Abstract
Friction stir lap welding of a DP1180 advanced ultrahigh strength steel was successfully carried out by using three welding tools with different pin lengths. The effects of the welding heat input and material flow on the microstructure evolution of the joints were analyzed in detail. The relationship between pin length and mechanical properties of lap joints was studied. The results showed that the peak temperatures of all joints exceeded Ac3, and martensite phases with similar morphologies were formed in the stir zones. These martensite retained good toughness due to the self-tempering effect. The formation of ferrite and tempered martensite was the main reason for the hardness reduction in heat-affected zone. The mechanical properties of the lap joints were determined by loading mode, features of lap interface and the joint defects. When the stir pin was inserted into the lower sheet with a depth of 0.4 mm, the lap joint exhibited the maximum tensile strength of 12.4 kN.
Similar content being viewed by others
References
H.T. Jiang, D. Tang, Z.L. Mi, J. Iron Steel Res. 19, 1 (2007)
J. Galan, L. Samek, P. Verleysen, K. Verbeken, Y. Houbaert, Rev. Metal. Madrid. 48, 118 (2012)
Y.H. Rong, Acta Metall. Sin. 47, 1483 (2011)
F.B. Yang, B.Z. Bai, D.Y. Liu, K.D. Chang, D.Y. Wei, H.S. Fang, Acta Metall. Sin. 40, 296 (2004)
J.F. Wang, L.J. Yang, M.S. Sun, T. Liu, H. Li, Mater. Des. 97, 118 (2016)
S. Daneshpour, S. Riekehr, M. Kocak, C.H.J. Gerritsen, Sci. Technol. Weld. Join. 14, 20 (2009)
J. Jia, S.L. Yang, W.Y. Ni, J.Y. Bai, J. Mater. Res. 29, 2565 (2014)
M.I. Khan, M.L. Kuntz, P. Su, A. Gerlich, T. North, Y. Zhou, Sci. Technol. Weld. Join. 12, 175 (2007)
M. Pouranvari, S.P.H. Marashi, D.S. Safanama, Mater. Sci. Eng. A 528, 8344 (2011)
R.S. Mishra, Z.Y. Ma, Mater. Sci. Eng. R 50, 1 (2005)
P. Xue, X.X. Zhang, L.H. Wu, Z.Y. Ma, Acta Metall. Sin. 52, 1222 (2016)
Z.Y. Ma, Q. Shang, D.R. Ni, B.L. Xiao, Acta Metall. Sin. 54, 1597 (2018)
Q. Shang, D.R. Ni, P. Xue, B.L. Xiao, Z.Y. Ma, Mater. Sci. Eng. A 707, 426 (2017)
G.Q. Wang, Y.H. Zhao, Y.F. Hao, J. Mater. Sci. Technol. 34, 73 (2018)
X.H. Zeng, P. Xue, D. Wang, D.R. Ni, B.L. Xiao, Z.Y. Ma, Sci. Technol. Weld. Join. 23, 478 (2018)
F.C. Liu, Y. Hovanski, M.P. Miles, C.D. Sorensen, T.W. Nelson, J. Mater. Sci. Technol. 34, 39 (2018)
S. Mironov, Y.S. Sato, H. Kokawa, J. Mater. Sci. Technol. 34, 58 (2018)
L.H. Wu, X.B. Hu, X.X. Zhang, Y.Z. Li, Z.Y. Ma, X.L. Ma, B.L. Xiao, Acta Mater. 166, 371 (2019)
H. Zhang, D. Wang, P. Xue, L.H. Wu, D.R. Ni, B.L. Xiao, Z.Y. Ma, J. Mater. Sci. Technol. 34, 2183 (2018)
M. Ghosh, K. Kumar, R.S. Mishra, Mater. Sci. Eng. A 528, 8111 (2011)
M. Ghosh, K. Kumar, R.S. Mishra, Scr. Mater. 63, 851 (2010)
S. Mironov, Y.S. Sato, S. Yoneyama, H. Kokawa, H.T. Fujii, S. Hirano, Mater. Sci. Eng. A 717, 26 (2018)
M.M.Z. Ahmed, E. Ahmed, A.S. Hamada, S.A. Khodir, M.M. El-Sayed Seleman, B.P. Wynne, Mater. Des. 91, 378 (2016)
M. Matsushita, Y. Kitani, R. Ikeda, M. Ono, H. Fujii, Y.D. Chung, Sci. Technol. Weld. Join. 16, 181 (2011)
S.A. Khodir, Y. Morisada, R. Ueji, H. Fujii, Mater. Sci. Eng. A 558, 572 (2012)
Q.F. Dai, R.B. Song, W.Y. Fan, Z.F. Guo, X.X. Guan, Acta Metall. Sin. 48, 1160 (2012)
Q.L. Cui, D. Parkes, D. Westerbaan, S.S. Nayak, Y. Zhou, D. Liu, F. Goodwin, S. Bhole, D.L. Chen, Mater. Des. 90, 516 (2016)
Z.W. Li, Y.M. Yue, S.D. Ji, P. Chai, Z.L. Zhou, Mater. Des. 90, 238 (2016)
J. Trzaska, L.A. Dobrzański, J. Mater. Process. Technol. 192–193, 504 (2007)
Z.Q. Cui, B.X. Liu, Metallurgy and Heat Treatment Theory, 3rd edn. (Harbin Institute of Technology Press, Harbin, 2007), p. 215
W. Guo, Z.D. Wan, P. Peng, Q. Jia, G.S. Zou, Y. Peng, J. Mater. Process. Technol. 256, 229 (2018)
X.D. Liu, Y.B. Xu, R.D.K. Misra, F. Peng, Y. Wang, Y.B. Du, J. Mater. Process. Technol. 263, 186 (2019)
C. Luo, Y. Cao, Y. Zhao, L. Zhao, J. Shan, Weld. J. 97, 214 (2018)
Y.M. Yue, Z.L. Zhou, S.D. Ji, J. Zhang, Z.W. Li, Int. J. Adv. Manuf. Technol. 89, 1691 (2017)
H.J. Liu, Y.Q. Zhao, Y.Y. Hu, S.X. Chen, Z. Lin, Int. J. Adv. Manuf. Technol. 78, 1415 (2015)
L. Cederqvist, A.P. Reynolds, Weld. J. 80, 281 (2001)
Acknowledgements
This work was supported by the National Natural Science Foundation of China (Nos. 51671190, 51774085 and 51471171).
Author information
Authors and Affiliations
Corresponding authors
Additional information
Available online at http://link.springer.com/journal/40195
Rights and permissions
About this article
Cite this article
Wang, Z.W., Xie, G.M., Wang, D. et al. Microstructural Evolution and Mechanical Behavior of Friction-Stir-Welded DP1180 Advanced Ultrahigh Strength Steel. Acta Metall. Sin. (Engl. Lett.) 33, 58–66 (2020). https://doi.org/10.1007/s40195-019-00949-5
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s40195-019-00949-5