The melt pool dynamics consideration in the numeric modeling of Laser Material Deposition (LMD) process can be enormously difficult and expensive, especially if this calculation is not strictly necessary. increased cost comes mainly from necessity considering a higher number input parameters into model addition to computational cost. Therefore, an analysis influence LMD its impact on accuracy presented. For purpose, that simulates fluid-dynamics has been developed experimentally validated...

Hot stamping dies include cooling channels to treat the formed sheet. The optimum of and molds should adapt shape surface dies, so that a homogeneous temperature distribution are guaranteed. Nevertheless, ducts conventionally manufactured by deep drilling, attaining straight unable follow geometry tool. Laser Metal Deposition (LMD) is an additive manufacturing technique capable fabricating nearly free-form integrated therefore so-called conformal cooling. present work investigates design...

At present, airframes are mainly composed of monolithic components, instead small parts joined using welding or riveting. Ribs, stringers, spars, and bulkheads can be included in this category. After milling, they assembled to the aircraft skins, which have also been milled. The aim these is obtain a good strength-weight ratio, owing their homogeneity. milling structural part implies removing up 95 per cent weight from raw block material. Therefore, main objective achieve highest removal...

With the advent of disruptive additive manufacturing (AM), there is an increasing interest and demand high mechanical property aluminium parts built directly by these technologies. This has led to need for continuous improvement AM technologies processes obtain best properties in samples develop new alloys. study demonstrated that porosity can be reduced below 0.035% area Al-Mg manufactured CMT-based WAAM with commercial filler metal wires selecting correct shielding gas, gas flow rate,...

The LMD technology is becoming one of the most important emerging manufacturing technologies in modern industry, due to its benefits when building-up geometries, repairing damaged parts or creation coatings improve material properties and behaviour. One relevant parameters process efficiency trapped powder into melt pool, since metallic powders use be very expensive. With aim improving ratio between deposited area total injected powder, work presents a new methodology for continuous coaxial...

Rolling contact fatigue is a unique mode of that components under cyclic loading experience. In this work, the impact induction hardening residual stresses in rolling lifetime investigated experimentally and numerically using Dang Van multiaxial criterion. Various stress fields from are simulated finite element method mapped into classical mono-contact model. The hardened on component has been investigated, importance incorporating profile life assessments affirmed.

The presented numerical model solves the heat and mass transfer equations in Laser Metal Deposition process based on evolution of thermal field predicts grainsize, resulting hardness evaluates pores formation probability an AISI 304 stainless steel. For this purpose, a first step, calculates shape deposited material variations temperature field. In second field, material, grainsize porosity after deposition process. Numerical results are experimentally validated, good agreement is obtained....

Abstract The numerical simulation of the induction heating process can be computationally expensive, especially if ferromagnetic materials are studied. There several analytical models that describe electromagnetic phenomena. However, these very limited by geometry coil and workpiece. Thus, usual method for computing more complex systems is to use finite element solve set equations in multiphysical system, but this easily becomes time consuming. This paper deals with problem solving a coupled...

Surface coatings enable more durable and sustainable solutions to face the degradation of functional surfaces high-added-value components. Particularly, metal matrix composites (MMC) are known mitigate friction efficiently. However, bonding strength MMCs severely limits their durability. Hence, it is not sufficient focus on wear performance. In this work, flexural interfacial Stellite 6/WC produced by Laser Directed Energy Deposition were investigated. The manufactured exhibited a strong...

The main propose of this paper is to study the laser hardening process with scanning or moving optics. This no conventional needs knowledge thermal history in part and an accurate control temperature. To end, new variables involved process, as speed distance between tracks, has been analyzed compared process. Also, different strategies sweep area harden have studied, recording contactless methods.

This work aims to present an XRCT-based FEM methodology assess the influence of porosity defects on mechanical behavior and failure L-PBF AlSi10Mg components. Hence, performance is estimated by means XRCT scanning analysis features, followed modelling digitalized For this purpose, some test specimens with induced artificial were manufactured L-PBF, according ASTM E8/E8M. Once done, inspection defect characterization carried out XRCT. Porosity features such as void size, shape location, apart...

In this study, nanomodified 2024 filler metal is investigated for WAAM applications based on CMT-PADV arc welding technology. Al-Cu series alloys are usually considered non weldable since they highly susceptible to hot cracking and show high porosity. paper it has been demonstrated that the addition of TiC nanoparticles wire enhances nucleation during liquid solid transformation, reducing grain size segregation obtaining as a result fine equiaxed microstructure which free cracks with very...