Markedly enhancing mechanical properties of powder metallurgy superalloy by hot oscillatory forging

Dejian Sun; Linfei Guo; Guanhua Wu; Yaqian Tong; Yang Gao; Songqin Xia; Lei Fan; Xiaoqin Guo; Linan An

Journal of Materials Research and Technology (May 2024)

Markedly enhancing mechanical properties of powder metallurgy superalloy by hot oscillatory forging

Dejian Sun,
Linfei Guo,
Guanhua Wu,
Yaqian Tong,
Yang Gao,
Songqin Xia,
Lei Fan,
Xiaoqin Guo,
Linan An

Affiliations

Dejian Sun: School of Materials, Zhengzhou University of Aeronautics, Zhengzhou, 450046, Henan, China; Henan Key Laboratory of Aeronautical Materials and Application Technology, Zhengzhou University of Aeronautics, Zhengzhou, Henan, 450046, China; Corresponding author. School of Materials, Zhengzhou University of Aeronautics, Zhengzhou, 450046, Henan, China.
Linfei Guo: School of Materials, Zhengzhou University of Aeronautics, Zhengzhou, 450046, Henan, China; Henan Key Laboratory of Aeronautical Materials and Application Technology, Zhengzhou University of Aeronautics, Zhengzhou, Henan, 450046, China
Guanhua Wu: School of Materials, Zhengzhou University of Aeronautics, Zhengzhou, 450046, Henan, China; Henan Key Laboratory of Aeronautical Materials and Application Technology, Zhengzhou University of Aeronautics, Zhengzhou, Henan, 450046, China
Yaqian Tong: School of Materials, Zhengzhou University of Aeronautics, Zhengzhou, 450046, Henan, China; Henan Key Laboratory of Aeronautical Materials and Application Technology, Zhengzhou University of Aeronautics, Zhengzhou, Henan, 450046, China
Yang Gao: School of Materials, Zhengzhou University of Aeronautics, Zhengzhou, 450046, Henan, China; Henan Key Laboratory of Aeronautical Materials and Application Technology, Zhengzhou University of Aeronautics, Zhengzhou, Henan, 450046, China
Songqin Xia: School of Nuclear Science and Engineering, North China Eletric Power University, Beijing, 102206, China
Lei Fan: School of Materials, Zhengzhou University of Aeronautics, Zhengzhou, 450046, Henan, China; Henan Key Laboratory of Aeronautical Materials and Application Technology, Zhengzhou University of Aeronautics, Zhengzhou, Henan, 450046, China
Xiaoqin Guo: School of Materials, Zhengzhou University of Aeronautics, Zhengzhou, 450046, Henan, China; Henan Key Laboratory of Aeronautical Materials and Application Technology, Zhengzhou University of Aeronautics, Zhengzhou, Henan, 450046, China
Linan An: School of Mechanical Engineering, Dongguan University of Technology, Dongguan, Guangdong, 523808, China; Corresponding author.

Journal volume & issue: Vol. 30
pp. 8482 – 8487

Abstract

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A powder metallurgy superalloy prepared by hot pressing (HP) was forged under static and oscillatory pressures. The microstructure, mechanical properties and fracture behavior of the sample before and after forging were characterized in detail. The results showed that the forging processes could effectively break the prior particle boundaries (PPBs) and reduce the PPBs precipitates, thus significantly improved the mechanical properties of the material. In particular, the hot oscillatory forging (HOF) process increased the tensile elongation and stress rapture life of the hot forged sample by 1.3 and 3.5 times, respectively. The present study suggests that HOF could be a promising technique for preparing high-performance superalloys.

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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