Microstructure and mechanical behaviour of an advanced powder metallurgy nickel base superalloy processed through hot isostatic pressing route for aerospace applications

Sreenu, B.; Sarkar, Rajdeep; Kumar, Sushil; Chatterjee, Subhradeep; Rao, G. Appa

doi:10.1016/j.msea.2020.140254

Cited by 65 publications

(18 citation statements)

References 38 publications

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“…Zhang et al [ 15 ] discussed the role of non-uniform precipitates on local plastic deformation in hot isostatic-pressed (HIPed) FGH96 alloy. Sreenu [ 16 ] investigated the microscopic structure features in a new P/M superalloy which was processed by the HIP route. In addition, the mathematical model is a vital way to depict the relationship between deformation conditions and rheological features, as well as the microscopic structure evolution in alloys [ 7 , 17 , 18 , 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Modeling Dynamic Recrystallization Behavior in a Novel HIPed P/M Superalloy during High-Temperature Deformation

et al. 2022

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The dynamic recrystallization (DRX) features and the evolution of the microstructure of a new hot isostatic pressed (HIPed) powder metallurgy (P/M) superalloy are investigated by hot-compression tests. The sensitivity of grain dimension and DRX behavior to deformation parameters is analyzed. The results reveal that the DRX features and grain-growth behavior are significantly affected by deformation conditions. The DRX process is promoted with a raised temperature/true strain or a reduced strain rate. However, the grains grow up rapidly at relatively high temperatures. At strain rates of o.1 s−1 and 1 s−1, a uniform microstructure and small grains are obtained. Due to the obvious differences in the DRX rate at various temperatures, the piecewise DRX kinetics equations are proposed to predict the DRX behavior. At the same time, a mathematical model for predicting the grain dimension and the grain growth behavior is established. To further analyze the DRX behavior and the changes in grain dimension, the hot deformation process is simulated. The developed grain-growth equation as well as the piecewise DRX kinetics equations are integrated into DEFORM software. The simulated DRX features are consistent with the test results, indicating that the proposed DRX kinetics equations and the established grain-growth model can be well used for describing the microstructure evolution. So, they are very useful for the practical hot forming of P/M superalloy parts.

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Section: Introductionmentioning

confidence: 99%

Modeling Dynamic Recrystallization Behavior in a Novel HIPed P/M Superalloy during High-Temperature Deformation

et al. 2022

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“…Based on the analysis of publication activity over the last 20-30 years, it is worth noting that there is a growing interest within the scientific community regarding the use of effective solutions for the treatment of heat-resistant nickel-based alloys [88][89][90][91][92][93][94][95][96][97][98][99][100][101][102][103]. Improving efficiency basically entails improving cutting conditions (cutting speed, feed) without losing the quality of the machined surface.…”

Section: Type Of Tool Materials For Machining Nickel-based Alloysmentioning

confidence: 99%

Ceramic Cutting Materials and Tools Suitable for Machining High-Temperature Nickel-Based Alloys: A Review

Seleznev

Pinargote

Smirnov

2021

Metals

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Nickel-based superalloys are attractive to many industrial sectors (automotive, military, energy, aerospace, etc.). However, their physical properties make them difficult to machining using traditional tools. Therefore, new materials for the machining of Ni-based alloys are required. Ceramic-based composites could act as a tool to replace the current materials. The incentives for this paper are to provide an overview of existing ceramic composites and draw some conclusions that will help in solving the problem of choosing materials for the processing of Ni-based superalloys. Despite the diversity of ceramic composites in this work, the possibility of using the SiAlON ceramic for Ni-based alloy machining is highlighted.

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“…In comparison, hot-pressing sintering is a more flexible preparation method for alloys and composites, with good formability and applicability [ 22 ]. Hot-pressing sintering has been successfully applied to the preparation of a variety of alloys and composites, such as, Nickel-based superalloy [ 23 , 24 ], AA6082-ZTA composites [ 25 ], Ti-Zr alloys [ 26 ], Al-Ti-Zr alloys [ 27 ], Ti35Zr28Nb [ 28 ], SiC/Al-Zn-Mg-Cu [ 29 ], (Ti,Zr)B2-(Zr,Ti)C [ 30 ], Zr-1.2Sn1Nb-0.4Fe, and Zr-1.2Bi-1Nb-0.4Fe [ 31 ], etc.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Thermal Deformation Behavior of Hot-Pressing Sintered Zr-6Al-0.1B Alloy

et al. 2022

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Zr-6Al-0.1B alloy rich in Zr3Al phase is prepared by hot-pressing sintering. The thermal deformation behavior of sintered Zr-6Al-0.1B is analyzed by isothermal compression tests at deformation temperatures of 950, 1050, and 1150 °C with strain rates of 0.01, 0.1, and 1 s−1. The results indicate that at the early stage of thermal deformation, the stress increases rapidly with the increase of strain and then reaches the peak value. Subsequently, the stress decreases with the increase of strain under the softening effect. On the whole, the true stress-strain curve shifts to the high stress area with the increase of strain rate or the decrease of deformation temperature, so the sintered Zr-6Al-0.1B alloy belongs to the temperature and strain rate sensitive material. For the microstructure evolution of sintered Zr-6Al-0.1B during the isothermal compression, the high strain rate can improve the grain refinement. However, because sintered Zr-6Al-0.1B is a low plastic material, too high strain rate will exceed the deformation capacity of the material, resulting in an increase in defects. The increase of deformation temperature also contributes to grain refinement, but when the temperature is too high, due to the decomposition of Zr3Al phase, the deformation coordination of the material decreases, leading to the increase of the probability of the occurrence of defects. This study verified the feasibility of hot-pressing sintering to prepare Zr-6Al-0.1B alloy rich in Zr3Al phase and laid the foundation of “hot-pressing sintering + canning hot-extrusion” process of Zr-6Al-0.1B alloy components.

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Microstructure and mechanical behaviour of an advanced powder metallurgy nickel base superalloy processed through hot isostatic pressing route for aerospace applications

Cited by 65 publications

References 38 publications

Modeling Dynamic Recrystallization Behavior in a Novel HIPed P/M Superalloy during High-Temperature Deformation

Modeling Dynamic Recrystallization Behavior in a Novel HIPed P/M Superalloy during High-Temperature Deformation

Ceramic Cutting Materials and Tools Suitable for Machining High-Temperature Nickel-Based Alloys: A Review

Microstructure and Thermal Deformation Behavior of Hot-Pressing Sintered Zr-6Al-0.1B Alloy

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