کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
771252 | 897616 | 2010 | 13 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Characterization of incubation time on creep crack growth for weldments of P92 Characterization of incubation time on creep crack growth for weldments of P92](/preview/png/771252.png)
Most structures are mainly fabricated by welding which are likely to be regions of crack initiation and propagation. In such weldment, it is known that the multi-axial stress fields appear due to the plastic constraint induced by the differences in material micro-structure between the weld metal, heat affected zone (HAZ) and base metal. In the present study, the experiments of creep crack growth tests and the structural mechanical analyses of weldment were conducted to understand the effects of stress multi-axiality of weldment on the characteristics of creep crack growth, creep deformation and creep ductility. Additionally, to characterize the time of creep crack initiation up to the start of a brittle type creep crack growth, the distribution of stress multi-axiality (TF) through the base metal, fine-grain HAZ, coarse-grain HAZ to weld metal were investigated.
Journal: Engineering Fracture Mechanics - Volume 77, Issue 15, October 2010, Pages 3053–3065