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Volume 24
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10.3390/s24237457
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Effect of Post-Heat Treatment on the Mechanical and Residual Stress Behavior of Pulsed Wave S316L Fabricated by Directed Energy Deposition

by
Zhou Yan
1,2,3,
Jia Guo
2,3,4,* and
Xi Zou
5
1
School of Information Engineering, Hubei University of Economics, Wuhan 430205, China
2
Hubei Key Laboratory of Digital Finance Innovation, Hubei University of Economics, Wuhan 430205, China
3
Hubei Internet Finance Information Engineering Technology Research Center, Hubei University of Economics, Wuhan 430205, China
4
Faculty of Computer and Information Sciences, Hosei University, Tokyo 102-8160, Japan
5
Mechanical and Electrical Engineering College, Hunan University of Science and Technology, Xiangtan 411201, China
*
Author to whom correspondence should be addressed.
Sensors 2024, 24(23), 7457; https://doi.org/10.3390/s24237457
Submission received: 29 October 2024 / Revised: 20 November 2024 / Accepted: 20 November 2024 / Published: 22 November 2024
(This article belongs to the Section Optical Sensors)
Versions Notes

Abstract

The influence of annealing at various temperatures on the phase stability and microstructure of pulsed-wave laser mode (PW) 316L stainless steel fabricated via Directed Energy Deposition (DED) was systematically investigated. The microstructural alterations resulting from heat treatment were examined to clarify their influence on the mechanical properties of the specimens subjected to tensile loading. The results showed that cell size increased with annealing temperature, with the cellular microstructure disappearing at higher temperatures (T ≥ 1000 °C). A decrease in the mechanical strength of the specimens was observed as annealing temperature increased. Additionally, the influence of different laser pulse frequencies and duty cycles on residual stresses was examined, revealing that moderate laser frequencies and duty cycles effectively reduced residual stress levels.
Keywords: DED additive manufacturing; microstructure; mechanical properties; residual stress DED additive manufacturing; microstructure; mechanical properties; residual stress

Share and Cite

MDPI and ACS Style

Yan, Z.; Guo, J.; Zou, X. Effect of Post-Heat Treatment on the Mechanical and Residual Stress Behavior of Pulsed Wave S316L Fabricated by Directed Energy Deposition. Sensors 2024, 24, 7457. https://doi.org/10.3390/s24237457

AMA Style

Yan Z, Guo J, Zou X. Effect of Post-Heat Treatment on the Mechanical and Residual Stress Behavior of Pulsed Wave S316L Fabricated by Directed Energy Deposition. Sensors. 2024; 24(23):7457. https://doi.org/10.3390/s24237457

Chicago/Turabian Style

Yan, Zhou, Jia Guo, and Xi Zou. 2024. "Effect of Post-Heat Treatment on the Mechanical and Residual Stress Behavior of Pulsed Wave S316L Fabricated by Directed Energy Deposition" Sensors 24, no. 23: 7457. https://doi.org/10.3390/s24237457

APA Style

Yan, Z., Guo, J., & Zou, X. (2024). Effect of Post-Heat Treatment on the Mechanical and Residual Stress Behavior of Pulsed Wave S316L Fabricated by Directed Energy Deposition. Sensors, 24(23), 7457. https://doi.org/10.3390/s24237457

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