High-Speed Friction Stir Welding of SiCp/Al-Mg-Si-Cu Composite

doi:10.1007/s40195-018-0833-2

Abstract

Abstract:

A 17 vol% SiCp/Al-Mg-Si-Cu composite plate with a thickness of 3 mm was successfully friction stir welded (FSWed) at a very high welding speed of 2000 mm/min for the first time. Microstructural observation indicated that the coarsening of the precipitates was greatly inhibited in the heat-affected zone of the FSW joint at high welding speed, due to the significantly reduced peak temperature and duration at high temperature. Therefore, prominent enhancement of the hardness was achieved at the lowest hardness zone of the FSW joint at this high welding speed, which was similar to that of the nugget zone. Furthermore, the ultimate tensile strength of the joint was as high as 369 MPa, which was much higher than that obtained at low welding speed of 100 mm/min (298 MPa). This study provides an effective method to weld aluminum matrix composite with superior quality and high welding efficiency.

Key words: Friction, stir, welding, Metal, matrix, composite, High, welding, speed, Microstructure, Mechanical, property

Chen Wang, Bei-Bei Wang, Dong Wang, Peng Xue, Quan-Zhao Wang, Bo-Lv Xiao, Li-Qing Chen, Zong-Yi Ma. High-Speed Friction Stir Welding of SiC_p/Al-Mg-Si-Cu Composite[J]. Acta Metallurgica Sinica (English Letters), 2019, 32(6): 677-683.

Figures/Tables 9

Fig. 1 Surface morphologies of FSW joints at different welding speeds

Fig. 2 Cross-sectional macrostructures of the FSW SiCp/6092Al joints

Fig. 3 Optical images of a BM and the NZs of FSW SiCp/6092Al joints: b FSW-100, c FSW-1000, d FSW-2000

Fig. 4 Hardness profiles of FSW SiCp/6092Al joints

Fig. 5 Tensile curves of FSW SiCp/6092Al joints

Table 1 Tensile properties of FSW SiCp/6092Al joints and thermal cycle in the LHZs

Sample	YS (MPa)	UTS (MPa)	El (%)	Welding coefficient (%)	Hardness value in LHZ (HV)	Elevated temperature duration (≥?100 °C) (s)
FSW-100	190?±?2	298?±?2	3.0?±?0.5	60.8	84	40
FSW-1000	240?±?4	365?±?5	4.0?±?0.5	74.5	107	14
FSW-2000	241?±?8	369?±?10	4.0?±?0.5	75.3	115	9
BM	391?±?2	490?±?2	8?±?0.5	-	163	-

Fig. 6 Fracture locations of FSW SiCp/6092Al joints

Fig. 7 TEM micrographs of FSW SiCp/6092Al joints: a BM, b NZ of FSW-100, c NZ of FSW-2000, d LHZ of FSW-100, e LHZ of FSW-2000

Fig. 8 Temperature histories recorded at LHZs of FSW SiCp/6092Al joints

References

[1]	S.C. Tjong, Z.Y. Ma, Mater. Sci. Eng. R 29, 49 (2000)
[2]	D. Storjohann, O.M. Barabash, S.S. Babu, Metall. Mater. Trans. A 36, 3237 (2005)
[3]	X.H. Wang, J.T. Niu, S.K. Guan, L.J. Wang, D.F. Cheng, Mater. Sci. Eng. A 499, 106 (2009)
[4]	G. Liu, L.N. Ma, Z.D. Ma, X.S. Fu, G.B. Wei, Y. Yang, T.C. Xu, W.D. Xie, X.D. Peng, Acta Metall. Sin. (Engl. Lett.) 31, 853(2018)
[5]	G.Q. Wang, Y.H. Zhao, Y.F. Hao, J. Mater. Sci. Technol. 34, 73(2018)
[6]	L.H. Wu, K. Nagatsuka, K. Nakata, J. Mater. Sci. Technol. (2018)
[7]	P. Xue, D.R. Ni, D. Wang, B.L. Xiao, Z.Y. Ma, Mater. Sci. Eng. A 528, 4683 (2011)
[8]	D.R. Ni, D.L. Chen, D. Wang, B.L. Xiao, Z.Y. Ma, Mater. Sci. Eng. A 608, 1 (2014)
[9]	K. Kalaiselvan, N. Murugan, Trans. Nonferrous Metals Soc. China 23, 616-624 (2013)
[10]	D.R. Ni, D.L. Chen, B.L. Xiao, D. Wang, Z.Y. Ma, Int. [J]. Fatigue 55, 64 (2013)
[11]	D. Wang, B.L. Xiao, D.R. Ni, Z.Y. Ma, Acta Metall. Sin. (Engl. Lett.) 27, 816(2014)
[12]	K. Zhao, Z.Y. Liu, B.L. Xiao, Z.Y. Ma, J. Mater. Sci. Technol. 33, 1004(2017)
[13]	S.B. Aziz, M.W. Dewan, D.J. Huggett, M.A. Wahab, A.M. Okeil, T.W. Liao, Acta Metall. Sin. (Engl. Lett.) 29, 869(2016)
[14]	D. Wang, Q.Z. Wang, B.L. Xiao, Z.Y. Ma, Mater. Sci. Eng. A 589, 271 (2014)
[15]	T. Wang, Y. Zou, X.M. Liu, K. Matsuda, Mater. Sci. Eng. A 671, 7 (2016)
[16]	H.J. Liu, J.C. Hou, H. Guo, Mater. Des. 47, 101(2013)
[17]	X.H. Zeng, P. Xue, D. Wang, D.R. Ni, B.L. Xiao, Z.Y. Ma, Sci. Technol. Weld.Join. 23, 478(2018)
[18]	H.J. Liu, H. Fujii, M. Maeda, K. Nogi, J. Mater. Sci. Lett. 22, 1061(2003)
[19]	H.J. Zhang, H.J. Liu, L. Yu, J. Mater. Eng. Perform. 21, 1182(2012)
[20]	X.G. Chen, M. da Silva, P. Gougeon, L. St-Georges, Mater. Sci. Eng. A 518, 174 (2009)
[21]	B.B. Wang, F.F. Chen, F. Liu, W.G. Wang, P. Xue, Z.Y. Ma, J. Mater. Sci. Technol. 33, 1009(2017)
[22]	G. Sha, K. Tugcu, X.Z. Liao, P.W. Trimby, M.Y. Murashkin, R.Z. Valiev et al., Acta Mater. 63, 169(2014)
[23]	V.D. Sitdikov, P.S. Chizhov, M.Y. Murashkin, A.A. Goidenko, R.Z. Valiev, Mater. Charact. 110, 222(2015)
[24]	G. Sha, Y.B. Wang, X.Z. Liao, Z.C. Duan, S.P. Ringer, T.G. Langdon, Acta Mater. 57, 3123(2009)
[25]	P. Heurtier, C. Desrayaud, F. Montheillet, Mater. Sci. Forum 396, 1537 (2002)
[26]	O. Frigaard, O. Grong, O.T. Midling, Metall. Mater. Trans. A 32, 1189 (2001)
[27]	Y.S. Sato, H. Kokawa, M. Enomoto, S. Jogan, Metall. Mater. Trans. A 30, 2429 (1999)
[28]	Q.Z. Wang, Z.X. Zhao, Y. Zhao, K. Yan, L. Liu, H. Zhang, Mater. Des. 102, 91(2016)
[29]	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)
[30]	F.C. Liu, Z.Y. Ma, Metall. Mater. Trans. A 39, 2378 (2008)