Estimation of fracture toughness K IC from Charpy impact test data in T-welded connections repaired by grinding and wet welding
Estimation of fracture toughness K IC from Charpy impact test data in T-welded connections repaired by grinding and wet welding
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DOI：
10.1016/j.engfracmech.2015.12.010
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发表时间：
2016-03
影响因子：
5.4
通讯作者：
G. Terán;S. Capula-Colindres;D. Angeles-Herrera;J. C. Velázquez;M. J. Fernández-Cueto
中科院分区：
文献类型：
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作者：
G. Terán;S. Capula-Colindres;D. Angeles-Herrera;J. C. Velázquez;M. J. Fernández-Cueto
这项工作首次给出了从矩形磨削和湿焊填充的T型焊接接头中提取的Charpy V型缺口(CVN)冲击试验数据的断裂韧性KIC关联式。为了获得KIC值，使用了基于湿法焊道屈服应力(σYS)的方程。估算的KIC值随着水深的增加而减小。这两个特性(低碳钢的孔隙率和显微组织)并没有改善力学性能，如Charpy冲击和KIC值。
This work presents, for the first time, and estimation of fracture toughnessKICcorrelations from Charpy V-notch (CVN) impact test data extracted from T-welded connections repaired with rectangular grinding and filled by wet welding. To obtainKICvalues, equations based on the yield stress (σYS) of the wet welding beads were used. The estimatedKICdata decreased with increasing water depth. These two characteristics (porosity and microstructures for low carbon steels) did not improve the mechanical properties, such as Charpy impact andKICvalues.