scispace - formally typeset
Open AccessJournal ArticleDOI

Metal Additive Manufacturing: A Review

TLDR
The state-of-the-art of additive manufacturing (AM) can be classified into three categories: direct digital manufacturing, free-form fabrication, or 3D printing as discussed by the authors.
Abstract
This paper reviews the state-of-the-art of an important, rapidly emerging, manufacturing technology that is alternatively called additive manufacturing (AM), direct digital manufacturing, free form fabrication, or 3D printing, etc. A broad contextual overview of metallic AM is provided. AM has the potential to revolutionize the global parts manufacturing and logistics landscape. It enables distributed manufacturing and the productions of parts-on-demand while offering the potential to reduce cost, energy consumption, and carbon footprint. This paper explores the material science, processes, and business consideration associated with achieving these performance gains. It is concluded that a paradigm shift is required in order to fully exploit AM potential.

read more

Content maybe subject to copyright    Report

Citations
More filters
Journal ArticleDOI

3D-printing porosity: A new approach to creating elevated porosity materials and structures.

TL;DR: A new process is introduced that enables the ability to 3D-print high porosity materials and structures by combining the newly introduced3D-Painting process with traditional salt-leaching, and it is shown that this process can be extended to other materials including graphene, metals, and ceramics.
Journal ArticleDOI

Laser Additive Manufacturing of Magnetic Materials

TL;DR: In this paper, the use of directed energy deposition-based additive manufacturing technologies, such as the laser engineered net shaping (LENS™) process, to deposit magnetic alloys is discussed.
Journal ArticleDOI

Clinical, industrial, and research perspectives on powder bed fusion additively manufactured metal implants

TL;DR: A viable future for AM of metal implants is presented, and it is suggested that continuing collaboration between all stakeholders will enable acceleration of the translation process.
Journal ArticleDOI

Wire and Arc Additive Manufacturing of Aluminum Components

TL;DR: In this paper, the effects of the welding process on buildup accuracy and material properties during wire arc additive manufacturing of aluminum structures were analyzed in terms of surface finishing, hardness, and residual stress.
Journal ArticleDOI

In-situ distortions in LMD additive manufacturing walls can be measured with digital image correlation and predicted using numerical simulations

TL;DR: In this article, a digital image correlation (DIC) is applied together with optical filters to measure in-situ distortions directly on a wall geometry produced with additive manufacturing (AM) laser metal deposition (LMD).
References
More filters
Journal ArticleDOI

As-Fabricated and Heat-Treated Microstructures of the Ti-6Al-4V Alloy Processed by Selective Laser Melting

TL;DR: In this paper, the authors presented the various types of microstructure of the Ti-6Al-4V alloy after post-fabrication heat treatments below or above the β transus.
Journal ArticleDOI

Microstructure and Mechanical Properties of Wire and Arc Additive Manufactured Ti-6Al-4V

TL;DR: In this paper, the macrostructure, microstructure and mechanical properties of a Ti-6Al-4V alloy after WAAM deposition have been investigated, and the average yield and ultimate tensile strengths of the as-deposited material were found to be slightly lower than those for a forged Ti- 6Al 4V bar (MIL-T 9047), however, the ductility was similar and the mean fatigue life was significantly higher.
Journal ArticleDOI

Cost estimation for rapid manufacturing - laser sintering production for low to medium volumes:

TL;DR: In this article, a cost model for laser sintering is proposed, which leads to graph profiles that are typical for layer-by-layer manufacturing processes, and the evolution of cost models and the indirect cost significance in modern costing representation is shown.
Journal ArticleDOI

Environmental aspects of laser-based and conventional tool and die manufacturing

TL;DR: In this paper, the authors investigated three case studies to reveal the extent to which DMD-based manufacturing of molds and dies can currently achieve reduced environmental emissions and energy consumption relative to conventional manufacturing pathways.
Journal ArticleDOI

The laser additive manufacture of Ti-6Al-4V

TL;DR: In this paper, the relationship between LAM processing parameters and microstructure in as-deposited Ti-6Al-4V was investigated, and the results presented in this paper provide a first look at the relationships between the two parameters.
Related Papers (5)