[PDF] Top 20 An approach to microstructure modelling in nickel based superalloys

... a microstructure as well as specific microstructural characteristics within those ...of microstructure on the rheological behaviour of a ...the microstructure from class to class can be described ... See full document

... their microstructure and mechanical properties, as well as their damage ...dual-phase microstructure plays an important role in the damage mechanisms, namely initiation and accumulation ...numerical ... See full document

... multi-scale approach for simulation of response of these types of ...dislocation-density based crystal plasticity model is developed which simulates the response of various types of micro-structures within ... See full document

... The state-of-the-art in this field includes different studies and applications on various problems. Accordingly, thermal models coupled with mechanical ones can be used to numerically simulate LPBF processes to ... See full document

... keep increasing. The casting system of the hot-end parts are intricacy and this leads to the difficulty of controlling the segregation of the components. The cooling rate has a significant effect on segregation. Numerous ... See full document

... in Nickel superalloys in the future since this is our first simulation for the PS- ...model based on Peierls-Nabarro model will be inte- grated into LAMMPS to enhance the EAM potential and to ... See full document

... of nickel released into the corrosive medium was taken as a measure of the corrosion ...fine microstructure were found to resist corrosion compared to those with coarse ...solution based on ... See full document

... In many cases, precipitation of TCP phases degrades mechanical properties by removing the refractory solid- solution strengthening elements from the constituent g 0 and g phases. The rodlike or platelike morphologies of ... See full document

... A theory for the reduction of SLM alloy crack suscepti- bility has been presented. It was proposed that an alloy’s resistance to cracking can be improved by increasing the concentration of substitutional solid solution ... See full document

... was based on the observation of strain accumulation, from both modelling [24–27] and experiments [28,29], near a crack tip under fatigue loading ...grain microstructure, and this can be attempted by ... See full document

... The second type of model is obtained by skeletising the original micrograph image and extruding the resulting planar cell arrangement to form a prismatic FE model based on the real cell geometry. The resulting ... See full document

... DS nickel-based superalloy, by employing a combination of testing, microstructural characterisation and numerical ...solidified nickel-based superalloy CM247 LC DS, strain-controlled LCF tests ... See full document

... from nickel based superalloys often involves sequential processes of forging, quenching, heat treatment and ...strength nickel based superalloy that has recently been developed by ... See full document

... the microstructure of dilute Fe alloys as complex as Fe-CuNiMnSiP-C under irradiation are modelled using a multiscale approach based on ab initio, molecular dynamics and kinetic Monte Carlo (KMC) ... See full document

... that nickel-based superalloys exhibited serrated stress–strain curves during high temperatures (300 °C ~ 950 °C) and possible mechanisms were discussed to explain the ap- pearance of these ... See full document

... The complexity of the layered coating system can give rise to in and out of plane thermal stresses. Due to the variations in their chemistry and atomic bonding, the TBC, TGO, BC and substrate have considerably different ... See full document

... of microstructure development in the real multi-operational industrial processes remains in general ...718 nickel-base superalloys and a range of forging trials of different levels of complexity were ... See full document

... The contrast in cross-sectional microstructure along the depth from the surface indicates that several phases exist in the coated layer. The coated layer can be divided into 2 sub- layers: the first sub-layer is ... See full document

... elastically inhomogeneous systems, in which an iterative approach is used for solving the elastic equilibrium equation numerically. They concluded that it required a rather strong elastic inhomogeneity (>50%) ... See full document

... The OCP plots of corrosion potential versus exposure time for NO7718 and NO7208 nickel alloys Fig. 2(a) and (b) at 0% NaCl without applied potential started at -0.058V and -0.001V (0s). The plot for NO7718 ... See full document