Abstract
The maximum principal stress, von Mises equivalent stress, equivalent creep strain, stress triaxiality in dissimilar metal welded joints between austenitic (HR3C) and martensitic heat-resistant steel (T91) are simulated by FEM at 873 K and under inner pressure of 42.26 MPa. The results show that the maximum principal stress and von Mises equivalent stress are quite high in the vicinity of weld/T91 interface, creep cavities are easy to form and expand in the weld/T91 interface. There are two peaks of equivalent creep strains in welded joint, and the maximum equivalent creep strain is in the place 27-32 mm away from the weld/T91 interface, and there exists creep constrain region in the vicinity of weld/T91 interface. The high stress triaxiality peak is located exactly at the weld/T91 interface. Accordingly, the weld/T91 interface is the weakest site of welded joint. Therefore, using stress triaxiality to describe creep cavity nucleation and expansion and crack development is reasonable for the dissimilar metal welded joint between austenitic and martensitic steel.
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References
Yang F, Zhang Y L, Ren Y N, et al. New Heat-resistant Steel Welding[M]. Beijing: China Electric Power Press, 2006 (in Chinese)
Ning B Q, Liu Y C, Yin H Q, et al. Development and Investigation of Ferritic Heat Resistant Steels for Boiler Tube of the Advanced Power Plants[J]. Mater. Rev., 2006,20(12):83–86 (in Chinese)
Swindemana R W, Santellaa M L, Maziasza P J, et al. Issues in Replacing Cr-Mo Steels and Stainless Steels with 9Cr–1Mo–V Steel[J]. Int. J. Pressure Vessels and Piping, 2004, 81(6):507–512
Zhu L H, Zhao Q X, Gu H C, et al. Evaluation of Creep Rupture Lifetime of New Heat-resistant Steel T91[J]. Boiler Technology, 2002,33(5):24–27 (in Chinese)
Brozda J, Lomozik M, Zeman M. Weldability of 9Cr1MoNbV(P91) Steel Intended for Service in the Power Industries[J]. Welding Research Abroad, 1997,43(8-9):58–68
Roberts D I, Ryder R I, Viswanathan R. Performance of Dissimilar Welds in Service[J]. Journal of Pressure Vessel Technology, 1985,107(3):247–254
Lundin C D. Dissimilar Metal Welds-transition Joints Literature Review[J]. Welding Journal, 1982, 61(Suppl.2): 58–63
Bhaduri A K, Venkadesan S, Rodriguez P. Transition Metal Joints for Steam Generators-an Overview[J]. Int. J. Pres. Ves. & Piping, 1994, 58(3): 251–265
Zhang J Q, Zhang G D, He J, et al. Behaviors of Interfacial Creep Damage of Dissimilar Welded Joint between Martensitic Heat-resistant Steel and Bainitic Heat-resistant Steel[J]. Acta Metall. Sin., 2007, 43(23): 1275–1281
Zhang J Q, Zhang G D, Luo C H, et al. Influence of Creep Strength of Weld on Interfacial Creep Damage of Dissimilar Welded Joint between Martensitic and Bainitic Heat-resistant Steel[J]. Journal of Wuhan University of Technology-Mater. Sci. Ed., 2013, 28(1): 178–183
Shi C Y, Tian X T, Chen Z G. On Mechanical Parameter Controlling Creep Brittle Rupture Along Interface of Dissimilar Metal Welded Joints[J]. Transactions of the China Welding Institution, 1995, 16(4):185–189 (in Chinese)
Cane B J, Middleton C J. Intergranular Creep-cavity Formation in Low-alloy Bainitic Steels[J]. Metal Science, 1981, 15: 295–301
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Funded by the National Natural Science Foundation of China (No.51374154)
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Zhang, J., Tang, Y., Zhang, G. et al. Numerical simulation on interfacial creep failure of dissimilar metal welded joint between HR3C and T91 heat-resistant steel. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 31, 1068–1074 (2016). https://doi.org/10.1007/s11595-016-1491-8
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DOI: https://doi.org/10.1007/s11595-016-1491-8