Abstract In this study, we focused on the singular weld residual stress distribution could be seen when we evaluated by X-ray dif fraction method. We used specimens welded under two heat input conditions, and so the weld metal of each specimen had a different solidification structure. In the specimen that had martensite in weld, the weld metal showed a clear difference between the resi dual stresses in longitudinal direction and transverse direction. However, in the specimen that had bainitic-ferrit in wel...
英字タイトル:
Evaluation of residual stress in weld metal by X-ray diffraction method in consideration of the anisotropy of the X-ray elastic constant

Wastage phenomena occur when a heat transfer tube is failed in a Steam Generator (SG) of Fast Breeder Reactor (FBR) and its mechanism is still unexplained. We focused on Liquid Droplet Impingement Erosion (LDIE) as a factor of the wastage phenomena and performed a basic study with a partial mock-up water test simulating a piping group in SG for quantitative evaluation of LDIE. First, we did visualization tests of high pressure and high speed jet into water. The test section consists of a failure heat ...
英字タイトル:
Study on Rapid Wastage due to Liquid Droplet Impingement on Heat Transfer Tube in SG of Fast Breeder Reactor