In this paper we present briefly two possible approaches for modelling the laser cladding process. The first approach is 2D and consists in finding the shape of the molten pool given the fraction of the laser power which is available at the surface of the workpiece and given the amount of powder sticking to the molten pool. The powder reaching the workpiece is assumed to melt instantaneously at...

In this Part II, a thorough investigation of the melting of the electrode; the droplet formation, detachment, transfer and impingement onto the workpiece, and the weld-pool formation and dynamics was conducted. The transient melt-flow velocity and temperature distributions in the droplet and in the weld pool were calculated. The resulting crater in the weld pool and the weld-pool oscillation du...

...................................................................................................................... iii ACKNOWLEDGMENTS ................................................................................................. vi TABLE OF CONTENTS ................................................................................................. viii LIST OF TABLES ........................

Introduction: Impact melt is a typical product produced during the cratering process as a result of the intense heating of the target usually because of pressure decompression, but also possible because of shear heating (Figure 1). Melt is observed on all of the terrestrial planets in both simple and complex craters [16]. High-resolution data for the Moon now allows impact melt deposits to be c...

The development of melt spinning technique for preparation of metallic glasses was summarized. The limitations as well as restrictions of the melt spinning embodiments were also analyzed. As an improvement and variation of the melt spinning method, the vertical-type twin-roll casting (VTRC) process was discussed. As the thermal history experienced by the casting metals to a great extent determi...

The Directed Energy Deposition Additive Manufacturing (DED-AM) of SS316L was studied using in situ and operando synchrotron X-ray imaging to quantitively understand the effect processing parameters on melt-pool morphology surface quality. It found that roughness DED-AM builds can result from melt pool perturbations caused by changes flow build stage motion perturbations. Process maps are develo...