The Paton Welding Journal, 2005, №09

2005 №09 (12)

2005 №09 (02)

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The Paton Welding Journal, 2005, #9, 2-9 pages

Inheritance of structure-oriented state of metallic materials by welded joints

K.A. Yushchenko¹, O.P. Karasevskaya², S.S. Kotenko¹, E.P. Polishchuk¹, V.S. Savchenko¹, B.A. Zadery¹

¹E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.
²G.V, Kurdyumov Institute of Metal Physics, NASU, Kiev, Ukraine

Abstract
Peculiarities of fusion welding of textured and oriented-solidification polycrystalline and single-crystal molybdenum, tungsten and nickel alloys are considered. X-ray examination methods were used to generate data on inheriting the structural and crystallographic orientation in different zones of a welded joint. It was found that in solidification of the weld pool the epitaxial growth of crystalline grains of the weld metal from the substrate (surface of melted grains of the fusion zone) might result in the weld metal reproducing the crystallographic orientation of structural elements of the initial material. As proved, the welded joint may retain the crystallographic orientation and structural state close to those of the base metal
Keywords: molybdenum, tungsten, nickel alloy, polycrystal, single crystal, texture, welded joint, X-ray method, crystallographic and structural orientation

References

1. Palme, R. (1971) Effect of deformation textures on properties of refractory metals. In: New refractory metallic materials. Moscow: Mir.
2. Gaumann, M., Bezencon, C., Kurz, W. (2001) Columnar to equiaxed transition in solidification processing. Sci. and Techn. of Advan. Materials, 2, 185–191.
3. Krivoglaz, M.A. (1996) X-ray and neutron diffraction in nonideal crystals. Berlin: Springer.
4. Karasevskaya, O.P. (1999) Orientation X-ray experimental method for phase analysis of polycrystals. Met. Phys, and Techn., 21(8), 34–39.
5. Fewster, P.F. (2000) Commission on powder diffraction: Int. union on crystallography, microstructure of materials. Newsletter, 24 Dec., 17.
6. Karasevskaya, O.P. (2000) Multi-level structures. Metallofizika i Nov. Tekhnologii, 22(11), 44–53.
7. Trefilov, V.I., Milman, Yu.V., Ivashchenko, R.K. et al. (1983) Structure, texture and mechanical properties of deformed molybdenum alloys. Ed. by V.I. Trefilov. Kiev: Naukova Dumka.
8. Zaderv, B.A., Kotenko, S.S., Marinchenko, A.E. et al. (2002) Formation of crystallographic texture in metal of welded joints on molybdenum alloys. The Paton Welding J., 11, 12–16.
9. Schmid, E., Boas, V. (1938) Plasticity of crystals, metallic crystals in particular. Moscow: GONTI KKTP SSSR.

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Suggested Citation

K.A. Yushchenko, O.P. Karasevskaya, S.S. Kotenko, E.P. Polishchuk, V.S. Savchenko, B.A. Zadery (2005) Inheritance of structure-oriented state of metallic materials by welded joints. The Paton Welding J., 09, 2-9.

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