The inclusion removal behavior during electron beam smelting of DD98M alloy

Gengyi Dong; Xiaogang You; Liyang Dong; Yijiala Yiliti; Zhaohui Xu; Haijing Zhou; Yinong Wang; Yi Tan

Journal of Materials Research and Technology (Sep 2022)

The inclusion removal behavior during electron beam smelting of DD98M alloy

Gengyi Dong,
Xiaogang You,
Liyang Dong,
Yijiala Yiliti,
Zhaohui Xu,
Haijing Zhou,
Yinong Wang,
Yi Tan

Affiliations

Gengyi Dong: School of Materials Science and Engineering, Dalian University of Technology, Dalian, 116024, China; Key Laboratory of Materials Modification by Laser, Ion and Electron Beams Ministry of Education, Dalian University of Technology, Dalian, 116024, China
Xiaogang You: School of Materials Science and Engineering, Dalian University of Technology, Dalian, 116024, China; Key Laboratory for Energy Beam Metallurgy and Advanced Materials Preparation of Liaoning Province, Dalian, 116024, China; Key Laboratory of Materials Modification by Laser, Ion and Electron Beams Ministry of Education, Dalian University of Technology, Dalian, 116024, China; Corresponding author.
Liyang Dong: School of Materials Science and Engineering, Dalian University of Technology, Dalian, 116024, China; Key Laboratory of Materials Modification by Laser, Ion and Electron Beams Ministry of Education, Dalian University of Technology, Dalian, 116024, China
Yijiala Yiliti: School of Materials Science and Engineering, Dalian University of Technology, Dalian, 116024, China; Key Laboratory of Materials Modification by Laser, Ion and Electron Beams Ministry of Education, Dalian University of Technology, Dalian, 116024, China
Zhaohui Xu: School of Materials Science and Engineering, Dalian University of Technology, Dalian, 116024, China; Key Laboratory of Materials Modification by Laser, Ion and Electron Beams Ministry of Education, Dalian University of Technology, Dalian, 116024, China
Haijing Zhou: Gaona Aero Material Co., Ltd, Beijing, 100081, China
Yinong Wang: School of Materials Science and Engineering, Dalian University of Technology, Dalian, 116024, China; Key Laboratory of Materials Modification by Laser, Ion and Electron Beams Ministry of Education, Dalian University of Technology, Dalian, 116024, China; Corresponding author.
Yi Tan: School of Materials Science and Engineering, Dalian University of Technology, Dalian, 116024, China; Key Laboratory for Energy Beam Metallurgy and Advanced Materials Preparation of Liaoning Province, Dalian, 116024, China; Key Laboratory of Materials Modification by Laser, Ion and Electron Beams Ministry of Education, Dalian University of Technology, Dalian, 116024, China

Journal volume & issue: Vol. 20
pp. 4297 – 4305

Abstract

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The DD98M alloy was prepared by electron beam smelting, and the effect of electron beam smelting parameters on the inclusion removal behavior was studied. The inclusion removal thermodynamics and kinetic mechanisms were analyzed. The results show that the O and N in the DD98M alloy can be reduced by 92.5% and 88.4% when smelted for 30 min with power of 12 kW, and no obvious inclusions are found in the microstructures. Increasing the smelting power or prolonging the smelting time will promote the removal of inclusion effectively. The inclusions are concentrated in the central area of the electron beam under the combined action of buoyancy and Marangoni effect. The inclusions in the near-surface area of the melt can be removed by dissolution, and the inclusion particles floating above the melt level can be decomposed under the action of electron beam bombardment.

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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