Abstract
The effects of temperature on tensile and the fracture behavior of dissimilar metal welded joint for nuclear safe-end were studied. The results show that the strength, elongation and fracture toughness of DMWJ significantly decrease with increasing temperature. At room temperature, more deformation twins can make the deflection of the crack propagation direction, so the crack propagation path is extended, and the alloy can absorb more energy during the fracture process, so as to the toughness of the joint is enhanced. While at the evaluated temperature, the second phase particles are more likely to be a crack initiation, which makes the crack propagation easier. In addition, the dislocation density is reduced, resulting in the decreased strength.
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Wang, L., Liu, Y., Song, X., Liu, J. (2020). Effects of Temperature on Tensile and Fracture Behavior of Dissimilar Metal Welded Joint for Nuclear Safe-End. In: Gdoutos, E., Konsta-Gdoutos, M. (eds) Proceedings of the Third International Conference on Theoretical, Applied and Experimental Mechanics. ICTAEM 2020. Structural Integrity, vol 16. Springer, Cham. https://doi.org/10.1007/978-3-030-47883-4_7
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DOI: https://doi.org/10.1007/978-3-030-47883-4_7
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