MATEC Web Conf.
Volume 237, 20182018 3rd International Conference on Design, Mechanical and Material Engineering (D2ME 2018)
|Number of page(s)||8|
|Section||Chapter 1: Mechanical Engineering|
|Published online||26 November 2018|
Study on Deformation Behavior of Ti6Al4V Parts Fabricated by Selective Laser Melting
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China
a Corresponding author: firstname.lastname@example.org
During the Selective laser melting process, the accumulation of the residual stress caused by the excessive temperature gradients and the rapid solidification is the main factor causing deformation; and the wetting quality of the meltpool also has an impact. How to control the deformation is the key problem to improve the quality of the parts. In this paper, the thin-wall specimens are divided into four distinct conditions, analyzing the meltpool date collected by the melting pool monitoring system and the simulation of temperature field, the relationship between the process parameters and the deformation under the same energy density is discussed. The results show that the temperature, the width and the intensity of the meltpool increase with the increasing of the laser power and the scanning speed, but the temperature gradients and the rate of the solidification of the meltpool are on the contrary, resulting in the decrease of the residual stress and the deformation of the part, which is help to improve the quality of the part.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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