نتایج جستجو برای: welded steel
تعداد نتایج: 86118 فیلتر نتایج به سال:
In this study, microstructural features and mechanical properties of Incoloy 825-316L stainless steel dissimilar joints have been investigated. For this purpose, pulsed gas tungsten arc welding method was employed and 316L, Inconel 82 and Inconel 625 alloys were used as filler metal. First, specimens were cut. Pulsed gas tungsten arc welding was performed using peak and base currents of 220 A a...
The effect of heat input of submerged arc welding process on the corrosion bahavior of weld metal of API X42 gas pipeline steel weld joint was investigated. For this purpose, 6 annealed sheets of 15mm thickness were prepared from the X42 microalloyed steel. Submerged arc welding process with varying heat input of 37.8, 18.9 and 12.6 kJ/mm was used for joint welding. Then potentiodynamic polariz...
The microstructure and micro-texture in different areas of a friction stir (FS)-welded DP600 steel were investigated by means electron backscatter diffraction. volume fraction martensite non-polygonal ferrite was evaluated based on the image quality (IQ) parameter. Analysis grain boundaries revealed that sub-grain as well low-angle heat-affected zone (HAZ) (SZ) more than doubled compared to tho...
In this paper, the numerical implicit gradient approach already validated for steel welded joints is also used aluminium joints. Some peculiarities of are discussed and a general fatigue scatter band arc has been proposed. The analysed experimental data taken from literature range simple butt-welded with thickness 2 mm up to extruded I-beam length about m. obtained SN behaviour an inverse slope...
In this study, microstructural features and mechanical properties of Incoloy 825-316L stainless steel dissimilar joints have been investigated. For this purpose, pulsed gas tungsten arc welding method was employed and 316L, Inconel 82 and Inconel 625 alloys were used as filler metal. First, specimens were cut. Pulsed gas tungsten arc welding was performed using peak and base currents of 220 A a...
The effect of heat input of submerged arc welding process on the corrosion bahavior of weld metal of API X42 gas pipeline steel weld joint was investigated. For this purpose, 6 annealed sheets of 15mm thickness were prepared from the X42 microalloyed steel. Submerged arc welding process with varying heat input of 37.8, 18.9 and 12.6 kJ/mm was used for joint welding. Then potentiodynamic polariz...
the forming limit diagram (fld) is a useful method for characterizing the formability of sheet metals. in this paper, different numerical models were used to investigate the fld of tailor welded blank (twb). twbs were co2 laser-welded samples of interstitial-free (if) steel sheets with different thicknesses. the results of the numerical models were compared with the experimental fld as well as ...
This paper presents a low cycle fatigue life curve by simulating a crack in a cover plate welded moment connection. Initiation of ductile fracture in steel is controlled by growth and coalescence of micro-voids. This research used a numerical method using finite element modeling and simulation of ductile crack initiation by a micromechanical model. Therefore, a finite element model of a cover p...
Abstract This paper presents a study on the performance of circumferentially butt‐welded steel connections under constant tensile‐tensile axial fatigue and cyclic bending tests. The utilizes fibre‐optic based distributed strain sensing to measure strains stresses in regions weld. results confirm desired pure specimen during cycles. suitability monitoring for testing welds is demonstrated. In ad...
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