Controlling grain nucleation and morphology by laser beam shaping in metal additive manufacturing

Gaussian laser intensity profiles are standard in laser-based metal additive manufacturing, although recent work in single-layer melt tracks showed that beam shaping could offer a feasible route towards microstructural control. Since thermal cycling and grain orientation templating in multilayer bui...

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Autori principali: Tien T. Roehling, Rongpei Shi, Saad A. Khairallah, John D. Roehling, Gabe M. Guss, Joseph T. McKeown, Manyalibo J. Matthews
Natura: Artigo
Lingua:Inglês
Pubblicazione: Elsevier 2020-10-01
Serie:Materials & Design
Soggetti:
Laser powder bed fusion
Beam shape
Microstructure control
Solidification
Stainless steel
Accesso online:http://www.sciencedirect.com/science/article/pii/S0264127520306067
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