J
John W. Elmer
Researcher at Lawrence Livermore National Laboratory
Publications - 125
Citations - 8569
John W. Elmer is an academic researcher from Lawrence Livermore National Laboratory. The author has contributed to research in topics: Welding & Austenite. The author has an hindex of 30, co-authored 121 publications receiving 5818 citations. Previous affiliations of John W. Elmer include University of California.
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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.
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Microstructural development during solidification of stainless steel alloys
TL;DR: In this article, the influence of cooling rate on the microstructure of stainless steel alloys was investigated and the conditions that lead to the many microstructural morphologies that develop during solidification.
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Heat transfer and fluid flow during keyhole mode laser welding of tantalum, Ti–6Al–4V, 304L stainless steel and vanadium
TL;DR: In this paper, a keyhole model is developed and tested on tantalum, Ti-6Al-4V, 304L stainless steel and vanadium, and a turbulence model based on Prandtl's mixing length hypothesis is used to estimate the effective viscosity and thermal conductivity in the liquid region.
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Scientific, technological and economic issues in metal printing and their solutions
Tarasankar Debroy,T. Mukherjee,John O. Milewski,John W. Elmer,B. Ribic,J. J. Blecher,Wei Zhang +6 more
TL;DR: 3D printing is now widely used in aerospace, healthcare, energy, automotive and other industries, and is the fastest growing sector, yet its development presents scientific, technological and economic challenges that must be understood and addressed.
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In situ observations of lattice expansion and transformation rates of α and β phases in Ti–6Al–4V
TL;DR: In situ X-ray diffraction experiments using synchrotron radiation were performed on Ti-6Al-4V samples to directly observe the α→β phase transformation during heating.