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Title: Revisiting solidification microstructure selection maps in the frame of additive manufacturing

Abstract

Understanding microstructural development in additive manufacturing under highly non-equilibrium cooling conditions and the consequent effects on mechanical properties of the final component is critical for accelerating industrial adoption of these manufacturing techniques. In this study, simple but effective theoretical solidification models are recalled to evaluate their ability to predict of microstructural features in additive manufacturing applications. As a case study, the resulting solidification microstructure selection maps are created to predict the stable growth modality and the columnar to equiaxed transition (CET) of an Al-10Si-0.5Mg alloy processed via Selective Laser Melting. The potential of this method in microstructural predictions for additively manufactured products, as well as outstanding challenges and limitations, are discussed.

Authors:
 [1]; ORCiD logo [2];  [1]
  1. McMaster Univ., Hamilton, ON (Canada)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Oak Ridge National Lab. (ORNL), Knoxville, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1607111
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Additive Manufacturing
Additional Journal Information:
Journal Volume: 31; Journal Issue: C; Journal ID: ISSN 2214-8604
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; rapid solidification; solidification microstructure selection maps; additive manufacturing; columnar to equiaxed transition

Citation Formats

Mohammadpour, Pardis, Plotkowski, Alex, and Phillion, Andre B. Revisiting solidification microstructure selection maps in the frame of additive manufacturing. United States: N. p., 2019. Web. https://doi.org/10.1016/j.addma.2019.100936.
Mohammadpour, Pardis, Plotkowski, Alex, & Phillion, Andre B. Revisiting solidification microstructure selection maps in the frame of additive manufacturing. United States. https://doi.org/10.1016/j.addma.2019.100936
Mohammadpour, Pardis, Plotkowski, Alex, and Phillion, Andre B. Thu . "Revisiting solidification microstructure selection maps in the frame of additive manufacturing". United States. https://doi.org/10.1016/j.addma.2019.100936. https://www.osti.gov/servlets/purl/1607111.
@article{osti_1607111,
title = {Revisiting solidification microstructure selection maps in the frame of additive manufacturing},
author = {Mohammadpour, Pardis and Plotkowski, Alex and Phillion, Andre B.},
abstractNote = {Understanding microstructural development in additive manufacturing under highly non-equilibrium cooling conditions and the consequent effects on mechanical properties of the final component is critical for accelerating industrial adoption of these manufacturing techniques. In this study, simple but effective theoretical solidification models are recalled to evaluate their ability to predict of microstructural features in additive manufacturing applications. As a case study, the resulting solidification microstructure selection maps are created to predict the stable growth modality and the columnar to equiaxed transition (CET) of an Al-10Si-0.5Mg alloy processed via Selective Laser Melting. The potential of this method in microstructural predictions for additively manufactured products, as well as outstanding challenges and limitations, are discussed.},
doi = {10.1016/j.addma.2019.100936},
journal = {Additive Manufacturing},
number = C,
volume = 31,
place = {United States},
year = {2019},
month = {11}
}

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