Results 81 to 90 of about 15,457 (271)
The continuing battle against defects in nickel-base superalloys [PDF]
In the six decades since the identification of age hardenable nickel-base superalloys their compositions and microstructures have changed markedly. Current alloys are tailored for specific applications.
Dreshfield, R. L.
core +1 more source
Lifetime Prediction of Single Crystal Nickel-Based Superalloys
Applied SciencesSingle crystal nickel-based superalloys are extensively used in turbine blade applications due to their superior creep resistance compared to their polycrystalline counterparts. With the high creep resistance, high cycle fatigue (HCF) and low cycle fatigue (LCF) become primary failure mechanisms for such applications.
Kasar, Ç +3 more
openaire +3 more sources
Materials Research LettersThe occurrence of recrystallization will greatly decrease the service life of superalloy blades. The dynamic recrystallization of a Ni-based single crystal superalloy under supergravity stress and high temperature was studied. When tested at 950 °C, only
Wenshuai Wang +8 more
doaj +1 more source
Cailiao gongcheng, 2019 Two bicrystal specimens containing high angle grain boundary (about 20 degrees) were prepared by seed crystal method. The effect of Hf on the as-cast, heat-treated grain boundary microstructure, composition and stress rupture properties under 1100 ...
ZHAO Yun-song +8 more
doaj +1 more source
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
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Microstructural stability and lattice misfit characterization of nimonic 263 [PDF]
, 2012 Nimonic 263 has been selected as a candidate header/piping material of advanced ultra-supercritical (A-USC) boilers for the next generation of fossil fuel power plant.
Barnard, Pete +3 more
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Controlling crystal orientation of Ni-based single crystal superalloy by inclined seeding method
Cailiao gongchengAn inclined seeding method for Ni-based single crystal superalloy with a specific orientation is presented. The evolution of solidification microstructure and its mechanism are studied during the preparation of single crystals by this method through ...
YANG Shuai +6 more
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Effect of C Content on Microstructure of Second Generation Single Crystal Superalloy
Journal of Aeronautical Materials, 2017 The single crystal superalloy with different C contents was casted using master alloy of DD6 in the directionally solidified furnace. The effect of C content on the microstructure of the second generation single crystal superalloy was investigated.
LIU Shizhong, SHI Zhenxue, LI Jiarong
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Ni–W diffusion barrier: Its influence on the oxidation behaviour of a β-(Ni,Pt)Al coated fourth generation nickel-base superalloy [PDF]
, 2009 A Ni–W base diffusion barrier (DB) has been developed to limit interdiffusion between a fourth generation Ni-base superalloy (MCNG) and a Pt-modified nickel aluminide bondcoat. After long term oxidation, the DB layer permits to reduce the Al depletion in
Bacos, Marie-Pierre +5 more
core +2 more sources