J. Mater. Sci. Technol. ›› 2019, Vol. 35 ›› Issue (5): 824-832.DOI: 10.1016/j.jmst.2018.11.005
• Orginal Article • Previous Articles Next Articles
X.X. Zhanga, L.H. Wua, H. Andräb, W.M. Ganc, M. Hofmannd, D. Wanga, D.R. Nia, B.L. Xiaoa, Z.Y. Maa?()
Received:
2018-06-11
Accepted:
2018-09-28
Online:
2019-05-10
Published:
2019-02-20
Contact:
Ma Z.Y.
X.X. Zhang, L.H. Wu, H. Andrä, W.M. Gan, M. Hofmann, D. Wang, D.R. Ni, B.L. Xiao, Z.Y. Ma. Effects of welding speed on the multiscale residual stresses in friction stir welded metal matrix composites[J]. J. Mater. Sci. Technol., 2019, 35(5): 824-832.
Macro-micro point | Coordinates (mm) | ||
---|---|---|---|
T | L | N | |
P0 | 0 | 150 | 1.55 |
P1 | 2 | 150 | 1.55 |
P2 | 4 | 150 | 1.55 |
P3 | 6 | 150 | 1.55 |
P4 | 8 | 150 | 1.55 |
P5 | 10 | 150 | 1.55 |
P6 | 12 | 150 | 1.55 |
P7 | 22 | 150 | 1.55 |
P8 | 32 | 150 | 1.55 |
P9 | 42 | 150 | 1.55 |
Table 1 Coordinates of ten macro-micro points.
Macro-micro point | Coordinates (mm) | ||
---|---|---|---|
T | L | N | |
P0 | 0 | 150 | 1.55 |
P1 | 2 | 150 | 1.55 |
P2 | 4 | 150 | 1.55 |
P3 | 6 | 150 | 1.55 |
P4 | 8 | 150 | 1.55 |
P5 | 10 | 150 | 1.55 |
P6 | 12 | 150 | 1.55 |
P7 | 22 | 150 | 1.55 |
P8 | 32 | 150 | 1.55 |
P9 | 42 | 150 | 1.55 |
Fig. 1 Computational domains used in multiscale modeling [14]: (a) MMC plate, only the right half is modeled. Symmetry boundary conditions are imposed on the symmetry plane for macroscale modeling; (b) unit cell (UC) for microscale modeling.
Fig. 2 Effects of welding speed on temperature fields (a), peak temperature (b) and accumulated plastic strain along the ‘transversal line’ defined in Fig. 1(a) (c).
Fig. 3 Measured and predicted thermal cycles at location P2 for V50 (a) and V150 (b). The previous model in (a) means the multiscale model in the Ref. [14]. The line ABˉ denotes the preservation time td when the temperature is above 250?°C. The measured temperature of V150?in.(b) is from our previous work [14].
Fig. 4 Profiles of L (a), T (b) and N (c) macroscopic RSes cross welds at middle thickness and middle weld length for V50, V100 and V150. The experimental results of V150 are from our previous work [14].
Fig. 6 Profiles of L, T and N elastic mismatch RSes cross welds at middle thickness and middle weld length for V50, V100 and V150: (a) L, (c) T and (e) N components in 2009Al matrix; (b) L, (d) T and (f) N components in reinforcement. The experimental results of V150 are from our previous work [14].
Fig. 8 Comparison of profiles of thermal misfit residual stress cross welds at middle thickness and middle weld length for V50, V100 and V150: (a) in 2009Al matrix; (b) in reinforcement. The experimental results of V150 are from our previous work [14].
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