منابع مشابه
Modelling plastic deformation in a single-crystal nickel-based superalloy using discrete dislocation dynamics
Background: Nickel-based superalloys are usually exposed to high static or cyclic loads in non-ambient environment, so a reliable prediction of their mechanical properties, especially plastic deformation, at elevated temperature is essential for improved damage-tolerance assessment of components. Methods: In this paper, plastic deformation in a single-crystal nickel-based superalloy CMSX4 at el...
متن کاملEffect of Thermal History on Microstructural Changes in Aluminized Nickel-Based Single-Crystal Superalloy
The effect of the thermal history on microstructural changes in aluminized and Pt-aluminized Ni-based single-crystal superalloys was investigated. The superalloy substrates were first electropolished to get rid of the residual surface strain. Then, Pt was electrodeposited and vacuum annealing was conducted for some of the substrates, and aluminized and Pt-aluminized specimens were prepared usin...
متن کاملPreferred growth orientation and microsegregation behaviors of eutectic in a nickel-based single-crystal superalloy
A nickel-based single-crystal superalloy was employed to investigate the preferred growth orientation behavior of the (γ + γ') eutectic and the effect of these orientations on the segregation behavior. A novel solidification model for the eutectic island was proposed. At the beginning of the eutectic island's crystallization, the core directly formed from the liquid by the eutectic reaction, an...
متن کاملCrystal plasticity and crack initiation in a single-crystal nickel-base superalloy Modelling, evaluation and applications
In this dissertation the work done in the projects KME-410/502 will be presented. The overall objective in these projects is to evaluate and develop tools for designing against fatigue in single-crystal nickel-base superalloys in gas turbines. Experiments have been done on single-crystal nickel-base superalloy specimens in order to investigate the mechanical and fatigue behaviour of the materia...
متن کاملJoining of nickel-base superalloy single crystals
Introduction ................................................................................................................................1 Overview of Weldability of Nickel-Base Superalloys..................................................................1 Crystallography............................................................................................................................
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ژورنال
عنوان ژورنال: SCIENTIA SINICA Technologica
سال: 2015
ISSN: 1674-7259
DOI: 10.1360/n092015-00173