Effects of boron addition on the microstructure and creep properties of a Ni-Fe-based superalloy weld metal alloy

被引：2
|
作者：
Xie, Wencai [1 ,2 ]
Wu, Dong [1 ]
Lu, Shanping [1 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
[2] Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
来源：
MATERIALS RESEARCH EXPRESS | 2022年 / 9卷 / 02期
基金：
中国国家自然科学基金;
关键词：
superalloy; weld metal; creep; boron; M23(C; B)6; MECHANICAL-PROPERTIES; WELDABILITY; PERFORMANCE; STABILITY; DUCTILITY; STRENGTH;
D O I：
10.1088/2053-1591/ac5078
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The role of boron in the creep properties and grain boundary characteristics in a new Ni-Fe-based weld metal suitable for advanced ultra-supercritical (A-USC) coal-fired power plant applications has been investigated. Ni-Fe-based filler wires without boron and boron-doped (50 ppm wt% boron) were prepared for this study. Boron-doped weld metals exhibited longer rupture lives and lower steady creep rates during the creep rupture tests at 750 degrees C / 380 MPa and 750 degrees C / 210 MPa. This study explains the improvement mechanism of boron on creep resistance from the perspective of the effect of boron on M23C6. Boron increased the nucleation rate of M23C6 and participated in the formation of M-23(C, B)(6) type boron-carbides. After creep deformation, boron still existed stably in the M-23(C, B)(6). The higher density of discrete M23C6 particles due to boron addition could restrain grain boundary crack propagation and grain boundary sliding, and thereby improve the creep fracture resistance of the GH984G weld metal at 750 degrees C / (380/ 210 MPa).
引用
收藏
页数：12
相关论文
共 50 条
  • [21] Effect of hafnium micro-addition on precipitate microstructure and creep properties of a Fe-Ni-Al-Cr-Ti ferritic superalloy
    Baik, Sung-Il
    Rawlings, Michael J. S.
    Dunand, David C.
    [J]. ACTA MATERIALIA, 2018, 153 : 126 - 135
  • [22] Effect of Cr content on the microstructural stability and impact-toughness evolution of a Ni-Fe-based weld metal
    Wu, Dong
    Li, Dianzhong
    Lu, Shanping
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2018, 749 : 465 - 472
  • [23] Effect of carbon addition on the creep properties in a Ni-based single crystal superalloy
    Liu, LR
    Jin, T
    Zhao, NR
    Wang, ZH
    Sun, XF
    Guan, HR
    Hua, ZQ
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 385 (1-2): : 105 - 112
  • [24] A STUDY OF PRECIPITATES AND INSOLUBLES IN AN NI-FE-BASED SUPERALLOY BY ANALYTICAL ELECTRON-MICROSCOPY
    NAKKALIL, R
    RICHARDS, NL
    CHATURVEDI, MC
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1992, 157 (01): : 89 - 100
  • [25] Tensile properties and deformation mechanisms of a solution treated Ni-Fe-based alloy at high temperatures
    Xu, K.
    Jiang, H.
    Yan, J. B.
    Zhang, P.
    Liu, P.
    Cao, G. H.
    Yuan, Y.
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2023, 881
  • [26] Oxide-Scale Evolution on a New Ni-Fe-Based Superalloy at High Temperature
    Zhang, Huawei
    Yang, Zhi
    Wu, Zhaoyu
    Hong, Xiaoyu
    Li, Zhong
    Xu, Yulai
    Li, Jun
    Ni, Gaojin
    Xiao, Xueshan
    [J]. OXIDATION OF METALS, 2019, 92 (1-2): : 49 - 65
  • [27] Selective hydrogenation of unsaturated carbonyls by Ni-Fe-based alloy catalysts
    Putro, Wahyu S.
    Kojima, Takashi
    Hara, Takayoshi
    Ichikuni, Nobuyuki
    Shimazu, Shogo
    [J]. CATALYSIS SCIENCE & TECHNOLOGY, 2017, 7 (16) : 3637 - 3646
  • [28] Effects of Boron, Silicon on Structure and Properties of Fe-based Superalloy
    Wang, Haitao
    Yu, Huashun
    Wang, Yuqing
    [J]. MULTI-FUNCTIONAL MATERIALS AND STRUCTURES II, PTS 1 AND 2, 2009, 79-82 : 183 - +
  • [29] Synergistic Effects of Boron and Rare Earth Elements on the Microstructure and Stress Rupture Properties in a Ni-Based Superalloy
    Tian, Qiang
    Huang, Shuo
    Qin, Heyong
    Duan, Ran
    Wang, Chong
    Lian, Xintong
    [J]. MATERIALS, 2024, 17 (09)
  • [30] Tensile and Creep Deformation of a Newly Developed Ni-Fe-Based Superalloy for 700 °C Advanced Ultra-Supercritical Boiler Applications
    Yuan, Y.
    Zhong, Z. H.
    Yu, Z. S.
    Yin, H. F.
    Dang, Y. Y.
    Zhao, X. B.
    Yang, Z.
    Lu, J. T.
    Yan, J. B.
    Gu, Y.
    [J]. METALS AND MATERIALS INTERNATIONAL, 2015, 21 (04) : 659 - 665
12345