

Influence of physical properties of weld metal on hydrogen diffusion into the heat affected zone of heterogeneous welded joints
https://doi.org/10.22349/1994-6716-2023-116-4-169-178
Abstract
The paper presents the analytical solution of one-dimensional problem on hydrogen diffusion in butt heterogeneous welded joints. Such parameters as welded joint thickness, weld thickness, diffusion coefficients, solubilities and initial concentrations of hydrogen in the weld metal and base metal have been taken into account. The effects of microstructure on hydrogen kinetics in homogeneous and heterogeneous welded joints are considered. It is shown that hydrogen concentration in the heat affected zone (HAZ) to a great extent depends on the ratios of the initial concentrations, hydrogen diffusion coefficients and solubilities in the weld metal to those in the base metal. The concentration of hydrogen in the HAZ decreases by three orders of magnitude when welding martensitic steel with austenitic electrodes as compared to homogeneous joints.
About the Authors
Y. AldaieeRussian Federation
29 Polytechnicheskaya St, 195251 St Petersburg
V. A. Karkhin
Russian Federation
Dr Sc. (Eng)
29 Polytechnicheskaya St, 195251 St Petersburg
P. N. Khomich
Russian Federation
Cand Sc. (Eng)
29 Polytechnicheskaya St, 195251 St Petersburg
References
1. Pokhodnya, I.K., Yavdoshchin, I.R., Paltsevich, A.P., Shvachko, V.I., Kotelchuk, A.S., Metallurgiya dugovoy svarki. Vzaimodeystvie metalla s gazami [Metallurgy of arc welding. Interaction of metal with gases], Kiev: Naukova Dumka, 2004.
2. Makarov, E.L., Yakushin, B.F., Teoriya svarivaemosti staley i splavov [Theory of weldability of steels and alloys], Moscow: Bauman Moscow State Technical University, 2014.
3. Lippold, J.C., Welding metallurgy and weldability, New York: John Wiley and Sons, 2015.
4. Andersson, B.A.B., Diffusion and trapping of hydrogen in a bead-on-plate weld, Transactions of the ASME. Journal of Engineering Materials and Technology, 1980, V. 102, No 1, pp. 64–72.
5. Karkhin , V.A., Mnushkin, O.S., Raschetnaya metodika vybora konstruktivno-tekhnologicheskogo varianta svarnogo soedineniya s zadannoy soprotivlyaemostyu obrazovaniyu kholodnykh treshchin. 2: Raschet sostoyaniya svarnogo soedineniya i eksperimentalnaya proverka metodiki [A calculation method of selecting the design and technological variant of the welded joint of a specific cold cracking resistance. 2: Calculation of the state of the welded joint and experimental verification of the method], Svarochnoe proizvodstvo, 1988, No 5, pp. 33–35.
6. Fjær, H.G., Aas, S.K., Olden, V., Lindholm, D., Akselsen, O.M., Simulation of multipass welding of a steel pipe including modelling of hydrogen diffusion and fracture mechanics assessment, Sommitsch, C., Enzinger, N. (Eds.), Mathematical Modelling of Weld Phenomena 10, Graz: Verlag der Technischen Universität Graz, 2013, pp. 371–399.
7. Karkhin, V.A., Levchenko, A.M., Khomich, P.N., Model diffuzii vodoroda pri svarke visokoprochnykh staley [Hydrogen diffusion model at welding high-strength steels], Svarochnoe proizvodstvo, 2020, No 10, pp. 3–15.
8. Karkhin, V.A., Aldaiee, Y., Starobinsky, E.B., Levchenko, A.M., Analiz raspredeleniya vodoroda v neodnorodnykh svarnykh soedineniyakh [Analysis of hydrogen distribution in heterogeneous welded joints], Aktualnye voprosy i peredovye tekhnologii svarki v nauke i promyshlennosti: Proceedings of the International conference, Mogilev: Belarussian-Russian University, 24–25 November, 2022, pp. 84–90.
9. Carslaw, H.S., Jaeger, J.C., Teploprovodnost tverdykh tel [Conduction of heat in solids], Moscow: Nauka, 1964.
10. Karkhin, V.A., Marx, O.Y., Analiz vliyaniya raznorodnosti svarnogo soedineniya na kontsentratsiyu vodoroda v zone termicheskogo vliyaniya [Analysis of influence of welded joint heterogeneity on hydrogen concentration in heat affected zone], Avtomaticheskaya svarka, 1994, No 2, pp. 9–14.
11. Karkhin, V.A., Aldaiee, Y., Levchenko, A.M., Koeffitsient diffuzii vodoroda v svarivaemykh stalyakh [Hydrogen diffusion coefficient in welded steels], Svarka i diagnostika, 2021, No 6, pp. 20–27.
12. Aldaiee, Y., Karkhin, V.A., Levchenko, A.M., Rastvorimost vodoroda v svarivaemykh stalyakh [Solubility of hydrogen in welded steels], Svarka i diagnostika, 2022, No 3, pp. 25–31.
Review
For citations:
Aldaiee Y., Karkhin V.A., Khomich P.N. Influence of physical properties of weld metal on hydrogen diffusion into the heat affected zone of heterogeneous welded joints. Voprosy Materialovedeniya. 2023;(4(116)):169-178. (In Russ.) https://doi.org/10.22349/1994-6716-2023-116-4-169-178