Journal ArticleDOI
Effects of heat accumulation on the arc characteristics and metal transfer behavior in Wire Arc Additive Manufacturing of Ti6Al4V
TLDR
In this paper, the influence of heat accumulation on bead formation, arc stability, and metal transfer behavior during the manufacture of Ti6Al4V with the gas tungsten wire arc additive manufacturing (GT-WAAM) using localized gas shielding.About:
This article is published in Journal of Materials Processing Technology.The article was published on 2017-12-01. It has received 190 citations till now. The article focuses on the topics: Arc (geometry) & Machining.read more
Citations
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Journal ArticleDOI
A review of the wire arc additive manufacturing of metals: properties, defects and quality improvement
TL;DR: In this paper, the authors review the emerging research on wire arc additive manufacturing (WAAM) techniques and the commonly used metallic feedstock materials, and also provide a comprehensive over view of the metallurgical and material properties of the deposited parts.
Journal ArticleDOI
Invited review article: Strategies and processes for high quality wire arc additive manufacturing
TL;DR: In this article, the authors identified the materials processing challenges in wire-arc additive manufacturing (WAAM), including high residual stresses, undesirable microstructures, and solute segregation and phase transformations at solidification.
Journal ArticleDOI
Current Status and Perspectives on Wire and Arc Additive Manufacturing (WAAM)
Tiago A. Rodrigues,Valdemar R. Duarte,Rosa Maria Mendes Miranda,Telmo G. Santos,João Pedro Oliveira +4 more
TL;DR: This review paper aims to provide an overview of the most significant achievements in WAAM, highlighting process developments and variants to control the microstructure, mechanical properties, and defect generation in the as-built parts; the most relevant engineering materials used; the main deposition strategies adopted to minimize residual stresses and the effect of post-processing heat treatments to improve the mechanical properties of the parts.
Journal ArticleDOI
Wire and arc additive manufacturing : Opportunities and challenges to control the quality and accuracy of manufactured parts
TL;DR: In this paper, the authors focus on process planning including build orientation, slicing, and path planning, as well as the definition of process parameter selection from a single track to multi-track and multilayer, and finally geometric features from a thinwall to lattice structures with several case studies.
Journal ArticleDOI
The effects of forced interpass cooling on the material properties of wire arc additively manufactured Ti6Al4V alloy
TL;DR: In this paper, an innovative wire arc additive manufacturing (WAAM) process with forced interpass cooling using compressed CO2 was employed to fabricate Ti6Al4V thin-walled structures.
References
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PatentDOI
Direct selective laser sintering of metals
Suman Das,Joseph J. Beaman +1 more
TL;DR: In this paper, a method of fabricating a fully dense, three dimensional object by direct laser sintering is disclosed, in which a degased powder layer is dispensed over a target surface and a beam of directed energy melts metallic powder in order to form a solid layer cross section.
BookDOI
Theory and practice of radiation thermometry
David P. DeWitt,Gene D. Nutter +1 more
TL;DR: In this paper, DeWitt et al. presented a method for counting the effective emissions of Cavity Sources of Thermal Radiation (R. Bedford et al., 2003) and Detector-Based Traceability of Temperature Standards (A. Ono, et al.).
Journal ArticleDOI
Thermo-mechanical analysis of Wire and Arc Additive Layer Manufacturing process on large multi-layer parts
Jialuo Ding,Paul A. Colegrove,Jörn Mehnen,Supriyo Ganguly,P. M. Sequeira Almeida,Fude Wang,Stewart W. Williams +6 more
TL;DR: In this article, the authors describe the thermo-mechanical behavior of the multi-layer wall structure made by the wire and arc additive layer manufacturing (WAALM) process.
Journal ArticleDOI
Investigation of the benefits of plasma deposition for the additive layer manufacture of Ti–6Al–4V
TL;DR: In this paper, a working envelope for the process using Ti-6Al-4V was developed, and regression models were calculated for total wall width, effective wall width and layer height.
Journal ArticleDOI
Characterization of titanium aluminide alloy components fabricated by additive manufacturing using electron beam melting
Lawrence E Murr,Sara M. Gaytan,A. Ceylan,E. Martinez,J.L. Martinez,D.H. Hernandez,B.I. Machado,D. A. Ramirez,Francisco Medina,S. Collins,Ryan B. Wicker +10 more
TL;DR: The residual microindentation (Vickers) hardness (HV) averaged 4.1 GPa, corresponding to a nominal yield strength of ∼1.4 GPa (∼HV/3), and a specific yield strength (specific yield strength) of 0.37 GPa cm3 g−1 (for a density of 3.76 g cm−3), in contrast to 0.27 GPa kg−1 for EBM-fabricated Ti−6Al−4V components.