Short-term creep behavior of an additive manufactured non-weldable Nickel-base superalloy evaluated by slow strain rate testing
Sign Up to like & getrecommendations! Published in 2019 at "Acta Materialia"
DOI: 10.1016/j.actamat.2019.08.034
Abstract: Abstract Additive manufacturing (AM) of high γ′ strengthened Nickel-base superalloys, such as IN738LC, is of high interest for applications in hot section components for gas turbines. The creep property acts as the critical indicator of… read more here.
Keywords: grain; creep behavior; nickel base; strain ... See more keywords
Hot deformation characteristics and dislocation substructure evolution of a nickel-base alloy considering effects of δ phase
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Alloys and Compounds"
DOI: 10.1016/j.jallcom.2018.06.146
Abstract: Abstract The hot deformation characteristics of a nickel-base alloy with different contents of δ phase (Ni3Nb) were studied by isothermal compressive experiments. The experimental data and microstructural observation reveal that the hot compressive behavior and… read more here.
Keywords: phase; nickel base; hot deformation; dislocation ... See more keywords
Cyclic stress responses of a newly developed nickel-base superalloy at elevated temperatures
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Alloys and Compounds"
DOI: 10.1016/j.jallcom.2018.09.267
Abstract: Abstract Total strain-controlled low cycle fatigue tests were conducted on the newly designed nickel-base superalloy M951G under different testing conditions; the relationship among cyclic stress responses, microstructural degradations, deformation mechanisms and testing conditions has been… read more here.
Keywords: dislocation; cyclic stress; nickel base; strain ... See more keywords
Substructural evolution in a directionally solidified nickel-base superalloy during relaxation fatigue tests at 850 °C
Sign Up to like & getrecommendations! Published in 2018 at "Materials Letters"
DOI: 10.1016/j.matlet.2018.07.124
Abstract: Abstract This paper reports new dislocation configurations responsible for cyclic hardening/softening behaviour of a directionally solidified nickel base superalloy after relaxation fatigue tests at 850 °C with hold durations of 1 and 5 min. Dislocation interactions in… read more here.
Keywords: relaxation fatigue; nickel base; directionally solidified; superalloy relaxation ... See more keywords
In-situ neutron diffraction during stress relaxation of a single crystal nickel-base superalloy
Sign Up to like & getrecommendations! Published in 2017 at "Scripta Materialia"
DOI: 10.1016/j.scriptamat.2017.01.002
Abstract: Abstract The stress relaxation behaviour of a single crystal nickel-base superalloy has been quantified using time-of-flight neutron diffraction analysis for a range of temperatures relevant to casting. A new iterative analysis methodology is described to… read more here.
Keywords: nickel base; stress relaxation; relaxation; crystal nickel ... See more keywords
A topologized resolved shear stress method for the life prediction of nickel-base single crystal superalloys
Sign Up to like & getrecommendations! Published in 2020 at "Theoretical and Applied Fracture Mechanics"
DOI: 10.1016/j.tafmec.2020.102624
Abstract: Abstract Fifteen multiaxial critical-plane fatigue damage parameters of isotropic metal materials are applied to the life evaluation of nickel-base single crystal superalloys. These parameters are classified into stress-, strain- and strain-energy parameters, and their predictive… read more here.
Keywords: nickel base; resolved shear; single crystal; shear stress ... See more keywords
Analysis and experimental study of the cutting mechanism in machined nickel-base superalloys GH4169 with PCBN tools under high pressure cooling
Sign Up to like & getrecommendations! Published in 2018 at "Integrated Ferroelectrics"
DOI: 10.1080/10584587.2018.1456175
Abstract: ABSTRACT In view of the problem of superalloy difficult to be processed, high pressure cooling is used for machining. In this paper the chip breaking model is described and the cutting force characteristics is analyzed… read more here.
Keywords: nickel base; cutting mechanism; high pressure; pressure cooling ... See more keywords
Grain Refinement of a Powder Nickel-Base Superalloy Using Hot Deformation and Slow-Cooling
Sign Up to like & getrecommendations! Published in 2018 at "Materials"
DOI: 10.3390/ma11101978
Abstract: A pre-hot-deformation process was applied for a polycrystalline nickel-base superalloy to active deformation twins and dislocations, and subsequent slow cooling treatment was used to achieve grain refinement and microstructure homogenization. The microstructural evolution of the… read more here.
Keywords: nickel base; slow cooling; hot deformation; deformation ... See more keywords