Abstract
Dissimilar welding of γ-TiAl alloy and steel is applied by laser with different laser pulse current (80A, 85A and 90A). The dissimilar laser weldability of γ-TiAl alloy and steel is investigated on laser welding without and with V/Cu filler metals. The results reveal that the brittle FeAl, Fe2Ti, Fe2Al5, Ti3Al and TiC intermetallic compounds (IMCs) and weld cracks are found in the joint without filler metals, causing the poor laser weldability. Adding V/Cu filler metals can dramatically improve the weldability of γ-TiAl alloy and steel, and detailed effects of pulse current on microstructural characterization and mechanical properties of the joints are investigated. An incomplete penetration joint is obtained when 80A is used. With the pulse current increases to 85A and 90A, full- penetration joints are obtained, and Cu-based solid solution, (Fe,V) solid solutions and less amount of AlCu2Ti IMCs are formed in the weld, but Fe2Ti is only found in the weld with 90A. The maximum joint tensile strength (297 MPa) is obtained at a pulse current of 85A, and the joints fracture at the γ-TiAl/weld interface zone where AlCuTi and AlCu2Ti IMCs are generated.
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References
K. Kothari, R. Radhakrishnan, and N.M. Wereley, Advances in Gamma Titanium Aluminides and Their Manufacturing Techniques, Prog. Aerosp. Sci., 2012, 55, p 1–16. https://doi.org/10.1016/j.paerosci.2012.04.001
S.J. Qu, S.Q. Tang, A.H. Feng, C. Feng, J. Shen, and D.L. Chen, Microstructural Evolution and High-Temperature Oxidation Mechanisms of a Titanium Aluminide Based Alloy, Acta Mater., 2018, 148, p 300–310. https://doi.org/10.1016/j.actamat.2018.02.013
Q. Hu, Q. Wang, X.L. Wu, L.C. Zeng, and X.W. Liu, Microstructure Evolution and Mechanical Properties of a TiAl Alloy Modified by High-Entropy Alloy Additions, J. Mater. Eng. Perform., 2023, 32, p 9121–9136. https://doi.org/10.1007/s11665-022-07782-5
X. Liu, Y. Han, S. Yan, H. Chen, and X. Ran, Improved Compressive Properties of TiAl Alloy with Ultrafine/Fine Grains Prepared by High-Energy Ball Milling and Hot-Pressing Sintering, J. Mater. Eng. Perform. Perform., 2023, 32, p 4817–4822. https://doi.org/10.1007/s11665-022-07449-1
D.H. Zhang, D.P. Shi, F. Wang, D.S. Qian, Y.B. Zhou, J.J. Fu, M. Chen, D.S. Qiu, and S.F. Jiang, Electromagnetic Shocking Induced Fatigue Improvement via Tailoring the α-Grain Boundary in Metastable β Titanium Alloy Bolts, J. Alloys Comp., 2023, 966, p 171536. https://doi.org/10.1016/j.jallcom.2023.171536
G. Chen, Y.B. Peng, G. Zheng, Z.X. Qi, M.Z. Wang, H.C. Yu, C.L. Dong, and C.T. Liu, Polysynthetic Twinned TiAl Single Crystals for High-Temperature Applications, Nat. Mater., 2016, 15, p 876–882. https://doi.org/10.1038/NMAT4677
T.M. Pollock, Alloy Design for Aircraft Engines, Nat. Mater., 2016, 15, p 809–815. https://doi.org/10.1038/nmat4709
Y.J. Hao, J.X. Liu, S.K. Li, J.C. Li, X.Z. Liu, and X.Y. Feng, Effects of Nano-Twinning on the Deformation and Mechanical Behaviours of TiAl Alloys with Distinct Microstructure at Elevated Loading Temperatures, Mater. Sci. Eng. A, 2017, 705, p 210–218. https://doi.org/10.1016/j.msea.2017.08.077
T. Noda, T. Shimizu, M. Okabe, and T. Iikubo, Joining of TiAl and Steels by Induction Brazing, Mater. Sci. Eng. A, 1997, 239–240, p 613–618.
P. He, J.C. Feng, and W. Xu, Mechanical Property of Induction Brazing TiAl-Based Intermetallics to Steel 35CrMo Using AgCuTi Filler Metal, Mater. Sci. Eng. A, 2006, 418, p 45–52. https://doi.org/10.1016/j.msea.2005.11.005
P. He, J.C. Feng, and W. Xu, Microstructure and Kinetics of Induction Brazing TiAl-Based Intermetallics to Steel 35CrMo Using AgCuTi Filler Metal, Mater. Sci. Eng. A, 2006, 418, p 53–60. https://doi.org/10.1016/j.msea.2005.11.003
P. He, J.C. Feng, and W. Xu, Interfacial Microstructure of Induction Brazed Joints of TiAl-Based Intermetallics to Steel 35CrMo with AgCuNiLi Filler, Mater. Sci. Eng. A, 2005, 408, p 195–201. https://doi.org/10.1016/j.msea.2005.08.009
P. He, J.C. Feng, and W. Xu, Mechanical Property and Fracture Characteristic of Induction Brazed Joints of TiAl-Based Intermetallics to Steel 35CrMo with Ag-Cu-Ni-Li Filler, Mater. Sci. Eng. A, 2005, 412, p 214–221. https://doi.org/10.1016/j.msea.2005.08.147
Y.L. Li, P. He, and J.C. Feng, Interface Structure and Mechanical Properties of the TiAl/42CrMo Steel Joint Vacuum Brazed with Ag–Cu/Ti/Ag–Cu Filler Metal, Scr. Mater., 2006, 55, p 171–174. https://doi.org/10.1016/j.scriptamat.2006.03.055
B. Chen, H.P. Xiong, W. Mao, Y.Y. Chen, L. Ye, and X. Wu, Microstructure and Bonding Mechanism of TiAl/42CrMo Steel Joint Using Ti-15Cu-15Ni filler Metal, J. Aeronaut. Mater., 2006, 26, p 17–318. (in Chinese)
H.G. Dong, Z.L. Yang, G.S. Yang, and C. Dong, Vacuum Brazing of TiAl Alloy to 40Cr Steel with Ti60Ni22Cu10Zr8 Alloy Foil as Filler Metal, Mater. Sci. Eng. A, 2013, 561, p 252–258. https://doi.org/10.1016/j.msea.2012.11.014
P. He, J.C. Feng, B.G. Zhang, and Y.Y. Qian, Microstructure and Strength of Diffusion-Bonded Joints of TiAl Base Alloy to Steel, Mater. Charact., 2002, 48, p 401–406. https://doi.org/10.1016/S1044-5803(02)00319-4
P. He, J.C. Feng, B.G. Zhang, and Y.Y. Qian, A New Technology for Diffusion Bonding Intermetallic TiAl to Steel with Composite Barrier Layers, Mater. Charact., 2003, 50, p 87–92. https://doi.org/10.1016/S1044-5803(03)00122-0
S. Simoes, F. Viana, A.S. Ramos, M.T. Vieira, and M.F. Vieira, Reaction-Assisted Diffusion Bonding of TiAl Alloy to Steel, Mater. Chem. Phys., 2016, 171, p 73–82. https://doi.org/10.1016/j.matchemphys.2015.11.032
S. Simões, A.S. Ramos, F. Viana, M.T. Vieira, and M.F. Vieira, Joining of TiAl to Steel by Diffusion Bonding with Ni/Ti Reactive Multilayers, Metals, 2016, 96, p 1–11. https://doi.org/10.3390/met6050096
H.G. Dong, L.Z. Yu, H.M. Gao, D.W. Deng, W.L. Zhou, and C. Dong, Microstructure and Mechanical Properties of Friction Welds Between TiAl Alloy and 40Cr Steel Rods, Trans. Nonferrous Met. Soc. China, 2014, 24, p 3126–3133. https://doi.org/10.1016/S1003-6326(14)63451-8
W.-B. Lee, Y.-J. Kim, and S.-B. Jung, Effects of Copper Insert Layer on the Properties of Friction Welded Joints Between TiAl and AISI 4140 Structural Steel, Intermetallics, 2004, 12, p 671–678. https://doi.org/10.1016/j.intermet.2004.02.004
Z.Y. Ye, J.N. Li, L.Q. Liu, F.K. Ma, B. Zhao, and X.L. Wang, Microstructure and Wear Performance Enhancement of Carbon Nanotubes Reinforced Composite Coatings Fabricated by Laser Cladding on Titanium Alloy, Opt. Laser Tech., 2021, 139, p 106957. https://doi.org/10.1016/j.optlastec.2021.106957
H.B. Xia, B.Y. Yang, J.H. Su, Y.F. Liu, X. Su, C. Wang, X. Qiang, T. Wu, and C.W. Tan, Improvement of Laser Welded TC4/CFRTP Joint Strength by Combination of Surface Modification of MAO and Laser Texturing, Thin Wall. Struct., 2024, 196, p 111409. https://doi.org/10.1016/j.tws.2023.111409
H.B. Xi, B.Y. Yang, Y.D. Han, L.Y. Xu, C.W. Tan, L.Q. Li, H.Y. Li, X.Y. Zhao, K.P. Zhang, J. Peng, P.H. Geng, and N.S. Ma, Toward Understanding the Fractured Mechanism in Laser Welded-Brazed Al/Steel Interface by In–Situ SEM Tensile Observation, J. Mater. Process. Tech., 2024 https://doi.org/10.1016/j.jmatprotec.2024.118294
J.P. Oliveira, B. Panton, Z. Zeng, C.M. Andrei, Y. Zhou, and R.M. Miranda, Laser Joining of NiTi to Ti6Al4V Using a NIOBIUM INTERLAYER, Acta Mater., 2016, 105, p 9–15. https://doi.org/10.1016/j.actamat.2015.12.021
J.L. Xue, W. Guo, J. Yang, M.S. Xia, G. Zhao, C.W. Tan, Z.D. Wan, J.X. Chi, and H.Q. Zhang, In-Situ Observation of Microcrack Initiation and Damage Nucleation Modes on the HAZ of Laser-Welded DP1180 Joint, J. Mater. Sci. Tech., 2023, 148, p 138–149. https://doi.org/10.1016/j.jmst.2023.01.001
M. Wiegand, N. Sommer, L. Marks, and S. Böhm, High-Strength Dissimilar Welds Between a Niti Shape Memory Alloy and Titanium Obtained by Intermixing Niobium Using Pulsed Laser Beam Welding, Metall. Mater. Trans. A, 2024, 55, p 278–290. https://doi.org/10.1007/s11661-023-07248-w
Z.Y. Zhu, Y.L. Liu, G.Q. Gou, W. Gao, and J. Chen, Effect of Heat Input on Interfacial Characterization of the Butter Joint of Hot-Rolling CP-Ti/Q235 Bimetallic Sheets by Laser+CMTZ, Sci. Rep., 2021, 11, p 10020. https://doi.org/10.1038/s41598-021-89343-9
Y.H. Chen, S.W. Sun, T.M. Zhang, X.W. Zhou, and S.H. Li, Effects of Post-Weld Heat Treatment on the Microstructure and Mechanical Properties of Laser-Welded NiTi/304SS Joint with Ni Filler, Mater. Sci. Eng. A, 2020, 771, p 138545. https://doi.org/10.1016/j.msea.2019.138545
T.B. Massalski, Binary alloy phase diagram, ASM international, Metal Park, 1990.
D.S. Zhao, J.C. Yan, C.W. Wang, Y. Wang, and S.Q. Yang, Interfacial Structure and Mechanical Properties of Hot Rool Bonded Joints Between Titanium Alloy and Stainless Steel Using Copper Interlayer, Sci. Technol. Weld. Join., 2008, 13, p 765–768. https://doi.org/10.1179/136217108X329304
Q. Sun, J.Y. Chen, X.N. Wang, F. Gu, C.W. Tan, A. Shamsolhodaei, L.N. Sun, and Y.N. Zhou, Study on Weld Formation and Segregation Mechanism for Dissimilar Pulse Laser Welding of NiTi and Cu Wires, Opt. Laser Tech., 2021, 140, p 107071. https://doi.org/10.1016/j.optlastec.2021.107071
Z. Zeng, B. Panton, J.P. Oliveira, A. Han, and Y.N. Zhou, Dissimilar Laser Welding of NiTi Shape Memory Alloy and Copper, Smart Mater. Struct., 2015, 24, p 125036. https://doi.org/10.1088/0964-1726/24/12/125036
X.L. Cai, H.M. Li, B.K. Ji, M.D. Li, X.P. Yao, Y. Wang, and D.Q. Sun, Effect of Single Alloying Element (Ti, Nb, V, Cu) on Microstructure and Mechanical Properties of Dissimilar TiAl/Ni-Based Superalloy Laser Joints, Opt. Laser Tech., 2022, 146, p 107575. https://doi.org/10.1016/j.optlastec.2021.107575
J.L. Xie, Y.H. Chen, L.M. Yin, T.M. Zhang, S.L. Wang, and L.T. Wang, Microstructure and Mechanical Properties of Ultrasonic Spot Welding TiNi/Ti6Al4V Dissimilar Materials Using Pure Al Coating, J. Manuf. Process., 2021, 64, p 473–480. https://doi.org/10.1016/j.jmapro.2021.02.009
Y.H. Chen, Y.Q. Mao, W.W. Lu, and P. He, Investigation of Welding Crack in Micro Laser Welded NiTiNb Shape Memory Alloy and Ti6Al4V Alloy Dissimilar Metals Joints, Opt. Laser Tech., 2017, 91, p 197–202. https://doi.org/10.1016/j.optlastec.2016.12.028
P. Villars, A. Prince, and H. Okamoto, Hankbook of ternary alloy phase diagrams, ASM International, Materials Park, 1995.
V. Raghavan, Al-Cu-Ti (Aluminum-Copper-Titanium), J. Phase Equilib. Diffus., 2006, 27, p 156–157. https://doi.org/10.1361/154770306X97245
G. Wang, P. Wu, W. Wang, D.D. Zhu, C.W. Tan, Y.S. Su, X.Y. Shi, and W. Cao, Brazing Ti-48Al-2Nb-2Cr Alloys with Cu-Based Amorphous Alloy Filler, Appl. Sci., 2018, 8, p 920. https://doi.org/10.3390/app8060920
X.P. Liu, L.X. Zhang, Z. Sun, and J.C. Feng, Microstructure and Mechanical Properties of Transparent Alumina and TiAl Alloy Joints Brazed Using Ag-Cu-Ti Filler Metal, Vacuum, 2018, 151, p 80–89. https://doi.org/10.1016/j.vacuum.2018.01.019
R.K. Shiue, S.K. Wu, and S.Y. Chen, Infrared Brazing of TiAl Intermetallic Using Bag-8 Braze Alloy, Acta Mater., 2003, 51, p 1991–2004. https://doi.org/10.1016/S1359-6454(02)00606-7
Acknowledgments
The work was supported by the General Topics for the 2023 Year of the 14th Five-Year Plan for Education and Science in Jilin Province (GH23818), the 2023 Provincial Innovation Project (No. 202311437031), the Metal Material Advanced Welding Technology Innovation Team of Jilin Province (20230508039RC) and the Education Department of Jilin Province (JJKH20180126KJ).
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QL performed the experiment and date analyses and wrote original draft manuscript. XC contributed to the conception of the study, revision of the manuscript and funding acquisition. XX contributed to the manuscript structure arrangement and project administration. HM helped prepare the manuscript and data chart processing of the manuscript. HL contributed significantly to analyses. DS contributed to microstructure analysis and project administration.
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Li, Q., Cai, X., Xu, X. et al. Microstructure Characteristics and Mechanical Properties of γ-TiAl/Steel Joints with Different Laser Pulse Currents. J. of Materi Eng and Perform (2024). https://doi.org/10.1007/s11665-024-09383-w
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DOI: https://doi.org/10.1007/s11665-024-09383-w