The Paton Welding Journal, 2006, №02

2006 №02 (02)

2006 №02 (04)

---

The Paton Welding Journal, 2006, #2, 11-15 pages

Calculation of the kinetics of diffusion phase transformations in low-alloyed steels in beam welding

U. Dilthey¹, A.V. Gumenyuk¹, G.A. Turichin²

¹Rheinisch-Westfaellische HTS, Aachen, Germany
²St.-Petersburg State Polytechnic University, St.-Petersburg, Russia

Abstract
Parametric description of TTT- and CCT-diagrams has been developed on the basis of the results of growth of cementite inclusions and redistribution of carbon in the ferritic phase under non-equilibrium conditions for welding of steels at high cooling rates. The model has been developed to estimate the effect of initial structure of a material and parameters of the thermal cycles on the transformation diagrams.
Keywords: arc welding, low-alloyed steel, thermal cycles, diffusion, phase transformation kinetics

References

1. (1991) Atlas of time-temperature diagrams for irons and steels. Ed. Vander Voort G.F. Materials Park, USA. ASM Int.
2. Seyffarth, P., Meyer, B., Scharff, A. (1992) Grosser Atlas Schweiss-ZTU-Schaubilder. Duesseldorf: DVS.
3. Staley, J.T. (1987) Quench factor analysis of aluminium alloys. Mater. Sci. and Technol., 3, 923--934.
4. Dilthey, U., Trube, St. (1995) Schweisstechnische Fertigungsverfahren. Duesseldorf: VDI.
5. Matsuda, H., Bhadeshia, H.K., Avrami, D.H. (2003) Theory for transformation from non-uniform austenite grain structures. Mater. Sci. and Technol., 19, 1330–1334.
6. Grong, O. (1994) Metallurgical modelling of welding. Cambridge: IM.
7. Cahn, J.W. (1956) The kinetic of the grain boundary nucleation reactions. Acta Metallurg., 4, 449–459.
8. Lifshitz, I.M., Slyozov, V.V. (1961) The kinetics of precipitation from supersaturated solid solutions. J. Phys. And Chem. Sol., 19, 35–50.
9. Wagner, C. (1961) Theorie der Alterung von Niederschlagen durch Umloesen. Z. Elektrochemie, 65, 581–591.
10. Lyubov, B.Ya (1969) Kinetic theory of phase transformations. Moscow: Metallurgiya.
11. Lopota, V., Turichin, G., Valdaitseva, E. et al. (2004) Theoretical investigation and modelling of intermetallic inclusions formation in laser treatment of Al-Mg alloys. SPIE Proc., 5399, 197–203.
12. Prokhorov, N.N. (1976) Physical processes in metals during welding. Vol. 1. Moscow: Metallurgiya.
13. Tikhonov, A.N., Samarsky, A.A. (1977) Equations of mathematical physics. Moscow: Nauka.
14. Dilthey, U., Bohm, St., Welters, T. et al. (1998) EBSIM – a simulation tool for electron beam welding. In: Proc. of CISFEL’98 (Toulon, France, June 15–19, 1998). Paris: Institut de Soudure.
15. Umansky, Ya.S., Skakov, Yu.A. (1978) Physics of metals. Moscow: Atomizdat.
16. Adil, G.K., Bhole, S.D. (1992) HAZ hardness and microstructure predictions in arc welded steels. Can. Met. Quart. J., 31, 151–157.

---

Suggested Citation

U. Dilthey, A.V. Gumenyuk, G.A. Turichin (2006) Calculation of the kinetics of diffusion phase transformations in low-alloyed steels in beam welding. The Paton Welding J., 02, 11-15.

---