Fracture properties and crack tip constraint quantification of 321/690 dissimilar metal girth welded joints by using miniature SENB specimens

Bao Chen; Sun Yongduo; Wu Yuanjun; Wang Kaiqing; Wang Li; He Guangwei

doi:https://doi.org/10.1016/j.net.2020.12.020

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자료유형: 학술저널

저자정보: Bao Chen (Southwest Jiaotong University) Sun Yongduo (Nuclear Power Institute of China) Wu Yuanjun (School of Mechanics and Engineering, Southwest Jiaotong University) Wang Kaiqing (Nuclear Power Institute of China) Wang Li (Nuclear Power Institute of China) He Guangwei (School of Mechanics and Engineering Southwest Jiaotong University)

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제53권 제6호

발행연도: 2021.6

수록면: 1,924 - 1,930 (7page)

DOI: https://doi.org/10.1016/j.net.2020.12.020

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By using miniature SENB specimens, the fracture properties of the materials in the region of weldedmetal, 321 stainless steel heat affected zone, 690 alloy heat affected zone of 321/690 dissimilar metalgirth welded joints were tested. Both the J-resistance curves and critical fracture toughness of the threedifferent materials are affected by the crack size because of the effect of crack tip constraint. Groups ofconstraint corrected J-resistance curves of the three materials are obtained according to J-Q-M approach. The welded metals exhibit the best fracture resistance but the worst fracture resistance is observed in thematerial of 690 alloy heat affected zone.

#321/690 dissimilar metal girth welded joints #Fracture property #Miniature SENB specimens #Crack tip constraint #J-Q-M approach

참고문헌 (27)

참고문헌 신청

H. T. Wang / 2013 / An experimental investigation of local fracture resistance and crack growth paths in a dissimilar metal welded joint / Mater. Des 44:179~189

J. Yang / 2014 / An experimental investigation of in-plane constraint effect on local fracture resistance of a dissimilar metal welded joint / Mater. Des 53:611~619

H. T. Wang / 2013 / Fracture mechanism of a dissimilar metal welded joint in nuclear power plant / Eng. Fail. Anal 28:134~148

J. Yang / 2018 / Fracture mechanism of cracks in the weakest location of dissimilar metal welded joint under the interaction effect of in-plane and outof-plane constraints / Eng. Fract. Mech 192:12~23

K. Fan / 2015 / Local fracture resistance behavior of interface regions in a dissimilar metal welded joint / Eng. Fract. Mech 136:279~291

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