Microstructural stability of long-term aged wrought Ni-Fe-based superalloys

被引：12
|
作者：
Zhao, Xinbao [1 ]
Dang, Yingying [1 ]
Yin, Hongfei [1 ]
Yuan, Yong [1 ]
Lu, Jintao [1 ]
Yang, Zhen [1 ]
Yan, Jingbo [1 ]
Gu, Yuefeng [1 ]
机构：
[1] Xian Thermal Power Res Inst Co Ltd, Xian 710032, Peoples R China
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2017年 / 33卷 / 10期
关键词：
Ni-Fe-based superalloys; thermal exposure; coarsening; microstructure; microhardness; MECHANICAL-PROPERTIES; THERMAL EXPOSURE; ALLOY; 617; PRECIPITATION; EVOLUTION; BEHAVIOR; PHASE; EMBRITTLEMENT; KINETICS; BOILERS;
D O I：
10.1080/02670836.2017.1282668
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The influence of long-term thermal exposure on the microstructure and microhardness of a new Ni-Fe-based superalloy, for advanced ultra-supercritical coal-fired power plants, was studied. Spherical gamma' particles were coarsened with the increase of aging time, while the volume fraction of gamma' was decreased. The amount of M23C6 carbides was increased with aging time at 750 degrees C, and the coarsening rate of the width of M23C6 was consistent with that of the LSW model. The microhardness of the alloy was maintained following 935h of aging time and then was slightly decreased. It was found that the transition from the strongly coupled dislocations model to the Orowan model was dependent on the size and volume fraction of gamma'.
引用
收藏
页码：1252 / 1257
页数：6
相关论文
共 50 条
  • [31] Coarsening behavior of γ′ precipitates of single crystal Ni-based superalloys during long-term exposure
    Pan, Yanming
    Zhang, Longfei
    Huang, Zaiwang
    Jiang, Liang
    [J]. MATERIALS LETTERS, 2019, 241 : 210 - 213
  • [32] Microstructural characterization of the η-Ni3(Ti, Al) phase in a long-term-aged Ni-based superalloy
    Hu, X. B.
    Guo, X. W.
    Wang, Y. J.
    Hou, J. S.
    Qin, X. Z.
    Zhou, L. Z.
    Liu, J. F.
    Ma, X. L.
    [J]. PHILOSOPHICAL MAGAZINE LETTERS, 2017, 97 (11) : 442 - 449
  • [33] Effect of Co on microstructural stability of the third generation Ni-based single crystal superalloys
    Bo Wang
    Jun Zhang
    Taiwen Huang
    Wenchao Yang
    Haijun Su
    Zhuoran Li
    Lin Liu
    Hengzhi Fu
    [J]. Journal of Materials Research, 2016, 31 : 1328 - 1337
  • [34] Effects of (W+Mo)/Cr ratio on microstructural evolutions and mechanical properties of cast Ni-based superalloys during long-term thermal exposure
    University of Science and Technology of China, Hefei
    230022, China
    不详
    110016, China
    [J]. Jinshu Xuebao, 1 (67-76):
  • [35] Effects of W on Microstructural Stability of the Third Generation Ni-Based Single Crystal Superalloys
    Wang Bo
    Zhang Jun
    Pan Xuejiao
    Huang Taiwen
    Liu Lin
    Fu Hengzhi
    [J]. ACTA METALLURGICA SINICA, 2017, 53 (03) : 298 - 306
  • [36] EFFECTS OF (W plus Mo)/Cr RATIO ON MICROSTRUCTURAL EVOLUTIONS AND MECHANICAL PROPERTIES OF CAST Ni-BASED SUPERALLOYS DURING LONG-TERM THERMAL EXPOSURE
    Sun Wen
    Qin Xuezhi
    Guo Jianting
    Lou Langhong
    Zhou Lanzhang
    [J]. ACTA METALLURGICA SINICA, 2015, 51 (01) : 67 - 76
  • [37] Effect of Co on microstructural stability of the third generation Ni-based single crystal superalloys
    Wang, Bo
    Zhang, Jun
    Huang, Taiwen
    Yang, Wenchao
    Su, Haijun
    Li, Zhuoran
    Liu, Lin
    Fu, Hengzhi
    [J]. JOURNAL OF MATERIALS RESEARCH, 2016, 31 (09) : 1328 - 1337
  • [38] Effect of Cr and Ni/Fe Ratio on the Microstructure and Mechanical Properties of γ′-Strengthened Ni-Fe-Based Alloys
    Liu, Zhuo
    Tin, Sammy
    [J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2023, 54 (03): : 838 - 853
  • [39] Evolution of Precipitates in Ni-based Wrought Superalloys During Hot Working
    Zhang, Wei
    Chen, Zishuai
    Dong, Ruifeng
    Li, Jian
    Zhou, Xing
    Ma, Tianjun
    Qu, Jinglong
    Wang, Qingzeng
    Gu, Yu
    [J]. Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering, 2023, 52 (09): : 3170 - 3178
  • [40] Investigation of microstructural stability and tensile deformation behavior of a novel PM Ni-based superalloy during long-term thermal exposure
    Zhu, Lihua
    Pan, Hao
    Wei, Bing
    Xiao, Lei
    Guo, Jianzheng
    Ji, Hongjun
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2024, 899
12345