Results 31 to 40 of about 2,116 (231)
Directionally solidified eutectic gamma-gamma nickel-base superalloys [PDF]
, 1977 A directionally solidified multivariant eutectic gamma-gamma prime nickel-base superalloy casting having improved high temperature properties was developed.
Jackson, M. R.
core +1 more source
Advanced Science, EarlyView.By adjusting Ga's doping in Cu–Sn alloy, an ultra‐high elongation of 100.8% is achieved in first time. Ga forms a stable solid solution structure and a stronger electron exchange with Cu. This enhances strength‐ductility synergistically by tuning SFE to balance twinning and slip.
Dazhuo Song +15 more
wiley +1 more source
Microstructure evolution of creep damaged DZ411 superalloy during rejuvenation heat treatment
Journal of Aeronautical Materials, 2019 The simple solution and aging treatment processes were adopted to rejuvenate the microstructure of creep damaged DZ411 superalloy. The microstructure evolution of superalloy during rejuvenation process was investigated by OM and SEM, and then the ...
TANG Wenshu +5 more
doaj +1 more source
Journal of Aeronautical Materials, 2020 The effect of casting temperature and withdrawal rate on the interfacial reaction between DZ22B nickel-base superalloy and high-purity Al2O3 ceramic shell facecoat material was studied by changing the parameters of directional solidification process.The ...
LIU Yantao, LIU Manping, SUN Shaochun
doaj +1 more source
Advanced Science, EarlyView.This study demonstrates that in high‐alloy systems, nanoclusters with high solute tolerance can effectively suppress compositional segregation. This mitigation leads to a concurrent 18.7% increase in strength and 41.5% improvement in ductility, which is attributed to a shear‐bypass synergistic strengthening mechanism. The findings provide a new pathway
Wei Yu +10 more
wiley +1 more source
Nonlinear ultrasonic characterization of γ΄ phase evolution in DZ411 alloy after long-term aging
Cailiao gongchengTo explore the feasibility of the nonlinear ultrasonic method in the aging microstructure evolution application of directionally solidified nickel-based superalloy， DZ411 directionally solidified nickel-based superalloy is studied.The microstructure ...
YANG Gangzhengliang +3 more
doaj +1 more source
Deformation‐Induced Formation of Stray Grains in Additive Manufacturing of Single Crystals
Advanced Science, EarlyView.Stray grain formation severely limits the additive manufacturing of single‐crystal alloys. By integrating in situ synchrotron techniques, ex situ characterization, and multi‐scale multi‐physics modeling, the authors reveal that stray grains originate from dislocations at the solid‐liquid interface, rather than thermal supercooling in conventional ...
Dongsheng Zhang +11 more
wiley +1 more source
Journal of Materials Research and TechnologyThis work investigates the effect of cyclic creep on the long-term oxidation of a directionally-solidified nickel-based superalloy DZ445 up to 1800 h. The stress application of cyclic creep refines the oxides, increases the oxidation weight gain, reduces
Congjiang Zhang +10 more
doaj +1 more source
Effects of Hold Time on the Elevated Temperature Fatigue Crack Growth Behavior of Alloy 247LC‐DS
Fatigue &Fracture of Engineering Materials &Structures, EarlyView.ABSTRACT Creep–fatigue crack growth (CFCG) experiments were performed at 850°C and 950°C on nominally 12.70‐mm‐thick compact‐type specimens of alloy 247LC‐DS, a Ni‐base superalloy. The loading cycles consisted of trapezoidal waveforms with hold times of 2 and 20 min at the maximum force.
Zachary B. Towner +5 more
wiley +1 more source
Selective Laser Melting of Non-Weldable Nickel Superalloy: Microstructure, Cracks and Texture
Metals, 2023 Additive manufacturing, particularly selective laser melting, presents exciting possibilities for fabricating components from high-temperature nickel-based superalloys.
Kirill Starikov +7 more
doaj +1 more source