Abstract
The disbonding mechanism of submerged arc stainless steel strip cladding has been studied. The results reveal that hardened layer has been found in transition zone of the welding joint, and the average thickness of the hardened layer is 25 μm. The hardened layer with higher hardness and lower toughness is lath martensite. Type-II grain boundary and porosity appeared in transition zone and martensite layer, respectively, is the internal cause for disbonding. Numerical simulation results indicate that the residual stress improving with the number of the cladding layers increasing, and the residual stress reach to 380 MPa when cladding six layers. Type-II grain boundary as the crack source expands inducing the disbanding, greater residual stress is the external cause for disbanding.
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This work is supported by Science and Technology Commission of Shanghai Municipality under Grant No. 14DZ2250300, Shanghai, P.R. China.
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Yang, C., Tang, W., Zhang, M. (2017). The Disbonding Mechanism Research of Submerged Arc Stainless Steel Strip Cladding. In: Jiang, H. (eds) Proceedings of The 20th Pacific Basin Nuclear Conference. PBNC 2016. Springer, Singapore. https://doi.org/10.1007/978-981-10-2317-0_41
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DOI: https://doi.org/10.1007/978-981-10-2317-0_41
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