Numerical modeling of heat-transfer and the influence of process parameters on tailoring the grain morphology of IN718 in electron beam additive manufacturing ☆
Narendran Raghavan,Ryan R. Dehoff,Sreekanth Pannala,Srdjan Simunovic,Michael M. Kirka,John A. Turner,Neil N. Carlson,S. Suresh Babu,S. Suresh Babu +8 more
Reads0
Chats0
TLDR
In this article, the authors developed a melt scan strategy for electron beam melting of nickel-base superalloy (Inconel 718) and also analyzed 3-D heat transfer conditions using a parallel numerical solidification code (Truchas) developed at Los Alamos National Laboratory.About:
This article is published in Acta Materialia.The article was published on 2016-06-15 and is currently open access. It has received 367 citations till now. The article focuses on the topics: Electron-beam additive manufacturing & Equiaxed crystals.read more
Citations
More filters
Journal ArticleDOI
Additive manufacturing of metallic components – Process, structure and properties
Tarasankar Debroy,Huiliang Wei,J.S. Zuback,T. Mukherjee,John W. Elmer,John O. Milewski,Allison M. Beese,Alexander E. Wilson-Heid,Amitava De,Wei Zhang +9 more
TL;DR: A review of the emerging research on additive manufacturing of metallic materials is provided in this article, which provides a comprehensive overview of the physical processes and the underlying science of metallurgical structure and properties of the deposited parts.
Journal ArticleDOI
Overview on Additive Manufacturing Technologies
Flaviana Calignano,Diego Manfredi,Elisa Paola Ambrosio,Sara Biamino,Mariangela Lombardi,Eleonora Atzeni,Alessandro Salmi,Paolo Minetola,Luca Iuliano,Paolo Fino +9 more
TL;DR: This paper provides an overview on the main additive manufacturing/3D printing technologies suitable for many satellite applications and, in particular, radio-frequency components.
Journal ArticleDOI
Revisiting fundamental welding concepts to improve additive manufacturing: From theory to practice
TL;DR: In this article, a unified equation to compute the energy density is proposed to compare works performed with distinct equipment and experimental conditions, covering the major process parameters: power, travel speed, heat source dimension, hatch distance, deposited layer thickness and material grain size.
Journal ArticleDOI
Grain structure control during metal 3D printing by high-intensity ultrasound.
C. J. Todaro,Mark Alan Easton,Dong Qiu,Duyao Zhang,Michael Bermingham,E. W. Lui,Milan Brandt,David H. StJohn,Ma Qian +8 more
TL;DR: The authors combine ultrasound and 3D printing to promote equiaxed and refined microstructures in a titanium alloy and a nickel-based superalloy resulting in improved mechanical properties.
Journal ArticleDOI
A review of mechanical properties of additively manufactured Inconel 718
E. Hosseini,Vera Popovich +1 more
TL;DR: Inconel 718 is one of the most commonly employed alloys for metal additive manufacturing (MAM) and has a wide range of applications in aircraft, gas turbines, turbocharger rotors, and a variety of other corrosive and structural applications involving temperatures of up to ∼700°C as discussed by the authors.
References
More filters
Journal ArticleDOI
Nickel-Based Superalloys for Advanced Turbine Engines: Chemistry, Microstructure and Properties
Tresa M. Pollock,Sammy Tin +1 more
TL;DR: The chemical, physical, and mechanical characteristics of nickel-based superalloys are reviewed with emphasis on the use of this class of materials within turbine engines as mentioned in this paper, and the role of major and minor alloying additions in multicomponent commercial cast and wrought super-alloys is discussed.
Journal ArticleDOI
Metal Fabrication by Additive Manufacturing Using Laser and Electron Beam Melting Technologies
Lawrence E Murr,Sara M. Gaytan,D. A. Ramirez,E. Martinez,Jennifer Hernandez,Krista Amato,P. W. Shindo,Francisco Medina,Ryan B. Wicker +8 more
TL;DR: In this paper, a comparative study of selective laser melting (SLM) and electron beam melting (EBM) is presented for the fabrication of complex, multi-functional metal or alloy monoliths by CAD-directed, selective melting of precursor powder beds.
Journal ArticleDOI
Steady state columnar and equiaxed growth of dendrites and eutectic
TL;DR: In this article, an analysis for the growth of equiaxed grains ahead of the columnar front during directional solidification is presented, and the model considers both single-phase and eutectic growth.
Invite d Review Metal Fabrication by Additive Manufacturing Using Laser and Electron Beam Melting Technologies
Lawrence E Murr,Sara M. Gaytan,D. A. Ramirez,E. Martinez,Jennifer Hernandez,Krista Amato,P. W. Shindo,Francisco Medina,Ryan B. Wicker +8 more
TL;DR: In this paper, a comparative study of selective laser melting (SLM) and electron beam melting (EBM) is presented for the fabrication of complex, multi-functional metal or alloy monoliths by CAD-directed, selective melting of precursor powder beds.
Journal ArticleDOI
Single-crystal laser deposition of superalloys: processing-microstructure maps
TL;DR: In this paper, a process called epitaxial laser metal forming (E-LMF) has been developed for single-crystal (SX) repair of cracked or worn parts.