EFFECTS OF ULTRASOUND VIBRATION ON MICROSTRUCTURE SUBMERGED ARC WELDING

Authors

  • Bui Duy Khanh Department of Material Processing Technology, Faculty of Mechanical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam
  • Pham Quang Trung Department of Material Processing Technology, Faculty of Mechanical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam
  • Thanh-Hai Nguyen Department of Material Processing Technology, Faculty of Mechnical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam

DOI:

https://doi.org/10.11113/aej.v12.17858

Keywords:

Ultrasonic vibration, Arc weld structure, Grain size, Frequency of 20kHz, Mechanical properties.

Abstract

The microstructure of the weld influences its quality, in which the grain size is one of the most important parameters affecting the mechanical properties of the weld. To change the grain size, the cooling process of the weld zone must be carefully controlled. Customarily, the weld zone is cooled down without post-treatment after the welding process, so the microstructure of the weld is similar to that of the casting. In this study, ultrasonic vibrations are used in the welding process from the beginning of the welding process until the part is completely cooled. Using the ultrasonic waves with frequency of 20kHz, power of 1500W, the researchers analyzed the weld microstructure, comparing the welds with and without ultrasonic vibrations. The results show that when ultrasonic vibrations are utilized, the grain size is changed and the mechanical properties are significantly improved.

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Published

2022-08-31

How to Cite

Khanh, B. D. ., Trung, P. Q. ., & Nguyen, T.-H. . (2022). EFFECTS OF ULTRASOUND VIBRATION ON MICROSTRUCTURE SUBMERGED ARC WELDING. ASEAN Engineering Journal, 12(3), 57-61. https://doi.org/10.11113/aej.v12.17858

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