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J. Manuf. Mater. Process. 2017, 1(1), 3; doi:10.3390/jmmp1010003

Analytical and Numerical Temperature Prediction in Direct Metal Deposition of Ti6Al4V

1
Ecole Centrale de Lyon, 69134 Ecully Cedex, France
2
Department of Mechanical and Industrial Engineering, NTNU, Richard Birkeland’s vei 2B, 7010 Trondheim, Norway
3
SINTEF Manufacturing, 7010 Trondheim, Norway
4
Chair for Mechanical Design and Manufacturing, BTU Cottbus-Senftenberg, 03046 Cottbus, Germany
5
ENSAM, MSMP Laboratory (EA-7350), 2 cours des Arts et Métiers, 13617 Aix-en-Provence, France
*
Author to whom correspondence should be addressed.
Received: 18 May 2017 / Revised: 17 June 2017 / Accepted: 18 June 2017 / Published: 10 July 2017
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Abstract

Direct Metal Deposition (DMD) is an additive manufacturing (AM) process capable of producing large components using a layer by layer deposition of molten powder. DMD is increasingly investigated due to its higher deposition rate and the possibility to produce large structural components specifically for the aerospace industry. During fabrication, a complex thermal history is experienced in different regions of the workpiece, depending on the process parameters and part geometry. The thermal history induces residual stress accumulation in the buildup, which is the main cause of distortions. In order to control the process and enhance the product quality, the understanding of the workpiece temperature is substantial. In this study, two methods to predict temperature evolution during the DMD process are introduced based on analytical and finite element methods. The objective is to compare these methods to experimental results and to provide more insights about their capabilities to predict accurately the temperature gradient, the cooling rate, and the melt pool geometry. A comparison of the computational time is also provided. Based on the results of the investigation, It appears that the analytical method provides an effective and accurate method to understand the influence of the process on the workpiece temperature. View Full-Text
Keywords: additive manufacturing; direct metal deposition; temperature; prediction; analytical; finite element; melt pool additive manufacturing; direct metal deposition; temperature; prediction; analytical; finite element; melt pool
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

de La Batut, B.; Fergani, O.; Brotan, V.; Bambach, M.; El Mansouri, M. Analytical and Numerical Temperature Prediction in Direct Metal Deposition of Ti6Al4V. J. Manuf. Mater. Process. 2017, 1, 3.

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J. Manuf. Mater. Process. EISSN 2504-4494 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
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