There have been concerted world wide efforts to develop steels suitable for use in efficient fossil fired power plants. Ferritic alloys containing between 9 and 12 wt-% chromium are seen as the most promising materials in this respect, especially for thick walled components such as headers and the main steam pipe in boilers. However, the performance of the improved steels has often not been rea...

The basic requirement for the BEPC beam position monitor is the measurement of the beam orbit with 0.1 mm precision near the collision point. To improve the measurement accuracy, the response of the beam position monitor pickups was mapped in the laboratory before they were installed in the BEPC ring. The microcomputer-controlled test set consists of high frequency coaxial switches to select ea...

Background. Now actively used the method of repair with use coupling metal structure. It is to restore carrying capacity active pipelines that are working for a long time.
 The installed on defective area, and undercoupling space sealed filled under pressure self-hardening mass. In this case, stresses in pipe walls aligned each other. parameters filling process determine quality entire req...

I. Samardžić, Faculty of Mechanical Engineering Slavonski Brod, Croatia, A. Ćorić, Bratstvo, Novi Travnik, Bosnia and Herzegovina, M. Dunđer, Department for Polytechnic, University of Rijeka, Croatia. This paper presents the results of weldability investigation on welded joints made of fine grained high-strength S1100QL steel. The investigations are performed on two welded plates by HV 10 hardn...

For the long-term service of X65/Incoloy 825 bimetallic composite pipe girth welds in H 2 S environment, corrosion damage behavior was investigated. Characterizations welded joints were conducted by OM, SEM, XRD, and EDS. The pitting corrosion’s 3D surface morphology NACE-B solution saturated with results show that composition segregation occurs welding process, Laves phase appears between dend...

The prediction of fatigue life of metal welded joints plays an important role at lower manufacturing costs and reduces accidents for engineering materials, the response of metal welded joints to fatigue properties has highly non-linear, so it is difficult to establish an accurate theoretical model using traditional method to predict its fatigue life. It is appropriate to consider modeling metho...