Microstructure and mechanical properties of a novel polycrystalline rhenium-containing nickel-based disc superalloy subjected to hot forging

Mukhtarov, Shamil; Shakhov, Ruslan; Ganeev, Artem; Gaisin, Ramil; Logunov, A. V.; Imayev, V. M.; Imayev, R. M.

doi:10.1088/1757-899x/447/1/012055

Cited by 2 publications

(3 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is seen that the strength properties and long-term strength obtained for SDZhS-15 are appreciably higher as compared with those of other industrial disc superalloys (Table 1). Note that the tensile properties were found to be higher than those obtained in our previous work [14]. Particularly, the superalloy showed fairly higher strength and ductility at room temperature.…”

Section: Effect Of Hot Working On Microstructure and Mechanical Prope...contrasting

confidence: 70%

“…XRD analysis of the as-cast superalloy has revealed only peaks corresponding to γ and γ′ phases; any undesirable phases including TCP ones were not detected in the superalloy (within the sensitivity of XRD analysis) [14]. Figure 1 represents the BSE images of the as-cast condition of the superalloy.…”

Section: Resultsmentioning

confidence: 99%

“…This can be ascribed to the fact that two-step hot forging with intermediate annealing was more favourable for recrystallisation processes than single-step forging applied in ref. [14]. The ductility of the superalloy decreased with increasing the test temperature that else needs to be clarified.…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Recrystallisation behaviour and mechanical properties of a novel Re-containing nickel-base superalloy

Mukhtarov

Imayev

Logunov

et al. 2019

Materials Science and Technology

View full text Add to dashboard Cite

A newly developed heavily alloyed polycrystalline nickel-base superalloy containing rhenium and intended as a structural material for turbine discs in gas turbine engines has been studied. Homogenisation and heterogenisation heat treatments were developed for the as-cast superalloy, which led to improving the hot workability as compared to that of as-cast material. electron backscatter diffraction analysis of samples isothermally compressed at temperatures near the solvus temperature showed that continuous dynamic recrystallisation occurred in the superalloy leading to the formation of refined recrystallised structure. These results were used for the development of canned forging processing under quasi-isothermal conditions. The superalloy subjected to canned forging followed by aging exhibited superior high strength and high-temperature capability, while retaining reasonable ductility as compared to known disc superalloys.

show abstract

Section: Effect Of Hot Working On Microstructure and Mechanical Prope...contrasting

confidence: 70%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Recrystallisation behaviour and mechanical properties of a novel Re-containing nickel-base superalloy

Mukhtarov

Imayev

Logunov

et al. 2019

Materials Science and Technology

View full text Add to dashboard Cite

show abstract

Microstructure evolution of a Re-containing nickel-based superalloy by hot deformation and cold severe plastic deformation

Mukhtarov

Shakhov

Ganeev

2019

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

The microstructure evolutions of the cast rhenium containing nickel-based superalloy subjected to thermomechanical treatment and severe plastic deformation by high pressure torsion were investigated. Thermomechanical treatment led to the formation a fine-grained structure with γ grain size of about 7 μm and both large precipitates of the γ’ phase with a size of 1-5 μm and dispersed precipitates with a size of about 0.2 μm. Microstructure of the superalloy subjected to high pressure torsion up to 5 revolutions was nanocrystalline with partly dissolved of the dispersed γ′ precipitates. The effect of different kinds of deformation and subsequent annealing on the microstructure, grain boundaries and microhardness changes are also discussed.

show abstract

Microstructure and mechanical properties of a novel polycrystalline rhenium-containing nickel-based disc superalloy subjected to hot forging

Cited by 2 publications

References 8 publications

Recrystallisation behaviour and mechanical properties of a novel Re-containing nickel-base superalloy

Recrystallisation behaviour and mechanical properties of a novel Re-containing nickel-base superalloy

Microstructure evolution of a Re-containing nickel-based superalloy by hot deformation and cold severe plastic deformation

Contact Info

Product

Resources

About