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Additive Manufacturing Thermo-Mechanical Processing Influence on Tensile Mechanical Behavior

[+] Author Affiliations
Omar Fergani, Torgeir Welo

Norwegian University of Science and Technology, Trondheim, Norway

Steven Liang

Georgia Institute of Technology, Atlanta, GA

Mohamed Elmansori

Arts et Métiers ParisTech, Châlons-en-Champagne, France

Paper No. MSEC2017-2624, pp. V002T01A007; 6 pages
doi:10.1115/MSEC2017-2624
From:
  • ASME 2017 12th International Manufacturing Science and Engineering Conference collocated with the JSME/ASME 2017 6th International Conference on Materials and Processing
  • Volume 2: Additive Manufacturing; Materials
  • Los Angeles, California, USA, June 4–8, 2017
  • Conference Sponsors: Manufacturing Engineering Division
  • ISBN: 978-0-7918-5073-2
  • Copyright © 2017 by ASME

abstract

This study describes a new analysis framework for additive manufacturing. The concept of processes mechanics and thermo-mechanical processing are introduced to provide a physics-based understanding of the materials behavior and the state of residual stresses. A semi-Analytical approach based on the well-known moving heat source is used to predict temperature. Subsequently, the thermal stresses are calculated analytically thanks to Green’s functions. In order to demonstrate the influence of the process parameters on the mechanical properties, the tensile behavior and fracture morphology experiments on 316L are investigated experimentally. The obtained results are analyzed in the context of the predicted temperature and thermal stresses.

Copyright © 2017 by ASME

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