J-Integral of interfacial crack between metal-base ceramic coating and steel |
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| Authors: | Lianyong Xu Hongyang Jing Ying He |
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| Institution: | (1) School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, China;(2) Tianjin Key Laboratory of Advanced Joining Technology, Tianjin, 300072, China;(3) Tianjin Internal Combustion Engine Research Institute, Tianjin, 300072, China |
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| Abstract: | The definition of J-integral of interfacial crack was introduced. The three-point bending tests were carried out to obtain the critical loading
values when the interfacial crack initiation occurred between coatings and substrates. The finite element analysis (FEA) was
adopted to analyze the stress distribution in the specimens and compute the J-integral of the interfacial crack between LX88A coating and Chinese Q345 steel. The results showed that the average value
of critical J-integral is 0.70 N/m, which can be taken as the fracture parameter to evaluate the interfacial fracture behavior for the
three-point bending specimens of LX88A coating/Q345 steel system.
Supported by Tianjin Natural Science Foundation (No.08JCYBJC09100), New Teacher Research Fund for the Doctoral Program of
Higher Education of China (No.20070056096) and New Century Outstanding Talented Person Plan of China.
XU Lianyong, born in 1975, male, Dr. |
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| Keywords: | interfacial crack J-integral coating three-point bending test FEA |
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