Dislocation microstructures of single crystal ⟨001⟩ CMSX-4 specimens tensile tested at 700 and 1000°C
-
Florian Schubert
,
Heinz-Josef Penkalla
Abstract
Two principal methods are used to derive constitutive equations for single crystal Ni-base superalloys: development of a creep potential according the Hill’s theory and the summarization of all activated slip systems: theoretically, the octahedral and the cubic slip system must be considered. An overview of dislocation structure evolution has been performed using transmission electron microscopy (TEM) techniques on 〈001〉-orientated CMSX-4 specimens after tensile tests. The aim of the applied conventional TEM methods was to provide with more details about the influence of temperature and deformation rate on the deformation behaviour of CMSX-4 nickel-base single crystal. A correlation of the γ' phase deformation mechanisms and associated mechanical responses for different tensile testing conditions has been done. With TEM methods the dislocation dipole identification as well as the stacking fault nature has been demonstrated.
Dedicated to Professor Dr. Otmar Vöhringer on the occasion of his 65th birthday
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© 2003 Carl Hanser Verlag, München
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- Notifications/Mitteilungen
- Personal/Personelles
- Books/Bücher
- Conferences/Konferenzen
Articles in the same Issue
- Frontmatter
- Articles/Aufsätze
- Bedeutung von Eigenspannungsabbau und mikrostrukturellen Veränderungen für die Lebensdauervorhersage schwingbeanspruchter Schweißverbindungen
- Factors affecting cyclic lifetime of EB-PVD thermal barrier coatings with various bond coats
- Depth-resolved X-ray residual stress analysis in PVD (Ti, Cr) N hard coatings
- Crystal orientation and residual stress in TiN film by synchrotron radiation
- Characterization of thermal and anodic oxide layers on β- and on near-β-titanium alloys for biomedical application
- Micromechanisms and modelling of crack initiation and growth in tool steels: role of primary carbides
- Fatigue crack nucleation at grain boundaries – experiment and simulation
- Fatigue and fracture-induced defect structures of metals investigated by positron microscopy
- Deformation and fracture of Nb/α-Al2O3 composites in compression and bending studied by optical methods
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- Influence of mechanical surface treatments on the HCF performance of the Ni-superalloy Udimet 720 LI
- Precipitation of β-phase and twinning during deformation of Mg–Al alloy AZ91 at 150 °C after solution treatment
- Nanograin size, high-nitrogen austenitic stainless steels
- Der dynamische SD-Effekt und der Einfluss auf die Fließortkurve
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- Mean stress sensitivity of sintered iron and steel
- Thermozyklisches Kriechen einer kurzfaserverstärkten Aluminium-Kolbenlegierung
- Strength and ductility of thin Cu wires
- Modeling of deformation behavior of copper under equal channel angular pressing
- Reaktionssintern von AlMg–MgO zur Herstellung von Bauteilen auf Spinellbasis
- Determination of the local oxygen distribution in a commercial titanium alloy by 3-dimensional atom probe
- Phase diagram of the Al–Cu–Fe quasicrystal-forming alloy system
- Notifications/Mitteilungen
- Personal/Personelles
- Books/Bücher
- Conferences/Konferenzen
