Microstructure and Mechanical Properties of Laser-Welded Joints of Ti-22Al-25Nb/TA15 Dissimilar Titanium Alloys
Source abstract
Abstract
Laser beam welding (LBW) was applied to join 1-mm-thick dissimilar titanium alloys, Ti-22Al-25Nb (at.%) and TA15, and the microstructure and mechanical properties of the welded joints were systematically analyzed. Defect-free joints were obtained, and the fusion zone mainly consisted of B2 and martensitic α′ phases because of the uneven distribution of the β phase stabilizer and rapid cooling rate of LBW. The phase compositions of the heat-affected zone varied with the different thermal cycles during the welding process. The different microstructures of the dissimilar titanium alloys led to an unsymmetrical hardness profile, with the welded seam exhibiting the lowest value of 271 HV. In room-temperature tensile tests, the fractures all occurred preferentially in the fusion zone. The strengths of the joints were close to those of the base metal but with prominently decreasing ductility. In tensile tests performed at 550 °C, all the joints fractured in the TA15 base metal, and the strength and plasticity of the welds were equivalent to those of the TA15 base metal.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Welding Techniques Analysis · Intermetallics and Advanced Alloy Properties · Titanium Alloys Microstructure and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (38)
Show source-provided references
1. D. Banerjee, A.K. Gogia, T.K. Nandi, and V.A. Joshi, A New Ordered Orthorhombic Phase in a Ti3Al-Nb Alloy, Acta Metall., 1988, 36, p 871–88210.1016/0001-6160(88)90141-1 ↗
2. M. Hagiwara, A. Araoka, S.J. Yang, S. Emura, and S.W. Nam, The Effect of Lamellar Morphology on Tensile and High-Cycle Fatigue Behavior of Orthorhombic Ti-22Al-27Nb Alloy, Metall. Mater. Trans. A, 2004, 35A, p 2161–217010.1007/s11661-004-0164-y ↗
3. M. Hagiwara, S. Emura, A. Araoka, B.O. Kong, and F. Tang, Enhanced Mechanical Properties of Orthorhombic Ti2AlNb-Based Intermetallic Alloy, Met. Mater. Int., 2003, 9, p 265–27210.1007/BF03027045 ↗
4. T.K. Nandy and D. Banerjee, Creep of the Orthorhombic Phase Based on the Intermetallic Ti2AlNb, Intermetallics, 2000, 8, p 915–92810.1016/S0966-9795(00)00059-5 ↗
5. J.H. Peng, Y. Mao, S.Q. Li, and X.F. Sun, Microstructure Controlling by Heat Treatment and Complex Processing for Ti2AlNb Based Alloys, Mater. Sci. Eng. A, 2001, 299, p 75–8010.1016/S0921-5093(00)01417-9 ↗
6. A. Pathak and A.K. Singh, A First Principles Study of Ti2AlNb Intermetallic, Solid State Commun., 2015, 204, p 9–1510.1016/j.ssc.2014.12.002 ↗
7. W. Wang, W.D. Zeng, C. Xue, X.B. Liang, and J.W. Zhang, Designed Bimodal Size Lamellar O Microstructures in Ti2AlNb Based Alloy: Microstructural Evolution, Tensile and Creep Properties, Mater. Sci. Eng. A, 2014, 618, p 288–29410.1016/j.msea.2014.09.035 ↗
8. A.P. Wu, G.S. Zou, J.L. Ren, H.J. Zhang, G.Q. Wang, X. Liu, and M.R. Xie, Microstructures and Mechanical Properties of Ti-24Al-17Nb (at.%) Laser Beam Welding Joints, Intermetallics, 2002, 10, p 647–65210.1016/S0966-9795(02)00049-3 ↗
9. G.L. Chen, Z.Q. Sun, and X. Zhou, Oxidation and Mechanical Behavior of Intermetallic Alloys in the Ti-Nb-Al Ternary System, Mater. Sci. Eng. A, 1992, 153, p 597–60110.1016/0921-5093(92)90257-2 ↗
10. J.K. Lee, M.H. Oh, and D.M. Wee, Long-Term Oxidation Properties of Al-Ti-Cr Two-Phase Alloys as Coating Materials for TiAl Alloys, Intermetallics, 2002, 10, p 347–35210.1016/S0966-9795(02)00006-7 ↗
11. Z.L. Lei, Z.J. Dong, Y.B. Chen, L. Huang, and R.C. Zhu, Microstructure and Mechanical Properties of Laser Welded Ti-22Al-27Nb/TC4 Dissimilar Alloys, Mater. Sci. Eng. A, 2013, 559, p 909–91610.1016/j.msea.2012.09.057 ↗
12. G. Çam and M. Koçak, Progress in Joining of Advanced Materials, Int. Mater. Rev., 1998, 43, p 1–4410.1179/imr.1998.43.1.1 ↗
13. G. Çam and M. Koçak, Progress in Joining of Advanced Materials—Part 1: Solid State Joining, Fusion Joining, and Joining of Intermetallics, Sci. Technol. Weld. Join., 1998, 3, p 105–12610.1179/stw.1998.3.3.105 ↗
14. G. Çam, Friction Stir Welded Structural Materials: Beyond Al-Alloys, Int. Mater. Rev., 2011, 56, p 1–4810.1179/095066010X12777205875750 ↗
15. P.L. Threadgill, The Prospects for Joining Titanium Aluminides, Mater. Sci. Eng. A, 1995, 192–193, p 640–64610.1016/0921-5093(94)03346-3 ↗
16. L.Q. Li, Y.B. Chen, C.L. Zhang, Z.L. Lei, and G.Y. Xu, Crystallization Behavior of Ti3Al-Nb Alloy Laser Beam Welding Joints, Nonferrous Met. Soc. China, 2005, 15, p 16–20
17. L.J. Tan, Z.K. Yao, W. Zhou, H.Z. Guo, and Y. Zhao, Microstructure and Properties of Electron Beam Welded Joint of Ti-22Al-25Nb/TC11, Aerosp. Sci. Technol., 2010, 14, p 302–30610.1016/j.ast.2010.02.002 ↗
18. H.T. Zhang, P. He, J.C. Feng, and H.Q. Wu, Interfacial Microstructure and Strength of the Dissimilar Joint Ti3Al/TC4 Welded by the Electron Beam Process, Mater. Sci. Eng. A, 2006, 425, p 255–25910.1016/j.msea.2006.03.048 ↗
19. Y.Y. Liu, Z.K. Yao, H.Z. Guo, and H.H. Yang, Microstructure and Property of the Ti-24Al-15Nb-1.5Mo/TC11 Joint Welded by Electron Beam Welding, Int. J. Min Met. Mater., 2009, 16, p 568–57510.1016/S1674-4799(09)60098-4 ↗
20. Z.L. Lei, Z.J. Dong, Y.B. Chen, J. Zhang, and R.C. Zhu, Microstructure and Tensile Properties of Laser Beam Welded Ti-22Al-27Nb Alloys, Mater. Des., 2013, 46, p 151–15610.1016/j.matdes.2012.10.022 ↗
21. C. Qin, Z.K. Yao, Y.Z. Li, Y.Q. Ning, and H.Z. Guo, Effect of Hot Working on Microstructure and Mechanical Properties of TC11/Ti2AlNb Dual-Alloy Joint Welded by Electron Beam Welding Process, Trans. Nonferrous Met. Soc. China, 2014, 24, p 3500–350810.1016/S1003-6326(14)63494-4 ↗
22. K.Z. Zhang, M. Liu, Z.L. Lei, and Y.B. Chen, Microstructure Evolution and Tensile Properties of Laser-TIG Hybrid Welds of Ti2AlNb-Based Titanium Aluminide, J. Mater. Eng. Perform., 2014, 23, p 3778–378510.1007/s11665-014-1153-y ↗
23. Q.J. Sun and G.C. Wang, Microstructure and Superplasticity of TA15 Alloy, Mater. Sci. Eng. A, 2014, 606, p 401–40810.1016/j.msea.2014.03.117 ↗
24. J.C. Feng, H.Q. Wu, J.S. He, and B.G. Zhang, Microstructure Evolution of Electron Beam Welded Ti3Al-Nb Joint, Mater. Charact., 2005, 54, p 99–10510.1016/j.matchar.2004.11.006 ↗
25. H.Q. Wu, J.C. Feng, J.S. He, and B.G. Zhang, Microstructure Evolution of High Nb Containing Ti3AI, Based Alloy Electron Beam Welding Joints, Chin. J. Nonferr. Met., 2004, 14, p 1313–1317
26. S. Kou, Welding Metallurgy, Wiley, New York, 1987
27. F. Tang, S. Nakazawa, and M. Hagiwara, The Effect of Quaternary Additions on the Microstructures and Mechanical Properties of Orthorhombic Ti2AlNb-based Alloys, Mater. Sci. Eng. A, 2002, 329, p 492–49810.1016/S0921-5093(01)01626-4 ↗
28. R. Strychor, J.C. Williams, and W.A. Soffa, Phase Transformations and Modulated Microstructures in Ti-Al-Nb Alloys, Metall. Mater. Trans. A, 1988, 19, p 225–23410.1007/BF02652530 ↗
29. K. Muraleedharan, A.K. Gogia, T.K. Nandy, D. Banerjee, and S. Lele, Transformations in a Ti-24Al-15Nb Alloy: Part I, Phase Equilibria and Microstructure, Metall. Mater. Trans. A, 1992, 23A, p 401–41510.1007/BF02801158 ↗
30. J.W. Zhang, S.Q. Li, D.X. Zou, W.Q. Ma, and Z.Y. Zhong, Processing and Microstructure Control of (α2 + B2 + O) Alloy Sheet in Ti–Al–Nb System, Intermetallics, 2000, 8, p 699–70210.1016/S0966-9795(99)00148-X ↗
31. G.M. Reddy, T. Mohandas, and K. Chandreshekar, Observations on Welding of alpha(2) + O+beta Titanium Aluminide, Sci. Technol. Weld. Join., 2001, 6, p 300–30410.1179/136217101101538910 ↗
32. C.J. Boehlert, B.S. Majumdar, V. Seetharaman, and D.B. Miracle, The Microstructural Evolution in Ti-Al-Nb O + BCC Orthorhombic Alloys, Metall. Mater. Trans. A, 1999, 30, p 2305–232310.1007/s11661-999-0240-4 ↗
33. G.S. Martin, C.E. Albright, and T.A. Jones, Evaluation of CO2 Laser Beam Welding on a Ti3Al-Nb Alloy, Weld. J., 1995, 74, p 77–82
34. J. dos Santos, G. Çam, F. Torster, A. Insfran, S. Riekehr, V. Ventzke, and M. Koçak, Properties of Power Beam Welded Steels, Al- and Ti-Alloys: Significance of Strength Mismatch, Weld. World, 2000, 44, p 42–64
35. B.G. Zhang, M.X. Shi, G.Q. Chen, and J.C. Feng, Microstructure and Defect of Titanium Alloy Electron Beam Deep Penetration Welded Joint, Trans. Nonferrous Met. Soc. China, 2012, 22, p 2633–263710.1016/S1003-6326(11)61510-0 ↗
36. J. Kumpfert and W.A. Kaysser, Orthorhombic Titanium Aluminides: Phases, Phase Transformations and Microstructure Evolution, Zeitschrift fuer Metallkunde/Materials Research and Advanced Techniques, 2001, 92, p 128–134
37. W. Lu, Y.W. Shi, Y.P. Lei, and X.Y. Li, Effect of Electron Beam Welding on the Microstructures and Mechanical Properties of Thick TC4-DT Alloy, Mater. Des., 2012, 34, p 509–51510.1016/j.matdes.2011.09.004 ↗
38. J. Kumpfert, Intermetallic Alloys Based on Orthorhombic Titanium Aluminide, Adv. Eng. Mater., 2001, 3, p 851–86410.1002/1527-2648(200111)3:11<851::AID-ADEM851>3.0.CO;2-G ↗