Crack nucleation and elastic / plastic deformation of TiAl alloys investigated by in-situ loaded atomic force microscopy

被引：20
|
作者：
Iqbal, F. [1 ]
Pyczak, F. [1 ]
Neumeier, S. [1 ]
Goeken, M. [1 ]
机构：
[1] Friedrich AlexanderUniv Erlangen Nurnberg FAU, Inst 1, Mat Sci & Engn, Erlangen, Germany
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2017年 / 689卷
关键词：
TiAl; Crack nucleation; In-situ observation; AFM; Elastic/plastic deformation; GAMMA-TITANIUM ALUMINIDES; PST-CRYSTALS; FRACTURE MECHANISMS; LAMELLAR; BEHAVIOR; MICROSTRUCTURE; PROPAGATION; SINGLE; GROWTH; TEM;
D O I：
10.1016/j.msea.2017.02.017
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The crack propagation mechanisms of gamma-titanium aluminides with fully lamellar microstructure have been studied using in-situ deformation in the Atomic Force Microscope (AFM). AFM demonstrated the unique capability to detect elastic as well as plastic deformation during in-situ tests from topography changes on the surface. It was found that the crack nucleation, which can occur at gamma/gamma and alpha 2/y interfaces as well as inside the gamma-phase, is always preceded by strong local elastic deformation. No cracking inside the alpha 2-phase was observed. The elastic and plastic deformation was confined inside the gamma-phase and especially pronounced near interfaces which can be explained by the differences of the elastic and plastic deformation behavior of the gamma-and alpha 2-phase.
引用
收藏
页码：11 / 16
页数：6
相关论文
共 50 条
  • [31] In situ observation of surface deformation of polymer films by atomic force microscopy
    Nishino, T
    Nozawa, A
    Kotera, M
    Nakamae, K
    REVIEW OF SCIENTIFIC INSTRUMENTS, 2000, 71 (05): : 2094 - 2096
  • [32] Use of in-situ atomic force microscopy to monitor the biodegradation of polyhydroxyalkanoates (PHAs)
    Rossini, CJ
    Arceo, JF
    McCarney, ER
    Augustine, BH
    MACROMOLECULAR SYMPOSIA, 2001, 167 : 139 - 151
  • [33] Acidic dissolution of plagioclase: In-situ observations by hydrothermal atomic force microscopy
    Jordan, G
    Higgins, SR
    Eggleston, CM
    Swapp, SM
    Janney, DE
    Knauss, KG
    GEOCHIMICA ET COSMOCHIMICA ACTA, 1999, 63 (19-20) : 3183 - 3191
  • [34] In-situ atomic force microscopy investigation of aerosols exposed to different humidities
    Köllensperger, G
    Friedbacher, G
    Kotzick, R
    Niessner, R
    Grasserbauer, M
    FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY, 1999, 364 (04): : 296 - 304
  • [35] In-situ atomic force microscopy study of lipid vesicles adsorbed on a substrate
    ShibataSeki, T
    Masai, J
    Tagawa, T
    Sorin, T
    Kondo, S
    THIN SOLID FILMS, 1996, 273 (1-2) : 297 - 303
  • [36] The mechanical properties of different lamellae and domains in PST-TiAl investigated with nanoindentations and atomic force microscopy
    Kempf, M.
    Göken, M.
    Vehoff, H.
    Materials Science and Engineering: A, 2002, 329-331 : 184 - 189
  • [37] Using atomic force microscopy for in-situ characterization of biological samples.
    FASEB JOURNAL, 1998, 12 (08): : A1488 - A1488
  • [38] In-situ atomic force microscopy of silicon(100) in aqueous potassium hydroxide
    Raisch, P
    Haiss, W
    Nichols, RJ
    Schiffrin, DJ
    ELECTROCHIMICA ACTA, 2000, 45 (28) : 4635 - 4643
  • [39] The mechanical properties of different lamellae and domains in PST-TiAl investigated with nanoindentations and atomic force microscopy
    Kempf, J
    Göken, M
    Vehoff, H
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2002, 329 : 184 - 189
  • [40] USE OF IN-SITU ATOMIC-FORCE MICROSCOPY TO IMAGE CORROSION AT INCLUSIONS
    RYNDERS, RM
    PAIK, CH
    KE, R
    ALKIRE, RC
    JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1994, 141 (06) : 1439 - 1445
12345