On the tensile creep behaviour of a directionally-solidified Ni3Al-based alloy
نویسندگان
چکیده
منابع مشابه
Modeling the Temperature-dependence of Tertiary Creep Damage of a Directionally Solidified Ni-base Superalloy
Directionally solidified (DS) Ni-base superalloys have become a commonly used material in gas turbine components. Controlled solidification during the material manufacturing process leads to a special alignment of the grain boundaries within the material. This alignment results in different material properties dependent on the orientation of the material. When used in gas turbine applications t...
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For the first time, poly(4-methyl-1-pentene) (PMP) nanocomposites were prepared by melt compounding 2 vol% of fumed silica nanoparticles, in order to study the role of the nanofiller surface area and functionalization on the tensile mechanical response of the material, with particular focus on its creep behaviour. The high optical transparency of the polymer matrix was substantially preserved i...
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 ...
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Formation of stray grain defects particularly around re-entrant features of the turbine blade airfoils is one of the major problems in directional and single crystal solidification processes. In this work, directional solidification tests of the GTD-111 Ni-based superalloy were conducted at different withdrawal velocities of 3, 6 and 9 mm.min-1 using various stepped cylindrical and cubic design...
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...
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ژورنال
عنوان ژورنال: Bulletin of Materials Science
سال: 1993
ISSN: 0250-4707,0973-7669
DOI: 10.1007/bf02745309