nickel base superalloy
Effect of Hot Isostatic Pressing on Microstructure and Mechanical Properties of CM 681LC Nickel Base Superalloy Using Microcast
... CM-681LC superalloy is a nickel-base superalloy devel- oped in recent ...This superalloy exhibits superior mechanical properties, and is particularly useful in high- temperature, ...
9
Fatigue Behavior and Life Prediction Model of a Nickel Base Superalloy under Different Strain Conditions
... a nickel-base superalloy was investigated under total strain-controlled mode at high ...the superalloy were investigated under isothermal low cycle fatigue (LCF) ...The superalloy ...
8
Submicron Structure of Rhenium Base Diffusion Barrier Coating Layer on a Nickel Base Superalloy
... To elucidate formation mechanisms of a Re-based alloy as a diffusion barrier layer on the Ni-based single-crystal superalloy TMS-82+, the structural characterizations was carried out using EPMA, FE-SEM and EBSD. ...
5
Impact of forging direction on the recrystallization behaviour of nickel base superalloy AD730 billet material at subsolvus temperatures
... Nickel superalloys are used to manufacture high temperature rotary engine parts such as high pressure disks in gas turbine engines. In this application high strength at high operating temperatures is required due ...
33
Influence of Rhenium on the Grain Boundary Strength, Phase Evolution, and High Temperature Mechanical Properties of a Fine Grain Nickel Base Superalloy at 982°C
... Table 3 lists the creep data. The creep curves of alloy A, B(1Re), and C(3Re) showed a steady-state creep stage, followed by an accelerating creep stage leading to failure; however, no primary creep stage was observed. ...
9
Transmission Electron Microscopy Sample Preparation of INCONEL 738 Nickel-Base Superalloy
... evaluated by SEM and TEM microstructure image quantification [7]. The electron microscope is an essential tool in materials science research for obtaining microstruct[r] ...
8
Research on Interlayer Alloys for Transient Liquid Phase Diffusion Bonding of Single Crystal Nickel Base Superalloy DD6
... the base metal rapidly, causing the melting point of base metal at the interface lower and the base metal melt, so the liquid phase area become ...
9
Detection of Rhenium Rich Particles at Grain Boundaries in Nickel Base Superalloy Turbine Blades
... at the shroud region and matrix was chosen and observed at high resolution. Figure 2 is a photograph and SEM images showing a stray grain formed in the shroud region of a CMSX- 10 single crystal turbine blade. It is ...
9
Influence of the initial cooling rate from γ′ supersolvus temperatures on microstructure and phase compositions in a nickel superalloy
... 1. Different cooling paths from a supersolvus heat treatment temperature have been applied on FGH96, a commercial powder metallurgy nickel base superalloy for turbine disc applications. The SEM ...
41
Effect of strain level on the evolution of microstructure in a recently developed AD730 nickel based superalloy during hot forging
... recrystallization in these zones and as a result they stay unchanged throughout the forging process. The non-recrystallized areas may be eliminated by increasing the strain level or changing strain path (i.e. different ...
21
Low cycle fatigue of a directionally solidified Nickel based superalloy : testing, characterisation and modelling
... Low cycle fatigue (LCF) of a low-carbon (LC) directionally-solidi fi ed (DS) nickel-base superalloy, CM247 LC DS, was investigated using both experimental and computational methods. Strain-controlled ...
12
Cyclic oxidation behavior of uncoated and aluminum-rich nickel aluminide coated Rene-80 superalloy
... Accordingly, nickel- based superalloys have been developed to improve the efficiency of turbine engines and their lifetime under the harsh conditions imposed by the turbine environment ...
7
μ Phase in a Nickel Base Directionally Solidified Alloy
... The properties may be affected by precipitation of the phase via several mechanisms. First, because of the intrinsic brittleness of the phase, it acts as a barrier to moving dislocations at the interface, which leads to ...
5
A nickel(II) complex of an unsymmetrical tetradentate Schiff base
... Unsymmetrical tetradentate Schiff base complexes are required to model the irregular binding of peptides (Atkins et al., 1985). In this context, compound (1) (HCBP-PHEN; see scheme) was prepared from the ...
15
Experimental Study and Computer Simulation of Fracture Toughness of Ni Base Superalloy using CT Specimen
... performance, Nickel-base Alloys 617 and 276 have been considered as structural material for used in complex and stochastic ...in nickel-based super alloys. Elastic-plastic fracture mechanics ...
13
Effects of Rhenium on Microstructure and Phase Stability of MAR M247 Ni Base Fine Grain Superalloy
... In this study, 0, 3, and 4.5 mass% elemental Re were added to Mar-M247 superalloy and named as Mar-M247, alloy A (3Re), and alloy B (4.5Re), respectively. Mar-M247 super- alloy and the Re addition were melted in a ...
8
Modelling plastic deformation in a single-crystal nickel-based superalloy using discrete dislocation dynamics
... Methods: In this paper, plastic deformation in a single-crystal nickel-based superalloy CMSX4 at elevated temperature was modelled using discrete dislocation dynamics (DDD). The DDD approach was implemented ...
14
Hydrothermal synthesis of copper (II) and Nickel (II) nano complexes with unsymmetric tetradentate Schiff base ligand. New precursors for preparation of copper (II) and nickel (II) oxides nano-particles
... 46. Mondal SK, Paul P, Roy R, Nag K. Metal complexes of sulphur-nitrogen chelating agents. Part 14. Nickel(II), palladium(II), copper(II), cobalt(II), and cobalt(III) complexes of the tetradentate schiff bases ...
8
Elemental preference and atomic scale site recognition in a Co Al W base superalloy
... Using atomic scale super energy dispersive X-ray spectroscopy and high angle annular dark field imaging we studied elemental partitioning in the γ′/γ structure and atomic site preference in a Co-Al-W-Ti-Ta ...
6
Fatigue crack growth in a Nickel based superalloy at elevated temperature : experimental studies, viscoplasticity modelling and XFEM predictions
... Crack growth simulation using finite element has been extensively carried out to study crack-tip plasticity and associated crack growth behaviour including closure ef- fects (Sehitoglu & Sun 1989; Pommier & ...
14