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Erschienen in:

2015 | OriginalPaper | Buchkapitel

2. Laser Additive Manufacturing (AM): Classification, Processing Philosophy, and Metallurgical Mechanisms

verfasst von : Prof. Dr. Dongdong Gu

Erschienen in: Laser Additive Manufacturing of High-Performance Materials

Verlag: Springer Berlin Heidelberg

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Abstract

Laser sintering (LS), laser melting (LM), and laser metal deposition (LMD) are presently regarded as the three most versatile laser-based additive manufacturing (AM) processes. Laser-based AM processes generally have a complex nonequilibrium physical and chemical metallurgical nature, which is material- and process-dependant. The influence of material characteristics and processing conditions on the metallurgical mechanisms and resultant microstructural and mechanical properties of AM-processed components needs to be clarified. This chapter starts with the definition of LS/LM/LMD processes and operative consolidation mechanisms for metallic components. Powder materials used for AM, in the categories of pure metal powder, prealloyed powder, multi-component metals, alloys, metal matrix composites (MMCs) powder, and associated densification mechanisms during AM are addressed. An in-depth review of material and process aspects of AM, including the physical aspects of materials for AM and the microstructural and mechanical properties of AM-processed components, is presented. The purpose of this chapter is to establish a general relationship among material, process, and metallurgical mechanism for laser-based AM of metallic components.

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Titel: Laser Additive Manufacturing (AM): Classification, Processing Philosophy, and Metallurgical Mechanisms
verfasst von: Prof. Dr. Dongdong Gu
Verlag: Springer Berlin Heidelberg
Buch: Laser Additive Manufacturing of High-Performance Materials
Print ISBN: 978-3-662-46088-7

Electronic ISBN: 978-3-662-46089-4

Copyright-Jahr: 2015
DOI: https://doi.org/10.1007/978-3-662-46089-4_2

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