Anisotropic thermomechanical fatigue of a nickel-base single-crystal superalloy Part I: Effects of crystal orientations and damage mechanisms

被引：33
作者：
Luo, Cheng [1 ]
Yuan, Huang [1 ,2 ]
机构：
[1] Tsinghua Univ, Sch Aerosp Engn, Beijing, Peoples R China
[2] Tsinghua Univ, Inst Aero Engines, Beijing, Peoples R China
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2023年 / 168卷
关键词：
Thermomechanical fatigue; Damage mechanism; Fatigue-creep-oxidation; Crystal orientation; LOW-CYCLE FATIGUE; CRACK INITIATION; BEHAVIOR; TEMPERATURE; DEFORMATION; OXIDATION; CREEP;
D O I：
10.1016/j.ijfatigue.2022.107438
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Thermomechanical fatigue in distinct crystal orientations of nickel-base single-crystal superalloy was studied. Crack initiation modes and damage mechanisms were characterized on fracture surfaces and longitudinal sections by scanning electron microscope and optical microscope. Creep damage nucleated from casting pores in IP-TMF and propagated under mode I. The creep facets were controlled by the activated slip systems, whereas fatigue damage was orientation-dependent and developed by slipping along different crystallographic planes. Oxidation-assisted cracking in OP-TMF tests was non-crystallographic for all crystal orientations. Multi -layer structures near the crack tip revealed successive growth of oxide and the crack grew within the oxidized material.
引用
收藏
页数：16
相关论文
共 48 条
  • [1] Mechanism-based life model for out-of-phase thermomechanical fatigue in single crystal Ni-base superalloys
    Amaro, R. L.
    Antolovich, S. D.
    Neu, R. W.
    [J]. FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES, 2012, 35 (07) : 658 - 671
  • [2] Amaro RL, 2012, SUPERALLOYS 2012, P481
  • [3] [Anonymous], 2010, E236810 ASTM, DOI [10.1520/E2368-10, DOI 10.1520/E2368-10]
  • [4] On the Development of Physically Based Life Prediction Models in the Thermo Mechanical Fatigue of Ni-base Superalloys
    Antolovich, Stephen D.
    Amaro, Robert L.
    Neu, Richard W.
    Staroselsky, Alexander
    [J]. MATERIALS STRUCTURE & MICROMECHANICS OF FRACTURE, 2011, 465 : 47 - +
  • [5] Temperature gradients in TMF specimens. Measurement and influence on TMF life
    Brendel, T.
    Affeldt, E.
    Hammer, J.
    Rummel, C.
    [J]. INTERNATIONAL JOURNAL OF FATIGUE, 2008, 30 (02) : 234 - 240
  • [6] Cheng R, 2019, MAT MANUAL AERO ENGI
  • [7] Life modeling of anisotropic fatigue behavior for a single crystal nickel-base superalloy
    Dong, Chengli
    Yu, Huichen
    Li, Ying
    Yang, Xiaoguang
    Shi, Duoqi
    [J]. INTERNATIONAL JOURNAL OF FATIGUE, 2014, 61 : 21 - 27
  • [8] Creep damage of single-crystal nickel base superalloys: mechanisms and effect on low cycle fatigue
    Epishin, Alexander
    Link, Thomas
    Klingelhoeffer, Hellmuth
    Fedelich, Bernard
    Portella, Pedro
    [J]. MATERIALS AT HIGH TEMPERATURES, 2010, 27 (01) : 53 - 59
  • [9] A mechanism governing oxidation-assisted low-cycle fatigue of superalloys
    Evans, A. G.
    He, M. Y.
    Suzuki, A.
    Gigliotti, M.
    Hazel, B.
    Pollock, T. M.
    [J]. ACTA MATERIALIA, 2009, 57 (10) : 2969 - 2983
  • [10] A microstructural rafting state-based constitutive model for single crystal Ni-based superalloys at elevated temperature
    Fan, Y. S.
    Tan, L.
    Yang, X. G.
    Shi, D. Q.
    Li, R. Z.
    Huang, J.
    Wang, C.
    [J]. INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 2022, 228
12345