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Title: Correlations of Interlayer Time with Distortion of Large Ti-6Al-4V Components in Laser Metal Deposition with Wire

Abstract

Laser metal deposition with wire (LMD-w) is one of the emerging additive manufacturing (AM) technologies for large-scale aerospace components due to high deposition rates and material efficiency. However, it often results in undesired stresses and distortions due to non-uniform expansion and contraction of material during the printing. Controlling of inter-layer time, preheating and clamping is the effective method to mitigate the thermally induced stress and deformation. In this study, the effect of inter-layer time on the part distortion is investigated using finite element method (FEM). The model accounts for actual tool path, power and cooling conditions. The results show that the model effectively captures the fluctuation of the Ti-6Al-4V plate during printing. Also, it shows an asymmetric distortion on the plate edges. Ultimately, the sequentially coupled thermal-stress simulation provided a quantitative understanding of the inter-layer cooling time on the Ti plate distortion for the large-scale LMD-w process.

Authors:
ORCiD logo [1];  [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]
  1. ORNL
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:
1481693
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Conference
Resource Relation:
Conference: Solid Freeform Fabrication - Austin, Texas, United States of America - 8/13/2018 8:00:00 AM-8/15/2018 8:00:00 AM
Country of Publication:
United States
Language:
English

Citation Formats

Lee, Yousub, Bandari, Yashwanth Kumar, Simunovic, Srdjan, Richardson, Bradley S., and Kirka, Michael M. Correlations of Interlayer Time with Distortion of Large Ti-6Al-4V Components in Laser Metal Deposition with Wire. United States: N. p., 2018. Web.
Lee, Yousub, Bandari, Yashwanth Kumar, Simunovic, Srdjan, Richardson, Bradley S., & Kirka, Michael M. Correlations of Interlayer Time with Distortion of Large Ti-6Al-4V Components in Laser Metal Deposition with Wire. United States.
Lee, Yousub, Bandari, Yashwanth Kumar, Simunovic, Srdjan, Richardson, Bradley S., and Kirka, Michael M. Thu . "Correlations of Interlayer Time with Distortion of Large Ti-6Al-4V Components in Laser Metal Deposition with Wire". United States. https://www.osti.gov/servlets/purl/1481693.
@article{osti_1481693,
title = {Correlations of Interlayer Time with Distortion of Large Ti-6Al-4V Components in Laser Metal Deposition with Wire},
author = {Lee, Yousub and Bandari, Yashwanth Kumar and Simunovic, Srdjan and Richardson, Bradley S. and Kirka, Michael M.},
abstractNote = {Laser metal deposition with wire (LMD-w) is one of the emerging additive manufacturing (AM) technologies for large-scale aerospace components due to high deposition rates and material efficiency. However, it often results in undesired stresses and distortions due to non-uniform expansion and contraction of material during the printing. Controlling of inter-layer time, preheating and clamping is the effective method to mitigate the thermally induced stress and deformation. In this study, the effect of inter-layer time on the part distortion is investigated using finite element method (FEM). The model accounts for actual tool path, power and cooling conditions. The results show that the model effectively captures the fluctuation of the Ti-6Al-4V plate during printing. Also, it shows an asymmetric distortion on the plate edges. Ultimately, the sequentially coupled thermal-stress simulation provided a quantitative understanding of the inter-layer cooling time on the Ti plate distortion for the large-scale LMD-w process.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {11}
}

Conference:
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