Abstract
The chemical composition and microstructure of an AISI 321/Cu/Ta/Ti welded joint prepared by carbon dioxide laser is studied in this work. An analysis of the chemical composition showed that the Ta plate located between the Cu plate and Ti is the barrier for melting Ti in the welding pool. The welded joint consists of the Cu-based solid solution, austenite, and (Ta,Ti)(Fe,Cr)2 and (Ta,Ti)Сu3 intermetallic particles 10–50 µm in size. Tantalum actively interacts with the Fe-based melt. A diffusion zone consisting of β-Ti and (Ti,Ta)2Cu intermetallic particles forms near the boundary between the titanium alloy and the Ta plate. Joint fracture upon tensile tests occurs along the boundary between the (Fe + Cu) zone and Ta plate; the ultimate tensile strength is σu = 215 MPa.
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REFERENCES
I. Tomashchuk, P. Sallamand, H. Andrzejewski, and D. Grevey, “The formation of intermetallics in dissimilar Ti6Al4V/copper/AISI 316 L electron beam and Nd:YAG laser joints,” Intermetallics 19, No. 10, 1466–1473 (2011).
N. B. Pugacheva, S. V. Smirnov, D. I. Vichuzhanin, Yu. V. Afonin, A. M. Orishich, S. M. Zadvorkin, and L. S. Goruleva, “Strength and structure of the permanent connection of VT1-0 alloy and steel 12Kh18N10T at various modes of laser welding,” Deform. Razr. Met., No. 7, 26–32 (2012).
I. Mitelea, C. Groza, and C. Craciunescu, “Copper interlayer contribution on Nd:YAG laser welding of dissimilar Ti–6Al–4V alloy with X5CrNi18-10 steel,” J. Mater. Eng. Perform. 22, No. 8, 2219–2223 (2013).
I. Tomashchuk, D. Grevey, and P. Sallamand, “Dissimilar laser welding of AISI 316L stainless steel to Ti6–Al4–6V alloy pure vanadium interlayer,” Mater. Sci. Eng., A 622, 37–45 (2015).
C. Shuhai, Z. Mingxin, H. Jihua, C. Chengji, Z. Hua, and Z. Xingke, “Microstructures and mechanical property of laser butt welding of titanium alloy to stainless steel,” Mater. Des. 53, 504–511 (2014).
S. Katayama, Handbook on Laser Welding, Ed. by N. L. Istomin (TEKhNOSFERA, Moscow, 2015) [in Russian].
A. M. Orishich, A. N. Cherepanov, V. P. Shapeev, and N. B. Pugacheva, Nanomodification of Welded Joints in Laser Welding of Metals and Alloys (SB RAS, Novosibirsk, 2014) [in Russian].
S. P. Belov, M. Ya. Brun, and S. G. Glazunov, Metal Science of Titanium and its Alloys, Ed. by S. G. Glazunov and B. A. Kolachev (Metallurgiya, Moscow, 1992) [in Russian].
N. P. Lyakishev, Phase Diagrams of Binary Metallic Systems (Mashinostroenie, Moscow, 2001) [in Russian].
C. H. Ng, S. H. Mok Edwin, and Hc. C. Man, “Effect of Ta in laser welding of NiTi to AISI 316L stainless steel,” J. Mater. Process. Technol. 226, 69–77 (2015).
A. N. Cherepanov, A. M. Orishich, N. B. Pugacheva, and V. P. Shapeev, “Investigation of the structure and properties of titanium-stainless steel permanent joints obtained by laser welding with the use of intermediate inserts and nanopowders,” Thermophys. Aeromech. 22, No. 2, 135–142 (2015).
A. G. Grigor’yants and I. N. Shiganov, Laser Tehnics and Technology. In 7 Books. Book 5. Laser Welding of Metals: Textbook for Universities (Vysshaya Shkola, Moscow, 1988) [in Russian].
N. B. Pugacheva, E. I. Senaeva, E. G. Volkova, L. S. Goruleva, and A. V. Makarov, “Microstructure of a laser-welded joint between a chromium–nickel steel and a titanium alloy with a copper insert,” Phys. Met. Metallogr. 120, No. 8, 775–781 (2019).
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The study was performed using equipment in the Centers of Collaborative Access Plastometry at the Institute of Engineering Science, Ural Branch, Russian Academy of Sciences, under state assignment of the Ministry of Science and Higher Education of the Russian Federation in accordance with themes nos. АААА-А18-118020790145-0 and АААА-А17-117030610136-3.
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Translated by N. Kolchugina
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Pugacheva, N.B., Orishich, A.M., Cherepanov, A.N. et al. Study of the Chemical Composition and Microstructure of AISI 321/Cu/Ta/Ti Welded Joint. Phys. Metals Metallogr. 121, 1112–1118 (2020). https://doi.org/10.1134/S0031918X20110083
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DOI: https://doi.org/10.1134/S0031918X20110083