Search
Now showing items 21-30 of 38
Evaluation of the residual stresses in the welded joint of the header with a connecting pipe of a steam generator after additional thermomechanical treatment
(2010)
We present the results of numerical evaluation of the possibility of application of additional thermomechanical treatment to the welded joints of the headers with connecting pipes of PGV-1000 steam generators from WWER-1000 ...
Electric pulse current effect on stress-strain state in the notch vicinity in a cantilever beam under cyclic bending
(2010)
Calculation results of the thermal effect assessment induced by electric pulse current on stress variation in the edge notch vicinity in a metal cantilever beam under cyclic bending are presented. The results obtained ...
Analysis of porosity in NiTi SMA's changed by secondary pulse electric current treatment by means of ultra small angle scattering and micro-computed tomography
(2010)
Porous NiTi samples were produced by two different techniques, Mechanical Alloying & Hot Pressing (MA&HP) and Reaction Synthesis (RS), followed by secondary Pulse Electric Current (PEC) treatment. The samples were analyzed ...
Correlation between the corrosion resistance and the hardness scattering of structural metals treated with a pulsed electric current
(2010)
The results of corrosion tests of two kinds of structural metals initially treated by a pulsed electric current of high density are presented. According to the data obtained, the treatment influences the corrosion of metals. ...
Improvement of cyclic fatigue life of metallic materials and welded joints by treatment by pulsed electric current
(2010)
The paper presents experimental data on improvement of cyclic fatigue life of stainless steel and aluminium alloy samples as a result of treatment based on direct passage of electric current through the material, as well ...
Effect of electric current pulse treatment on the corrosion rate and strength of specimens made of 45 steel
(2010)
The paper presents results of static tensile tests of specimens made of 45 steel after holding them for 100 h in a corrosive medium. It has been shown that due to the pretreatment of specimens with electric current pulse ...
Residual stresses relaxation caused by pulsed electric current
(2010)
The results of investigations of the influence of the treatment based on a direct passage of pulsed electric current of high density through the simple parts with a copper-composite joint, coatings and a grinded surface ...
Redistribution of stresses in the header-PGV-1000 steam generator connector weldment under loading after thermal treatment
(2009)
Additional heating of a thickened portion of the steam generator connector during postrepair thermal treatment of the header-connector weldment leads to a decrease in residual tensile stress levels. It is shown that during ...
Effect of pulsed electric current treatment on corrosion of structural metals
(2009)
Results of corrosion tests of structural metals previously treated using pulsed electric current of high density are presented. According to the data obtained, the treatment substantially affects corrosion of metals. In ...