Tensile behavior in selective laser melting

By the nature of selective laser melting (SLM) additive manufacturing (AM), property variations are likely to arise in specific structures of parts. The problem here is that it is hard to predict exactly how properties will be affected or conversely, how the mechanical properties in local sections o...

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Bibliographic Details
Published in:International journal of advanced manufacturing technology Vol. 96; no. 1-4; pp. 1187 - 1194
Main Authors: Ortiz Rios, Cesar, Amine, Tarak, Newkirk, Joseph W.
Format: Journal Article
Language:English
Published: London Springer London 01.04.2018
Springer Nature B.V
Subjects:
CAE) and Design
Computer-Aided Engineering (CAD
Engineering
Indentation
Industrial and Production Engineering
Laser beam melting
Mechanical Engineering
Mechanical properties
Media Management
Original Article
Rapid prototyping
Tensile tests
Additive manufacturing
Selective laser melting
Stainless steel
Mechanical property variations
ISSN:0268-3768, 1433-3015
Online Access:Get full text
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Summary:By the nature of selective laser melting (SLM) additive manufacturing (AM), property variations are likely to arise in specific structures of parts. The problem here is that it is hard to predict exactly how properties will be affected or conversely, how the mechanical properties in local sections of the built parts can be intentionally changed. There is little known about how build geometry and grain structures unique to SLM affects the mechanical properties of SLM parts. To address this issue, various SLM manufactured parts, created using the Renishaw ™ AM 250, were tested for significant variation in mechanical properties. Specifically, the use of both mini tensile tests and Automated Ball Indentation (ABI) is employed to incrementally test localized sections. ABI has the potential to greatly improve the ability to monitor properties. This research advances collective understanding of AM and leads to methods that assure property uniformity or intentional manipulation of mechanical properties.
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ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-018-1663-0