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Published in: Metals and Materials International 12/2022

13-05-2022

Novel Strategy for Reducing Residual Stress in Titanium Alloy Parts Obtained via Additive Manufacturing

Authors: Xinfa Sun, Yucheng Zhao, Weiming Yang, Wenyu Li, Dengfeng Yang, Haishun Liu

Published in: Metals and Materials International | Issue 12/2022

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Abstract

The additive manufacturing of titanium alloy parts has important scientific significance and practical value. Controlling the distribution of residual stress caused by the high cooling rate and temperature gradient is the key to regulating the performance of devices obtained from additive manufacturing. In this work, the effects of the interlayer scanning angle on the residual stress in Ti–6Al–4V parts manufactured by selective laser melting were investigated by finite element simulations. We studied how changing the interlayer deflection angle alleviated residual stress under different energy inputs. The results showed that the residual stress in the z-direction was reduced by the deflection angle of 67° and 90°, and the non-uniform distribution of residual stress was reduced by a deflection angle of 67°. The combination of a chessboard pattern and interlayer deflection angle greatly alleviated the generation of residual stress. This work has important guiding significance for the additive manufacturing design of high-quality and high-performance titanium alloy devices.

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Literature
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Metadata
Title
Novel Strategy for Reducing Residual Stress in Titanium Alloy Parts Obtained via Additive Manufacturing
Authors
Xinfa Sun
Yucheng Zhao
Weiming Yang
Wenyu Li
Dengfeng Yang
Haishun Liu
Publication date
13-05-2022
Publisher
The Korean Institute of Metals and Materials
Published in
Metals and Materials International / Issue 12/2022
Print ISSN: 1598-9623
Electronic ISSN: 2005-4149
DOI
https://doi.org/10.1007/s12540-022-01179-8

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