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http://dx.doi.org/10.3795/KSME-A.2010.34.3.333

Evaluation of Mechanical Properties of Alloy 82/182 Weld Joint Between SA508 Gr.3 Nozzle and F316L Safe-End  

Kim, Jin-Weon (Dept. of Nuclear Engineering, Chosun Univ.)
Lee, Kyung-Soo (Nuclear Power Laboratory, Korea Electric Power Research Institute)
Park, Chi-Yong (Nuclear Power Laboratory, Korea Electric Power Research Institute)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.34, no.3, 2010 , pp. 333-340 More about this Journal
Abstract
This paper presents the distributions of the tensile and fracture properties of an alloy 82/182 dissimilar weld joint between an SA508 Gr.3 nozzle and F316L SS safe-end at ambient temperature. Tensile and J-R tests were conducted using specimens extracted from base metals, heat-affected zones (HAZs), buttering regions, and various regions of the weld metal. The results show that the root region of the weld has higher strength than the upper region. The yield and tensile strengths vary considerably within the root region of the weld. The buttering region had the lowest strengths. The strengths gradually increased as the F316L stainless steel weld boundary was approached. The variation of the strengths within the upper region of the weld is insignificant. The fracture toughness of the alloy 82/182 weld metal is less than those of both the base metals and both HAZs. Within the alloy 82/182 weld, the center of weld has a slightly lower fracture toughness than the weld boundary and buttering region, and the root region has greater toughness than the upper region of the weld.
Keywords
Alloy 82/182(Alloy 82/182); Dissimilar Weld; Mechanical Property; Local Property;
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