μ Phase in a Nickel Base Directionally Solidified Alloy
نویسندگان
چکیده
منابع مشابه
Thermomechanical Fatigue Behavior of a Directionally Solidified Ni-Base Superalloy
A continuum crystal plasticity model is used to simulate the material behavior of a directionally solidified Ni-base superalloy, DS GTD-111, in the longitudinal and transverse orientations. Isothermal uniaxial fatigue tests with hold times and creep tests are conducted at temperatures ranging from room temperature (RT) to 1038°C to characterize the deformation response. The constitutive model i...
متن کاملFatigue-creep-environment Interactions in a Directionally-solidified Ni-base Superalloy
Directionally-solidified (DS) GTD-111 is a Ni-base superalloy designed to withstand damage occurring in the first and second stage blades of gas-powered turbines. Because of the distinctive microstructure of this material, the manner in which fatiguecreep-environment damage mechanisms interact to initiate cracks is sensitive to grain structure and chemical composition. Along with fatigue cyclin...
متن کاملA Thermomechanical Fatigue Crack Initiation Model for Directionally-solidified Ni-base Superalloys
Nickel-base superalloys have been used extensively in power generation applications due to their high strength at temperatures up to 1093°C. When the material is subjected to complex mechanical loading superimposed with thermal loading, fatigue interacts with either creep and/or oxidation. Directionallysolidified (DS) materials are often used in place of polycrystalline (PC) materials since the...
متن کاملSimulation of Creep Crack Growth of a Directionally-solidified Ni-base Superalloy
Creep lifetime of turbine blade material subjected to sustained centrifugal forces at elevated temperatures is limited by accumulated inelastic deformation and creep crack growth (CCG). Creep resistance exhibited in conventionally cast polycrystalline (PC) Ni-base superalloy components has been enhanced via solidification techniques. Directional solidification (DS) results in large grain sizes ...
متن کاملVery High Cycle Fatigue Behavior of a Directionally Solidified Ni-Base Superalloy DZ4
The effect of casting pores on the very high cycle fatigue (VHCF) behavior of a directionally solidified (DS) Ni-base superalloy DZ4 is investigated. Casting and hot isostatic pressing (HIP) specimens were subjected to very high cycle fatigue loading in an ambient atmosphere. The results demonstrated that the continuously descending S-N curves were exhibited for both the casting and HIP specime...
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ژورنال
عنوان ژورنال: MATERIALS TRANSACTIONS
سال: 2005
ISSN: 1345-9678,1347-5320
DOI: 10.2320/matertrans.46.54