Superalloys are a class of materials that possess stable microstructures at elevated temperatures due to the presence of coherent L12 ordered γ’ precipitates spatially aligned along elastically soft directions in a face centered cubic (FCC) γ matrix [1]. Nickel-base superalloys are used in a variety of applications such as in turbine blades of aircraft engines and land-based turbine engine [1]....

The new class of wrought γ-γ/ Co-base superalloys, which are based on Co-Al-W system,  was developed by conventional hot working routes with a high volume fraction of γ/ precipitates and good mechanical properties. The aim of the present study was to predict the flow stress and hot deformation modeling of a novel γ-γ/ Co-base superalloy. The hot compression test...

Co-base superalloys are considered as promising high temperature materials besides the well-established Ni-base superalloys. However, Ni appears to be an indispensable alloying element also in To address influence of base elements on deformation behaviour, high-temperature compressive creep experiments were performed a single crystal alloy series that was designed exhibit varying Co/Ni ratio an...

Nickel-Based Superalloys Nickel-based superalloys are used in the manufacturing of aircraft engine parts and widely studied for their outstanding mechanical resistance at high temperatures. In article number 2100414, Jean Almoric co-workers carried out a chemical characterization very resolution (<30nm) γ-γ' alloy allowing semi-quantification γ' precipitates. This is achieved with an innovative...

It is well known that the solution cooling rate has a great effect on the creep life of superalloys. In this research, three typical cooling rates were applied to generate different distributions of γ’ precipitates for creep tests. Ingots used to make specimens were manufactured by hot extrusion, and the master alloy had the composition of an FGH4096 power metallurgy superalloy. SEM and SESD we...

Gaussian process regression machine learning with a physically-informed kernel is used to model the phase compositions of nickel-base superalloys. The delivers good predictions for laboratory and commercial superalloys, R2>0.8 all but two components each γ γ′ phases, R2=0.924 (RMSE=0.063) fraction. For four benchmark SX-series alloys methodology predicts composition RMSE=0.006 fraction RMSE=0.0...

Increased operating temperatures and higher efficiency in gas turbines and jet engines can reduce CO2 emission, thus contributing to the prevention of global warming. To achieve this goal, it is essential to improve the properties of high temperature materials. Various Ni-base superalloys are used for high-temperature components, e.g., combustors and high-pressure turbine blades and vanes, that...

A suite of experimental tools and fast-acting, numerical-simulation techniques was used to quantify the precipitation behavior three nickel-base superalloys: IN-100, LSHR, 718. Experimental methods comprised differential scanning calorimetry (DSC) establish specific heat as a function temperature selected direct-resistance heating trials (using Gleeble® machine) obtain samples for microstructur...