Hierarchical microstructure and enhanced mechanical properties of SLM-fabricated GH5188 Co-superalloy

被引：32
|
作者：
Wei, W. [1 ]
Xiao, J. C. [1 ]
Wang, C. F. [2 ]
Cheng, Q. [1 ]
Guo, F. J. [1 ]
He, Q. [1 ]
Wang, M. S. [1 ]
Jiang, S. Z. [1 ]
Huang, C. X. [1 ]
机构：
[1] Sichuan Univ, Sch Aeronaut & Astronaut, Chengdu 610065, Peoples R China
[2] Chengdu Yonsea Addform Technoligies Co Ltd, Chengdu 610065, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2022年 / 831卷
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Selective laser melting; Co-based superalloy; Hierarchical microstructure; Mechanical properties; LASER; STRENGTH; EVOLUTION; ALLOYS; TEXTURE; FATIGUE; HOT;
D O I：
10.1016/j.msea.2021.142276
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this paper, the GH5188 Co-based superalloy was fabricated by selective laser melting (SLM), and its microstructure was systematically investigated. A typical hierarchical microstructure with a < 001 > texture along the building direction is formed during SLM, and each elongated grain consisted of extremely fine (<1 mu m) cells. Meanwhile, the cell boundaries were enriched with W, Cr, and Mn, while Ni was diluted, which formed fine M23C6/M6C eutectic carbides (similar to 80 nm). Nano-indentation tests and tensile tests were applied to test the mechanical properties. The as-SLM samples exhibited excellent performance as well as nano-hardness, strength, and ductility when compared to forging and casting samples. These results suggested promising potential for SLMfabricated GH5188 superalloy parts.
引用
收藏
页数：9
相关论文
共 50 条
  • [1] Research on microstructure and properties enhancement of TiN/GH5188 Co-superalloy composite fabricated by laser powder bed fusion
    Yan, Zhongwei
    Trofimov, Vyacheslav
    Song, Changhui
    Xiao, Yunmian
    Liu, Linqing
    Huang, Junfei
    Yang, Yongqiang
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2024, 913
  • [2] Effect of TLP diffusion welding process parameters on microstructure and mechanical properties of GH5188 superalloy joint
    Teng, Junfei
    Li, Jiahao
    Zhou, Huiyan
    Wu, Dawei
    Xu, Haitao
    Lin, Tiesong
    Huang, Yongde
    [J]. Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica, 2024, 45 (08):
  • [3] Investigation on microstructure and mechanical properties of GH5188 superalloy TLP joints using nickel based alloy interlayer
    Guo, Wei
    Xin, Jingru
    Gao, Long
    Li, Jinzheng
    Liu, Wei
    Hao, Ding
    Ma, Yana
    Xiong, Jiangtao
    Li, Jinglong
    [J]. Materials Science and Engineering: A, 2024, 909
  • [4] Microstructure Characteristics and Microstructure Evolution during Hot and Cold Working Process of GH5188 Superalloy
    Gao Yawei
    Dong Jianxin
    Yao Zhihao
    Zhang Maicang
    Niu Yongji
    [J]. RARE METAL MATERIALS AND ENGINEERING, 2017, 46 (10) : 2922 - 2928
  • [5] Microstructure and mechanical properties of GH5188 superalloy additively manufactured via ultrasonic-assisted laser powder bed fusion
    Yan, Zhongwei
    Trofimov, Vyacheslav
    Song, Changhui
    Han, Changjun
    Yang, Yongqiang
    Yang, Chao
    Xiao, Yunmian
    Deng, Zhengtai
    Chen, Jie
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2023, 939
  • [6] Microstructure Characteristics and Microstructure Evolution during Hot and Cold Working Process of GH5188 Superalloy
    Gao, Yawei
    Dong, Jianxin
    Yao, Zhihao
    Zhang, Maicang
    Niu, Yongji
    [J]. Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering, 2017, 46 (10): : 2922 - 2928
  • [7] Defect characteristics within SLM-fabricated GH3536 superalloy dependence on ?CT characterization br
    Gao, Xiangxi
    Yang, Pinghua
    Qiao, Haiyan
    Zhang, Shuai
    [J]. CAILIAO GONGCHENG-JOURNAL OF MATERIALS ENGINEERING, 2022, 50 (10): : 63 - 72
  • [8] Effect of solution heat treatment on the microstructure and mechanical properties of laser melting deposited GH 5188 superalloy
    Yan Wang
    Wei Liu
    Shuai Huang
    Chao Gao
    Neng Li
    Huaping Xiong
    [J]. Welding in the World, 2024, 68 : 939 - 951
  • [9] Microstructure and yield strength of SLM-fabricated CM247LC Ni-Superalloy
    Wang, Xiqian
    Carter, Luke N.
    Pang, Bo
    Attallah, Moataz M.
    Loretto, Michael H.
    [J]. ACTA MATERIALIA, 2017, 128 : 87 - 95
  • [10] Effect of solution heat treatment on the microstructure and mechanical properties of laser melting deposited GH 5188 superalloy
    Wang, Yan
    Liu, Wei
    Huang, Shuai
    Gao, Chao
    Li, Neng
    Xiong, Huaping
    [J]. WELDING IN THE WORLD, 2024, 68 (04) : 939 - 951
12345