The laser beam melting (LBM) process is a powder-based additive manufacturing able to produce parts layer-by-layer in hermetic chamber. Selection of the appropriate parameters and fabrication conditions plays fundamental role final properties. Investigating interaction between powder bed helps understand melt-pool behavior. In fact, even if processes offer appreciable advantages, some processin...

In laser powder bed fusion (LPBF), the stability of melt pool dynamics determines overall quality a manufactured component. this work, numerical model LPBF process was developed in order to study and fully understand behavior dynamics. The takes into account most manufacturing parameters, thermophysical properties, an enhanced thermal conductivity approach, volumetric heat source precisely simu...

Abstract The manufacturing of high-speed steel (HSS) components using the laser powder bed fusion (LPBF) process could create an unprecedented combination materials’ mechanical properties and design freedom enabled by to unlock new applications, such as milling heads with functionally optimized cooling channels. However, processing HSS LPBF shows high susceptibility cracking. This contribution ...

In this paper, the cracking of Al-Mn-Mg-Sc-Zr alloys prepared by selective laser melting (SLM) was comprehensively explored and influence process parameters on generation propagation cracks deeply studied. It found that higher power volume energy density will lead to a decrease in relative material. The lower or alloy. microstructure analysis indicated plenty manganese-rich second phases precip...

PURPOSE To report a case of corneal melting in a patient with fornix foreshortening being treated with reformulated generic diclofenac. METHODS Case report. RESULTS An asymptomatic 76-year old man presented with central corneal melting while being treated with reformulated generic diclofenac. This formulation did not contain the vitamin E derivative, tocophersolan, which has been felt to co...

We present the case of a young male that suffered from fungal corneal abscess and corneal melting. The patient was treated successfully by corneal cross-linking. Taking into account our experience from this case, we offer to consider corneal cross-linking as a therapeutic option in cases of fungal keratitis.

This paper presents the results of computational and physical studies on production corium its retention in an MR’s melt trap Lava-B facility. A feature facility used IAE NNC RK to study processes occurring during a severe accident at nuclear reactor, is separation stages reactor core formation interaction with structural materials. The melting materials takes place induction furnace hot crucib...

Abstract The limited access to materials for the Powder Bed Fusion of Metals using a Laser Beam (PBF-LB/M) is compensated by in situ alloying. Individual melt pool characteristics can be specifically influenced improve mechanical properties final part. However, conventional PBF-LB/M machines allow only detailed observation process zone and, particular, pool. This paper presents methodology syst...

Solidification is a key step in additive manufacturing technology because it determines the microstructure and performance of final product. Our work provides nanoscale description relevant solidification processes for polycrystalline Ni by means molecular dynamics simulations. In particular, we focus on thermal effects associated with characteristic non-stationary conditions manufacturing. Dir...

The quality of built parts by selective laser melting (SLM) relies on the comprehension phenomena that takes place during and solidification metal powder. scattering spatter particle as liquid SLM process affects layer consolidation powder bed in addition to surface part. present study is focused behavior maraging steel achieve a thorough understanding occur fusing particles are tracked using h...