Results 21 to 30 of about 24,153,524 (223)
Crack initiation in a Ni-base superalloy [PDF]
Scripta Metallurgica, 1987 Oxide d ispers ion s t r e n g t h e n i n g (ODS) has been success fu l ly combined with -f' precipi ta t ion ha rden ing in the superal loy MA 6000. The development of MA 6000 is s t rong ly connected with new process ing techniques . The direct ional solidification process is used to produce columnar grains whereas ODS is a product of powder ...
INTVELD, AJH +2 more
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Segregation-Assisted Plasticity in Ni-Based Superalloys [PDF]
Metallurgical and Materials Transactions A, 2018 Abstract Correlative high-resolution transmission electron microscopy and energy-dispersive X-ray spectroscopy are used to study deformation-induced planar faults in the single-crystal superalloy MD2 crept at 800 °C and 650 MPa. Segregation of Cr and Co at microtwins, anti-phase boundaries (APB), and complex/superlattice extrinsic and ...
Barba Cancho, D +4 more
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Slip analysis in a Ni-base superalloy [PDF]
Acta Materialia, 2005 A Ni-base superalloy single crystal with Gamma/Gamma' structure was tested at room temperature along the , and directions. Consistent with previously reported investigations, this alloy did not obey the Schmid law and the CRSS (critical resolved shear stress) was noticeably lower for the -oriented samples.
Materials Science and Engineering Department, University of Florida, P.O. Box 116400, Gainesville, FL 32611, USA ( host institution ) +3 more
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Probing single crystal orientation by X-ray diffraction for nickel-based superalloys
Results in Physics, 2021 The deviation angles of Ni-based single crystal superalloys are investigated by two techniques of rotating orientation X-ray diffraction (RO-XRD) and back-reflection Laue X-ray diffraction (BRL-XRD).
Yumin Wang +3 more
doaj +1 more source
Effects of microstructure on room temperature fatigue crack initiation and short crack propagation in Udimet 720Li Ni-base superalloy [PDF]
, 2008 An assessment of the effects of microstructure on room temperature fatigue crack initiation and short crack propagation in a Ni-base superalloy is presented.
Pang, H.T., Reed, P.A.S.
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Journal of Materials Research and Technology, 2020 A new Ni-Co-based superalloy was prepared through electron beam smelting (hereinafter referred to as EBS Ni-Co superalloy). The microstructure and element distribution of the superalloy were characterized through optical microscopy (OM), scanning ...
Xinpeng Zhuang +5 more
doaj +1 more source
An investigation into cracking in nickel-base superalloy repair welds [PDF]
, 2010 The nickel-base superalloy Rene 80 is considered very susceptible to liquation and strain-age cracking. Material in the solutionised condition is welded using the Cold Metal Transfer, or CMT process (with ductile filler alloy) and autogenously using a
Colegrove, Paul A. +7 more
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Liquation and post-weld heat treatment cracking in Rene 80 laser repair welds [PDF]
, 2012 An extensive experimental study on a nickel-based superalloy, Rene 80 using autogenous laser welding has been undertaken to determine the effect of the process parameters and weld bead geometry on cracking in the as-welded and post- weld heat treated ...
Colegrove, Paul A. +7 more
core +1 more source
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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Influence of coating on the thermal resistance of a Ni-Based superalloy [PDF]
, 2006 In this paper, the influence of M-CrAlY polycrystalline coating on the thermal fatigue behavior of a Nickel-base superalloy has been investigated. A special device using a rotating bending machine and two thermal sources has been used to perform thermo ...
Stephan, Nicolas +2 more
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