouyang,
Lin Ye,
Heng Dong,
Xiangyou Xiao,
Jie Su,
Lan Huang,
Feng Liu

Affiliations

Liming Tan: State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, China; Research Institute of Powder Metallurgy, Central South University, Changsha, 410083, China
Xiaoqiong Ouyang: State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, China; Research Institute of Powder Metallurgy, Central South University, Changsha, 410083, China
Lin Ye: State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, China; Research Institute of Powder Metallurgy, Central South University, Changsha, 410083, China
Heng Dong: State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, China; Research Institute of Powder Metallurgy, Central South University, Changsha, 410083, China
Xiangyou Xiao: State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, China; Research Institute of Powder Metallurgy, Central South University, Changsha, 410083, China
Jie Su: State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, China; Research Institute of Powder Metallurgy, Central South University, Changsha, 410083, China
Lan Huang: State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, China; Research Institute of Powder Metallurgy, Central South University, Changsha, 410083, China; Corresponding author. Research Institute of Powder Metallurgy, Central South University, Changsha, 410083, China.
Feng Liu: State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, China; Research Institute of Powder Metallurgy, Central South University, Changsha, 410083, China; Corresponding author. Central South University, #932 south Lushan road, Yuelu district, Changsha, Hunan province, 410083, China.

Journal volume & issue: Vol. 30
pp. 890 – 893

Abstract

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As major forming elements of γ′ strengthening phase, Al and Ti are critical for achieving superior properties of Ni-based superalloy. However, Al + Ti over 6 wt% leads to poor printability and cracking during additive manufacturing. In this work, the printability and properties of a nickel-based superalloy with Al + Ti reaching 7 wt% is synchronously improved via alloying minor Sc, the mechanism behind that is revealed by investigating the effects of Sc on the grain size, precipitation, and tensile fracture behavior of that nickel-based superalloy. This work provides a promising alternative method for optimizing the performance of superalloys prepared by additive manufacturing.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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