Effects of process parameters in gas tungsten arc welding of thin titanium plates

Document Type : Article

Authors

1 a. Institute of Research and Development, Duy Tan University, 03 Quang Trung, Da Nang, 550000, Vietnam. b. Faculty of Mechanical Engineering, Le Quy Don Technical University, 236 Hoang Quoc Viet Street, Hanoi, 100000, Vietnam

2 Faculty of Mechanical Engineering, Le Quy Don Technical University, 236 Hoang Quoc Viet Street, Hanoi, 100000, Vietnam

Abstract

This work systematically investigated the effects of process parameters on the technological responses, including the tensile force TF and average micro hardness AMH in the gas tungsten arc welding (GTAW) of titanium. Controlled parameters are the welding current I, gas flow rate F, and arc gap G. The objective of this work is to improve the tensile strength with respect to micro hardness constraints. A GTAW welding machine was adopted in conjunction with the Box-Behnken matrix to conduct experimental trails. The nonlinear relationships between welding parameters and responses were developed using response surface method (RSM). Subsequently, an optimization technique entitled desirability approach (DA) was used to solve the trade-off analysis between responses considered and find the optimal parameters. The conformity test was performed in order to evaluate the accuracy of optimizing values. The results showed that the welding current had the greatest influence on the outputs considered, compared to other factors. The measured improvements using optimal parameters of tensile force and average micro hardness are approximately 4.10% and 6.12% in comparison with initial settings. A hybrid approach comprising RSM and desirability approach can be considered as an effective method for parameter optimization and observation of reliable values in GTAW processes.

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References

References:
1. Kurtulmus, M. "Effects of welding parameters on penetration depth in mild steels A-TIG welding", Sci. Iran., 26(3), pp. 1400-1404 (2019). DOI: 10.24200/SCI.2018.20145.
2. Moghaddam, M.A., Golmezerji, R., and Kolahan, F. "Simultaneous optimization of joint edge geometry and process parameters in gas metal arc welding using integrated ANN - PSO approach", Sci. Iran., 24(1), pp. 260-273 (2017).
3. Pamnani, R., Vasudevan, M., Jayakumar, T., and Vasantharaja, P. "Development of activated  flux, optimization of welding parameters and characterization of weld joint for DMR-249A shipbuilding steel", Trans Indian Inst. Met., 70(1), pp. 49-57 (2017).
4. Chandrasekar, G., Kailasanathan, C., Verma, D.K., and Nandagopal, K. "Optimization of welding parameters, influence of activating flux and investigation on the mechanical and metallurgical properties of activated TIG weldments of AISI 316 L stainless steel", Trans Indian Inst. Met., 70(3), pp. 671-684 (2017).
5. Korra, N.N., Vasudevan, M., and Balasubramanian, K.R. "Optimization of A-TIG welding of duplex stainless steel alloy 2205 based on response surface methodology and experimental validation", Proc. Inst. Mech. Eng. Pt. L J. Mater. Des. Appl., 230(4), pp. 837-864 (2016).
6. Pamnani, R., Vasudevan, M., Vasantharaja, P., and Jayakumar, T. "Optimization of A-GTAW welding parameters for naval steel (DMR 249 A) by design of experiments approach", Proc. Inst. Mech. Eng. Pt. L J. Mater. Des. Appl., 231(3), pp. 320-331 (2017).
7. Vidyarthy, R.S. and Dwivedi, D.K. "Activating  flux tungsten inert gas welding for enhanced weld penetration", J. Manuf. Process, 22, pp. 211-228 (2016).
8. Bhattacharya, A. and Singla, S. "Dissimilar GTAW between AISI 304 and AISI 4340 steel: Multi-response optimization by analytic hierarchy process", Proc. Inst. Mech. Eng. E, 231(4), pp. 824-835 (2017).
9. Vasantharaja, P. and Vasudevan, M. "Optimization of A-TIG welding process parameters for RAFM steel using response surface methodology", Proc. Inst. Mech. Eng. Pt. L J. Mater. Des. Appl., 232(2), pp. 121-136 (2018).
10. Vidyarthy, R.S., Dwivedi, D.K., and Muthukumaran, V. "Optimization of A-TIG process parameters using response surface methodology", Mater Manuf. Proces, 33(7), pp. 709-717 (2018).
11. Ahmadi, E. and Ebrahimi, A.R. "Welding of 316L austenitic stainless steel with activated tungsten inert gas process", J. Mater. Eng. Perform., 24(2), pp. 1065-1071 (2015).
12. Joseph, J. and Muthukumaran, S. "Optimization of activated TIG welding parameters for improving weld joint strength of AISI 4135 PM steel by genetic algorithm and simulated annealing", Int. J. Adv. Manuf. Technol., 93(1-4), pp. 23-34 (2017).
13. Pichumani, S., Srinivasan, R., and Ramamoorthi, V. "Mechanical properties, thermal profiles, and microstructural characteristics of Al-8 %SiC composite welded using pulsed current TIG welding", J. Mech. Sci. Technol., 32(8), pp. 1713-1723 (2018).
14. Vidyarthy, R.S., Dwivedi, D.K., and Vasudevan, M. "Influence of M-TIG and A-TIG welding process on microstructure and mechanical behavior of 409 ferritic stainless steel", J. Mater. Eng. Perform., 26(3), pp. 1391-1403 (2017).
15. Shen, J., Li, S., Zhai. D., Wen, L., Liu, K., and Dai, Y. "Effects of SiC on the Strengthening Activated Tungsten Inert Gas (SA-TIG) welded of magnesium alloy", Mater Manuf Proces, 28(11), pp. 1240-1247 (2013).
16. Goyal, A. and Garg, R.K. "Modeling and optimization of friction stir welding parameters in joining 5086 H32 aluminium alloy", Sci. Iran, 26(4), pp. 2407-2417 (2019). DOI: 10.24200/SCI.2018.5525.1325.
17. Mir Mohammad Hosseini, F., Ebadi, T., Eslami, A., et al. "Investigation of geotechnical properties of clayey soils contaminated with gasoil using Response Surface Methodology (RSM)", Sci. Iran, 26(3), pp. 1122-1134 (2019). DOI: 10.24200/SCI.2017.4574.
18. Tang, L.N., Ma, Y.Z., Wang, J.J., et al. "Robust parameter design of supply chain inventory policy considering the uncertainty of demand and lead time", Sci. Iran, 26(5), pp. 2971-2987 (2018). DOI:10.24200/SCI.2018.5205.1217.
19. Rajakumar, S. and Balasubramanian, V. "Diffusion bonding of titanium and AA 7075 aluminum alloy dissimilar joints-process modeling and optimization using desirability approach", Int. J. Adv. Manuf. Technol., 86(1-4), pp. 1095-1112 (2016).
Scientia Iranica
Volume 27, Issue 3
Transactions on Mechanical Engineering (B)
May and June 2020
Pages 1313-1323

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History

  • Receive Date: 17 June 2018
  • Revise Date: 13 October 2018
  • Accept Date: 31 December 2018

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