The Effect of Welding Positions on the Weldability of X20CrMoV11-1 Steels

Abstract

In the study, mechanical properties of martensitic steel X20CrMoV11-1 was investigated after being welded using Tungsten Inert Gas (GTAW) welding method at different weld positions (PC and PJ-EN 6947). The X20CrMoV11-1 steels have been widely used in thermal power plant applications in combustion chambers and other high-temperature parts. These materials experience extremely high internal pressure at the service conditions. WCrMoV12 Si was used as the filler metal in the welding. The GTAW welding process was conducted in a controlled manner and all the parameters used during the process was monitored. The post welding heat treatment was applied in order to eliminate the variations in the hardness of the welded materials. The samples were characterized using tensile, bending, hardness, and notch impact tests. Macro photographs were taken from the samples to observe the transition areas. The results indicated that the mechanical properties obtained from the samples welded in PC position were higher than those obtained from PJ position.

Keywords:

Weld; Welding positions; Mechanical Tests; Heat Input

DOI: 10.17350/HJSE19030000068

Full Text: page_white_acrobat.png

Research Article

Downloads

Download data is not yet available.

References

1. Bazazi, A.A., Evolution of Microstructure during Long-term Creep of a Tempered Martensite Ferritic Steel. 2009: Cuvillier.

2. Urzynicok, M., K. Kwieciński, and M. Szubryt, Experience in the welding of martensitic steel VM12-SHC. Welding International, 2013. 27(4): p. 249-254.

3. Qian, Y. and J. Zhao, Inf luences of local PWHT from different criteria at home and abroad on the residual stress of the under-matching welded joint. International Journal of Pressure Vessels and Piping, 2017. 154: p. 11-16.

4. Khalaj, G., Pouraliakbar, H., Jandaghi M.R., Gholami A. Microalloyed steel welds by HF-ERW technique: Novel PWHT cycles, microstructure evolution and mechanical properties enhancement. International Journal of Pressure Vessels and Piping, 2017(152): p. 15-26.

5. Loots, R., Susceptibility of service exposed creep resistant materials to reheat cracking during repair welding, University of Pretoria, 2003.

6. Figueirôa, D.W., Pigozzo, I.O., Gonçalves e Silva, R.H., Abreu Santos T.F., Filho S.L.U. Inf luence of welding position and parameters in orbital tig welding applied to low-carbon steel pipes. Welding International, 2017. 31(8): p. 583-590.

7. Muzaka, K., Park, M., Lee, J.P., Jin, B., Lee B.R., Soo Kim, W.Y. A Study on Prediction of Welding Quality Using Mahalanobis Distance Method by Optimizing Welding Current for A Vertical-position Welding. Procedia Engineering, 2017. 174: p. 60-67.

8. Yan, Z., Xu, D., Li, Y. A visual servoing system for the torch alignment to initial welding position. Intelligent Robotics and Applications, 2008: p. 697-706.

9. Bermejo, M.V., Karlsson L., Svensson, L.E., Hurtig, K., Rasmuson, H., Frodigh, M., Bengtsson, P., Effect of welding position on properties of duplex and super duplex stainless steel circumferential welds. Welding in the World, 2015. 59(5): p. 693-703.

10.Pasternak, J., S. Fudali, Własności oraz doświadczenia w spawaniu stali przeznaczonych na elementy ciśnieniowe kotłów o parametrach nadkrytycznych. XVI Międzynarodowa Konferencja Spawanie w Energetyce, Opole-Jarnołtówek, 2008.

11.Yurioka, N., T. Kasuya, A chart method to determine necessary preheat in steel welding. Welding in the World/Le Soudage dans le Monde, 1995. 5(35): p. 327-334.

12. Funderburk, R.S., A look at input. Welding Innovation, 1999. 16(1).

13. Rao, T.R., Metal casting: Principles and practice, New Age International, 2007.

14 .Kurgan, N., Sun, Y., Cicek, B., Ahlatci, H., Production of 316L stainless steel implant materials by powder metallurgy and investigation of their wear properties. Chinese science bulletin, 2012. 57(15): p. 1873-1878.

15. Vander Voort, G.F., Etching isothermally treated steels. Heat Treating Progress, 2001. 1(2): p. 25-32.

16.Jin, B., M. Soeda, K. Oshima, Control of weldpool width and cooling time in TIG welding using a neural network model. Welding international, 1996. 10(8): p. 614-621.

17.Grong, O., D.K. Matlock, Microstructural development in mild and low-alloy steel weld metals. International Metals Reviews, 1986. 31(1): p. 27-48.

18.SA, D., Inclusion formation and microstructure evolution in low alloy steel welds. ISIJ international, 2002. 42(12): p. 1344-1353.

19.Hu, F., P. Hodgson, K. Wu, Acceleration of the super bainite transformation through a coarse austenite grain size. Materials letters, 2014. 122: p. 240-243.

20. Santos,T.F., Torres, Edwar A. Vilela, José M. C. Andrade, Margareth S. Cota, André B., Caracterização Microestrutural De Aços Baixo Carbono Por Microscopia De Força Atômica (Microstructural Characterization Of Low Carbon Steels By Atomic Force Microscopy). Revista Latinoamericana de Metalurgia y Materiales, 2014: p. 118-133.

21.Masoumi, F., D. Shahriari, Effects of welding positions on mechanical properties and microstructure in weld metal of high strength steel, Advances in Materials and Processing Technologies 83(2009) p. 1121-1127.

22. Gomes Moojen, R., Machado, I.G., Mazzaferro J.A.E., Gonzalez, A.R., Cooling rate effects in the welding of API 5L-X80 steel. Welding International, 2017. 31(2): p. 100-110.

23. Kasuya, T., N. Yurioka, M. Okumura, Methods for predicting maximum hardness of heat-affected zone and selecting necessary preheat temperature for steel welding. Nippon Steel Technical Report, 1995: p. 7-14.

24. Graville, B., Weld Cooling Rates and Heat-Affected Zone Hardness in a C Steel. Welding Journal, 1973. 52(9): p. 377-385.

25. Abd El-Rahman Abd El-Salam, M., I. El-Mahallawi, M. El-Koussy, Inf luence of heat input and post-weld heat treatment on boiler steel P91 (9Cr–1Mo–V–Nb) weld joints Part 1–Microstructure. International Heat Treatment and Surface Engineering, 2013. 7(1): p. 23-31.

26. Kim, C.M., J.B. Lee, J.Y. Yoo. A study on the metallurgical and mechanical characteristics of the weld joint of X80 Steel. The Fifteenth International Offshore and Polar Engineering Conference. , 19-24 June, Seoul, Korea, p. 158-162, 2005.

27.Zhu, Z., Structure property correlation in the weld HAZ of high strength line pipe steels, University Of Wollongong Thesis Collection, 2013.

28.Nicholas, J., Abson. The prediction of maximum HAZ hardness in various regions of multiple pass welds, 17th International Conference Computer Technology in Welding and Engineering, University of Cranfield, 18-19 June, 2008.
Published
2017-12-28
How to Cite
Cicek, B., Gundogdu Is, E., Gumus, E., & Topuz, P. (2017). The Effect of Welding Positions on the Weldability of X20CrMoV11-1 Steels. Hittite Journal of Science & Engineering, 5(1), 75-83. Retrieved from https://www.hjse.hitit.edu.tr/hjse/index.php/HJSE/article/view/HJSE19030000068
Section
SCIENCE