The Paton Welding Journal, 2006, №01

2006 №01 (02)

2006 №01 (04)

---

The Paton Welding Journal, 2006, #1, 16-23 pages

Effect of scandium additions on structure-phase condition of weld metal produced by welding aluminium alloy 1460

L.I. Markashova, G.M. Grigorenko, A.Ya. Ishchenko, A.V. Lozovskaya, O.S. Kushnaryova, T.A. Alekseenko, A.A. Chajka

E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.

Abstract
Microstructure, element and phase compositions of weld metal of the joints produced by arc welding on alloy 1460 using filler wires Sv1201 and Sv1201 + Sc were studied. Main mechanisms of the effect of scandium on structure formation, chemical heterogeneity and mechanical properties of the weld metal were revealed. It is shown that scandium addition leads to grain refining, extra saturation of solid solution with scandium, formation of dispersed particles in the bulk of grains and complex-composition eutectic. The weld metal in this case has an increased strength.
Keywords: argon arc welding, aluminium alloy, scandiumcontaining filler wire, structure, phase components, solid solution, chemical heterogeneity, intermetallics, hardness

References

1. Fridlyander, I.N. (2000) Aluminium alloys in aircraft during the periods of 1970–1999 and 2000–2015. In: Transact. Of 5th Session of the Sci. Council on New Materials of the Int. Ass. of AS on Problems of Advanced Materials Science. Kiev: Naukova Dumka.
2. Fridlyander, I.N. (1998) Aluminium alloys in aircraft engineering. In: Transact. of 3rd Session of the Sci. Council on New Materials of the Int. Ass. of AS on Problems of Advanced Materials Science. Kiev: Naukova Dumka.
3. Furukawa, M., Miura, Y., Nemoto, M. (1987) Temperature and strain rate dependencies of yield stress of an Al-Cu-Li-Mg-Zr alloy. Transact. of Jap. Inst. Metals, 28, 655–665.
4. Ryazantsev, V.I., Fedoseev, V.A. (1994) Mechanical properties of welded joints of Al--Cu system aluminium alloys. Svarochn. Proizvodstvo, 12, 4–7.
5. Ando, S., Ohkubo, M. (1992) Weldability of high strength aluminium alloy by electron beam welding. J. Light MetalWelding and Construction, 30(1), 12--18.
6. (1992) Aluminium-lithium alloys. Structure and properties. Ed. by I.N. Fridlyander et al. Kiev: Naukova Dumka.
7. Kajgorodova, L.I., Romanova, R.R., Drits, A.M. et al. (1992) Natural ageing of Al-Li-Cu-Zr system alloy. Tekhnologiya Lyog. Splavov, 1, 34–38.
8. O’Dowd, M.E., Ruch, W., Starke, E.A. (1987) Dependence of elastic modulus on microstructure in 2090-type alloys. J. de Phys., 48(9), 565–576.
9. Ball, H.D., Lloyd, D.J. (1985) Particles apparently exhibiting fivefold symmetry in Al-Li-Cu alloys. Sci. Met., 19, 1065–1068.
10. Gufnghui, M., Huasyun, Y., Delin, P. et al. (2000) Fraction and phase spacing of fibrous intermetallic -LiAl in hypoeutectic Al-Li alloys by unidirectional solidification. Metallofizika. Nov. Tekhnologii, 22(4), 58–61.

---

Suggested Citation

L.I. Markashova, G.M. Grigorenko, A.Ya. Ishchenko, A.V. Lozovskaya, O.S. Kushnaryova, T.A. Alekseenko, A.A. Chajka (2006) Effect of scandium additions on structure-phase condition of weld metal produced by welding aluminium alloy 1460 ... 16. The Paton Welding J., 01, 16-23.

---