Dynamic recrystallization mechanisms and twining evolution during hot deformation of Inconel 718 [PDF]
, 2016 The hot deformation behavior of an IN718 superalloy was studied by isothermal compression tests under the deformation temperature range of 950–1100 °C and strain rate range of 0.001–1 s-1 up to true strains of 0.05, 0.2, 0.4 and 0.7.
Aghaie-Khafri, M. +3 more
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Stress corrosion of Ni-based superalloys [PDF]
Materials at High Temperatures, 2017 AbstractThe development of gas turbines to increase fuel efficiency is resulting in progressively higher operating temperatures in the under platform regions of the blades. These regions have traditionally been considered low risk areas. However, higher metal temperatures combined with stresses and the deposition of contaminants from the cooling air ...
Brooking, Laurie +3 more
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On the origin of mosaicity in directionally solidified Ni-base superalloys [PDF]
Acta Materialia, 2021 This article addresses the formation of low angle grain boundaries which give rise to mosaicity, a phenomenon which has only recently received attention in the single crystal Ni-base superalloy field. In this work, post-mortem advanced microscopy characterisation techniques are employed to deduce the dendrite tip growth kinetics from transverse ...
Joel Strickland +8 more
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Thermal cycling behavior of EBPVD TBC systems deposited on doped Pt-rich γ–γ′ bond coatings made by Spark Plasma Sintering (SPS) [PDF]
, 2011 In the last decade, an increasing interest was given to Pt-rich γ–γ′ alloys and coatings as they have shown good oxidation and corrosion properties. In our previous work, Spark Plasma Sintering (SPS) has been proved to be a fast and efficient tool to ...
Boidot, Mathieu +5 more
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Microstructural aspects of fatigue in Ni-base superalloys [PDF]
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2015 Nickel-base superalloys are primarily used as components in jet engines and land-based turbines. While compositionally complex, they are microstructurally simple, consisting of small (50–1000 nm diameter), ordered, coherent Ni3(Al,Ti)-type L12or Ni3Nb-type DO22precipitates (calledγ′andγ′′, respectively) embedded in an FCC substitutional solid solution ...
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Advanced burner-rig test for oxidation-corrosion resistance evaluation of MCrAlY/superalloys systems [PDF]
, 2006 Protective coatings are used on gas turbine components to enable them to survive in engine-operating conditions. This study presents a recently developed cyclic burner-rig test that is used to simulate helicopter engine conditions and to assess the ...
Andrieu, Eric +3 more
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Oxygen changes crack modes of Ni-based single crystal superalloy
Materials Research Letters, 2021 Oxygen-affected cracking commonly presents on thin Ni-based single crystal superalloy components serving in high temperature and oxidizing environments.
Xueqiao Li +15 more
doaj +1 more source
Effect of modification by Pt and manufacturing processes on the microstructure of two NiCoCrAlYTa bond coatings intended for thermal barrier system applications [PDF]
, 2010 Few studies have already shown that Pt influences the diffusion of aluminium and therefore the microstructure of β-NiAl or γ-Ni/γ′-Ni3Al materials. Besides, several works have revealed that the addition of Pt to MCrAlY (M = Ni and/or Co) improves the ...
Lafont, Marie-Christine +4 more
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Mechanisms of High Temperature Degradation of Thermal Barrier Coatings. [PDF]
, 2009 Thermal barrier coatings (TBCs) are crucial for increasing the turbine inlet temperature (and hence efficiency) of gas turbine engines. The thesis describes PhD research aimed at improving understanding of the thermal cycling failure mechanisms of ...
Wu, Rudder T.C., Wu, Rudder T.C.
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Atomic-scale grain boundary engineering to overcome hot-cracking in additively-manufactured superalloys [PDF]
, 2019 There are still debates regarding the mechanisms that lead to hot cracking in parts build by additive manufacturing (AM) of non-weldable Ni-based superalloys.
Abed, Stéphane +11 more
core +2 more sources