Optimization of ultimate tensile strength of welded Inconel 625 and duplex 2205

  • S. Madhankumar Department of Mechatronics Engineering, Sri Krishna College of Engineering and Technology, Coimbatore, India, 641008 Phone: +91 8344483282; Fax: 0422-2678012
  • K. Manonmani Department of Mechanical Engineering, Alagappa Chettiar Government College of Engineering and Technology, Karaikudi, India, 630004
  • V. Karthickeyan Deparment of Mechanical Engineering, Sri Krishna College of Engineering and Technology, Coimbatore, India, 641008
  • N. Balaji Deparment of Mechanical Engineering, Sri Krishna College of Engineering and Technology, Coimbatore, India, 641008
Keywords: Laser beam welding, Inconel 625 alloy, duplex 2205, ultimate tensile strength, microstructure

Abstract

The ultimate strength is an important property of any material for the manufacturing of components. This paper utilized the laser beam welding (LBW), due to its smaller dimension, which produces lesser distortion and process velocity is higher. Inconel 625 alloy and duplex 2205 stainless steel is having higher strength and corrosive resistance properties. Due to the above-mentioned properties, it could be used in oil and gas storage containers, marine and geothermal applications. This research work presents an investigation of various input variable effects on the output variable (ultimate tensile strength) in LBW for dissimilar materials namely, Inconel 625 alloy and duplex 2205 stainless steel. The input variables for this research are the power of a laser, welding speed, and focal position. The experimental runs are developed with the help of design of experiment (DOE) and utilized statistical design expert software. The ultimate tensile strength on different runs is measured using a universal tensile testing machine. Then from a response surface methodology and ANOVA, the optimum value of ultimate tensile strength was determined to maximize the weld joint and bead geometry. Finally, the confirmation test was carried out, it reveals the maximum error of 0.912% with the predicted value. In addition, the microstructure of the weld beads was examined using optical microscopy.

Published
2021-03-08
How to Cite
Madhankumar, S., Manonmani, K., Karthickeyan, V., & Balaji, N. (2021). Optimization of ultimate tensile strength of welded Inconel 625 and duplex 2205. Journal of Mechanical Engineering and Sciences, 15(1), 7715 - 7728. https://doi.org/10.15282/jmes.15.1.2021.08.0608
Section
Article