The creation of modified layer on metal surfaces using new methods is one of the procedures in surface engineering which can improve the surface mechanical properties. The electrical discharge process is a new method that can form a modified layer on the metal surfaces. This study aims to improve of pure aluminum surface properties through Electrical Discharge process with Monel 400 electrode. ...

Abstract The purpose of this paper is to investigate the effect annealing process at 1000 °C on machining parameters using contemporary techniques such as principal component analysis (PCA), hyper-parameter optimization by Optuna, multi-objective particle swarm optimization, and theoretical validation machine learning method. Results after show that there will be a reduction in surface roughnes...

The effect of loading rate (dK/dt) on the hydrogen environment-assisted cracking (HEAC) behavior Monel K-500 immersed in 0.6 M NaCl and polarized to −950 −1200 mVSCE was assessed via a slow-rising stress intensity (K) testing framework at dK/dt ranging from 0.2 20 MPa√m/hr. Comparative an inert environment (dry N2 with RH < 5%) 0.1 4 MPa√m/hr revealed clear dK/dt-dependence local plasticity eff...

Introduction The vertical misalignment of coil fields with respect to iron fields in cyclotrons can lead to significant beam losses in the course of beam extraction. During commissioning of the Coupled Cyclotron Project at the NSCL unusually high beam losses have been observed on an extraction magnetic element of the K500 cyclotron. The beam loss was first observed on the beam current profiles ...

Our present plans for a heavy-ion guide system are based on developments at Argonne National Laboratory (ANL) [1]. For the heavy-ion guide, preselection of ions will be done using a superconducting solenoid similar to that being used now in the BigSol spectrometer. Earlier tests with a 1 m long gas cell at low input intensities (below 10 ion/sec) have been carried out at ANL with beams up to 4 ...