材料科学技术(英文版)2024，Vol.189Issue(22) ：96-109.DOI:10.1016/j.jmst.2023.10.062

Printability,microstructures and mechanical properties of a novel Co-based superalloy fabricated via laser powder bed fusion

Chuan Guo Zhen Xu Gan Li Jingchen Wang Xiaogang Hu Ying Li Xiaohan Chen Hui Liu Le Cheng Shiyu Zhong Qiang Zhu Jian Lu
材料科学技术(英文版)2024，Vol.189Issue(22) ：96-109.DOI:10.1016/j.jmst.2023.10.062
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Printability,microstructures and mechanical properties of a novel Co-based superalloy fabricated via laser powder bed fusion

Chuan Guo 1Zhen Xu 2Gan Li 3Jingchen Wang 4Xiaogang Hu 2Ying Li 1Xiaohan Chen 2Hui Liu 5Le Cheng 2Shiyu Zhong 5Qiang Zhu 2Jian Lu6
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作者信息

  • 1. City U-Shenzhen Futian Research Institute,Shenzhen 518045,China
  • 2. Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen 518055,China
  • 3. Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen 518055,China;Department of Mechanical Engineering,Shenyang National Laboratory for Materials Science,Greater Bay Joint Division,City University of Hong Kong,Tat Chee Avenue,Kowloon,Hong Kong,China
  • 4. Centre for Advanced Structural Materials,City University of Hong Kong Shenzhen Research Institute,Greater Bay Joint Division,Shenyang National Laboratory for Materials Science,Shenzhen,518057,China
  • 5. Department of Mechanical Engineering,Shenyang National Laboratory for Materials Science,Greater Bay Joint Division,City University of Hong Kong,Tat Chee Avenue,Kowloon,Hong Kong,China
  • 6. CityU-Shenzhen Futian Research Institute,Shenzhen 518045,China;Department of Mechanical Engineering,Shenyang National Laboratory for Materials Science,Greater Bay Joint Division,City University of Hong Kong,Tat Chee Avenue,Kowloon,Hong Kong,China;Centre for Advanced Structural Materials,City University of Hong Kong Shenzhen Research Institute,Greater Bay Joint Division,Shenyang National Laboratory for Materials Science,Shenzhen 518057,China
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Abstract

High levels of Al and Ti in superalloy compositions normally lead to cracking formation during the laser powder bed fusion process,while these elements are key constituents of strengthening phases.In the cur-rent study,a novel Co-based superalloy with the basic chemical composition of Co-Al-W-Ta-Ti resolved this contradiction,indicating that the part was formed without cracking and simultaneously contained a large amount of strengthening precipitates in the microstructure fabricated via laser powder bed fusion.The printability,microstructures,and mechanical properties of the sample were analysed before and af-ter heat treatment,providing a potential superalloy that can replace Ni-based superalloys fabricated by additive manufacturing in aerospace and other industries with higher temperature and more efficiency.

Key words

Co-based superalloy/Laser powder bed fusion/Printability/Microstructure/Mechanical properties

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基金项目

Shenzhen-Hong Kong science and Technology Innovation Cooperation Zone Shenzhen Park Project(HZQB-KCZYB-2020030)

RGC Themebased Research Scheme(AoE/M-402/20)

National Natural Science Foundation of China(52250710160)

Shenzhen Science and Technology Innovation Committee(KQTD20170328154443162)

Shenzhen Science and Technology Innovation Committee(JCYJ20210324104610029)

Shenzhen Science and Technology Innovation Committee(JCYJ20220818100613028)

出版年

2024
材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCD
影响因子：0.657
ISSN：1005-0302
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