Metal Additive Manufacturing: A Review
Reads0
Chats0
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
Citations
More filters
Journal ArticleDOI
Optimization and reliability analysis to improve surface quality and mechanical characteristics of heat-treated fused filament fabricated parts
Sunpreet Singh,Manjeet Singh,Chander Prakash,Munish Kumar Gupta,Munish Kumar Gupta,Mozammel Mia,Rupinder Singh +6 more
TL;DR: In this article, a novel heat treatment approach has been utilized to improve the overall performance of printed parts by changing the levels of temperature (105, 115, and 125°C) and time duration (20, 25, and 30 min).
Journal ArticleDOI
An investigation on mechanical and microstructural properties of 316LSi parts fabricated by a robotized laser/wire direct metal deposition system
Meysam Akbari,Radovan Kovacevic +1 more
TL;DR: In this paper, a robotized laser/wire direct metal deposition system was utilized to fabricate 316LSi coupons and the mechanical and micro-structural properties were then characterized using two types of coupons, thin-walled and block, of short and long inter-layer time intervals were considered.
Journal ArticleDOI
Laser Polishing of Additive Manufactured 316L Stainless Steel Synthesized by Selective Laser Melting
TL;DR: This study focuses on the laser surface polishing of AM parts using CO2 laser beam irradiation in continuous wave (CW) working mode and the characterization of the measured roughness and the modified layer microstructure was carried out using 3D optical and scanning electron microscopy.
Journal ArticleDOI
Multiscale characterization of microstructures and mechanical properties of Inconel 718 fabricated by selective laser melting
Sharniece Holland,Sharniece Holland,Xiaoqing Wang,Xiaoqing Wang,Jia Chen,Wenjun Cai,Feng Yan,Lin Li +7 more
TL;DR: In this paper, a multiscale investigation of the microstructures and mechanical properties of Inconel 718 fabricated by selective laser melting (SLM) was performed on the as-SLM and heat-treated (HT) samples at various build locations.
Journal ArticleDOI
Role of heat treatment and build orientation in the microstructure sensitive deformation characteristics of IN718 produced via SLM additive manufacturing
Michael D. Sangid,Todd A. Book,Diwakar Naragani,John Rotella,Priya Ravi,Alexander Finch,Peter Kenesei,Jun-Sang Park,Hemant Sharma,Jonathan Almer,Xianghui Xiao +10 more
TL;DR: In this paper, the role of heat treatment and build orientation of selective laser melting IN718 is investigated through detailed characterization, and the microstructure of this material is probed through a combination of electron microscopy to identify precipitate structure, electron backscatter diffraction to quantify the grain-level features, and synchrotron-based X-ray microcomputed tomography to detect porosity.
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
P. A. Kobryn,S. L. Semiatin +1 more
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.