[PDF] Top 20 Effect of W on the evolution of precipitates in Ni-Co-Cr-W-Mo super-alloys

... of alloys [14]. The calculated results of the tentative alloys with different contents of W are shown in ...4% W at a temperature range of 500 to 1500 ... See full document

... the precipitates was carefully calculated as follows: The silicon powder (NIST, 640C) used for X-ray diffraction analysis was thinly spread onto the buff-cleaned sample surface as flat as possible, according to the ... See full document

... these alloys in attempt to alter the microstructure in terms of precipitates to improve the properties of the alloy [4, ...of precipitates during solution ...biomedical Co-Cr-Mo ... See full document

... studied Ni-Cr-Mo alloys that are beneficial to improving alloy hardness, strength, resistance to damage from heat-treating operations, or corrosion resistance in a specific ...example, ... See full document

... £A precipitates in order to gain more insight about the microstructural stability of Co ­ Ni­Al­W-base ODS ...of Co-base ODS alloys are very few, and little is known quantitatively about the ... See full document

... of precipitates was recorded for castings with higher carbon ...the precipitates region of alloy than the content of cobalt, the amount of which in the pre- cipitates is lower than in the matrix ...Similar ... See full document

... Co-Cr-Mo alloys are used for total hip and knee implant ...that Co-Cr-Mo alloys possess excellent wear resistance, corrosion resistance, and biocom- ...When ... See full document

... commercial Ni-based superalloys, we have used two accurate methods, namely, the modified sessile drop method (MSDM) and the modified pycnometric method (MPM) to measure the densities of liquid nickel and ... See full document

... pronounced effect on the properties of steel and on the selection of suitable heat treatments to attain certain desired ...Mo20 alloys steels are noted as follows: Forging commence 1150 0 C maximum, forging ... See full document

... CCM alloys with precipitates are much higher than those of solution-treated precipitate-free CCM ...(including precipitates). Chiba et al. also reported that these precipitates promoted ... See full document

... In Ni-Cr alloys, resistance to corrosion is relatively high because of passivation effect of the oxide layer cov- ering a surface ...a Cr-depleted Ni-Be eutectic phase ... See full document

... detected as a minor precipitate during aging. In the Co-Cr- Mo-Ni system, Kurosu et al. reported the formation of intermetallic -phase during aging, which took place in the grain boundary ... See full document

... nickel-base Ni-Cr- W-Mo and GH4586A superalloys after electric field treat- ment reveal that annealing twins occurred in alloys and the number of annealing twins increase with the ... See full document

... Ni­38Cr­Al alloys occurs in a complicated manner as reported by Kawase et ...of Cr along the moving cell boundary and the acceleration effect of Al is attributed to the supersaturation of Cr ... See full document

... of Ni, tolerates high alloying element solubility with Cr (35 ...wt.%), Mo (20 wt.%) and W (20 ...of precipitates that is responsible for the high performance properties of Ni ... See full document

... both alloys in chloride solution at 60 0 ...significant effect on the growth of the passive ...these alloys is expected to be controlled by the Cr-Mo content [4, ...for Ni 2p, ... See full document

... deposited alloys was studied. The competing reduction of iron and tungsten in Fe-Co-W coatings as well as the competitive deposition of iron and cobalt in Fe-Co-Mo coatings at various ... See full document

... to be fairly good and certainly remind reading audience that the electroforming proceeded under the ideal condition. However, unlike the reproduction of the thin-films plating, the bulk nanocrystalline electroforming was ... See full document

... that Co can suppress the formation of ...of W, Mo or Cr was rarely observed in the oxide film, indicating that large oxidation reaction of these elements was not ...However, Co was ... See full document

... Nb-16Si-Mo-W alloys is shown in ...Nb-16Si-Mo-W alloys was almost 2.5 times higher than that of Nb-Mo-W alloys probably due to the segregation of molybdenum ... See full document