Improving the Weldability of Nickel-Based Superalloy by High Frequency Vibration
The objective of this paper is to discuss the weldability of Mar-M-004 nickel-based alloy by simultaneous proceeding vibration. Three kinds of vibration modes were chosen to compare the results, including high frequency vibration, subresonant and without vibration. We used x-ray diffraction (XRD) to quantize the residual stress of each sample, also the microstructure and crystal structure were investigated by using optical microscopes.
The results showed that the grain size will get refined after vibration welding, especially in high frequency vibration. From XRD and microstructure results, by using the high frequency vibration method, there has a significant effect of having lowest residual stress and lowest stress relaxation; furthermore, the formation of cracks was also inhibited and having the shortest crack length.
S. Kou, Welding metallurgy, 2nd Ed., A John Wiey & Sons,Inc., New Jersey, pp. 263-300, 2003.
M. H. Haafkens and G. H. Matthey, “A new approach to the weldability of nickel-base as-cast and powder metallurgy superalloys,” Welding Journal, vol. 61, no. 1, pp. 25-30, 1982.
C. A. Walker, A. J. Waddell, and D. J. Johnston, “Vibratory stress relief – an investigation of the underlying process,” Process Institution Mechanical Engineers, vol. 209, pp. 51-58, 1995.
S. Weiss and S. Baker, “Vibrational residual stress relief in a plain carbon steel weldment,” Welding Journal, vol. 55, 1976.
M. Lax, “Stress relief technology”, Bonal Technology, lnc, 1986.
W. Wu, “Method for relieving residual stress in an object,” US 2009 /0049912 Al, 2009
Submission of a manuscript implies: that the work described has not been published before that it is not under consideration for publication elsewhere; that if and when the manuscript is accepted for publication. Authors can retain copyright of their article with no restrictions. Also, author can post the final, peer-reviewed manuscript version (postprint) to any repository or website.
Since Oct. 01, 2015, PETI will publish new articles with Creative Commons Attribution Non-Commercial License, under The Creative Commons Attribution Non-Commercial 4.0 International (CC BY-NC 4.0) License.
The Creative Commons Attribution Non-Commercial (CC-BY-NC) License permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes