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

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外文摘要：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.

外文关键词：

Co-based superalloyLaser powder bed fusionPrintabilityMicrostructureMechanical properties

作者：

Chuan Guo、Zhen Xu、Gan Li、Jingchen Wang、Xiaogang Hu、Ying Li、Xiaohan Chen、Hui Liu、Le Cheng、Shiyu Zhong、Qiang Zhu、Jian Lu

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作者单位：

City U-Shenzhen Futian Research Institute,Shenzhen 518045,China

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

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

CityU-Shenzhen Futian Research Institute,Shenzhen 518045,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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基金：

Shenzhen-Hong Kong science and Technology Innovation Cooperation Zone Shenzhen Park ProjectRGC Themebased Research SchemeNational Natural Science Foundation of ChinaShenzhen Science and Technology Innovation CommitteeShenzhen Science and Technology Innovation CommitteeShenzhen Science and Technology Innovation Committee

项目编号：

HZQB-KCZYB-2020030AoE/M-402/2052250710160KQTD20170328154443162JCYJ20210324104610029JCYJ20220818100613028

出版年：

2024

DOI：

10.1016/j.jmst.2023.10.062

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

年,卷(期)：2024.189(22)