Formation Mechanism of Lamellar M23C6 Carbide in a Cobalt-Base Superalloy During Thermal Exposure at 1000 °C

被引：8
作者：
Gui, Wei-Min [1 ,2 ]
Zhang, Hong-Yu [1 ]
Long, Hai-Bo [3 ]
Jin, Tao [1 ]
Sun, Xiao-Feng [1 ]
Zheng, Qi [1 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, Superalloys Div, Shenyang 110016, Liaoning, Peoples R China
[2] Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China
[3] Beijing Univ Technol, Inst Microstruct & Property Adv Mat, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
来源：
ACTA METALLURGICA SINICA-ENGLISH LETTERS | 2018年 / 31卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Cobalt-base superalloy; Carbide precipitation; Thermal exposure; Scanning/transmission electron microscopy; PRECIPITATION BEHAVIOR; ALLOY; MICROSTRUCTURE;
D O I：
10.1007/s40195-017-0596-1
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The precipitation of the lamellar-shaped M23C6 carbide within the dendritic matrix of a cobalt-base superalloy during thermal exposure at 1000 degrees C has been investigated. Such a precipitation is not commonly observed in cobalt-base superalloys. It is found that M23C6 particles nucleate preferentially at stacking faults (SFs) in the dendritic matrix and grow along the SFs to develop a lamellar character. Additionally, a Cr depletion zone is observed in the vicinity of the lamellar M23C6 carbide, which strongly supports the presence of Suzuki segregation.
引用
收藏
页码：27 / 32
页数：6
相关论文
共 25 条
  • [1] ROLE OF DISLOCATIONS IN PRECIPITATION OF M23C6 IN CO-CR-C ALLOYS
    BEAVEN, PA
    SWANN, PR
    WEST, DRF
    [J]. JOURNAL OF MATERIALS SCIENCE, 1978, 13 (04) : 691 - 701
  • [2] DRAPIER JM, 1968, COBALT, V41, P199
  • [3] The investigation of carbides evolution in a cobalt-base superalloy at elevated temperature
    Gui, Weimin
    Zhang, Hongyu
    Yang, Min
    Jin, Tao
    Sun, Xiaofeng
    Zheng, Qi
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2017, 695 : 1271 - 1278
  • [4] Aging Precipitation Behavior and Mechanical Properties of Inconel 617 Superalloy
    Guo, Yan
    Wang, Bohan
    Hou, Shufang
    [J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS, 2013, 26 (03) : 307 - 312
  • [5] EFFECT OF HEAT-TREATMENT ON PRECIPITATION BEHAVIOR AND HIGH-TEMPERATURE STRENGTH IN A WROUGHT CO-BASE SUPERALLOY
    IIZUKA, H
    TANAKA, M
    [J]. JOURNAL OF MATERIALS SCIENCE, 1986, 21 (08) : 2803 - 2811
  • [6] Jiang Wenhui, 1998, Acta Metallurgica Sinica, V34, P1289
  • [7] Secondary carbide precipitation in a directionally solidified cobalt-base superalloy
    Jiang, WH
    Yao, XD
    Guan, HR
    Hu, ZQ
    [J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1999, 30 (03): : 513 - 520
  • [8] JIANG WH, 1999, ACTA METALL SIN, V12, P155
  • [9] Formation of M23C6-type precipitates and chromium-depleted zones in austenite stainless steel
    Kaneko, Kenji
    Fukunaga, Tatsuya
    Yamada, Kazuhiro
    Nakada, Nobuo
    Kikuchi, Masao
    Saghi, Zineb
    Barnard, Jon S.
    Midgley, Paul A.
    [J]. SCRIPTA MATERIALIA, 2011, 65 (06) : 509 - 512
  • [10] Suzuki segregation in Co-Ni-based superalloy at 973 K: An experimental and computational study by phase-field simulation
    Koizumi, Yuichiro
    Nukaya, Takeshi
    Suzuki, Sho
    Kurosu, Shingo
    Li, Yunping
    Matsumoto, Hiroaki
    Sato, Kazuhisa
    Tanaka, Yuji
    Chiba, Akihiko
    [J]. ACTA MATERIALIA, 2012, 60 (6-7) : 2901 - 2915
123