In this research, the 600 MPa acid resistant steel was used as flash butt welding base material, to study effect of different upset allowance on microstructure and mechanical properties joints. The results can be obtained follows: with increase allowance, it has a significant elongation, ferrite content in heat affected zone increases, joint strength first increases then slowly decreases. When ...

The reliability of welded structure can be evaluated through welding residual stress analysis and fatigue strength assessment. In this study, welding residual stresses of multi-pass dissimilar material welded joint between alloy 617 and 12Cr steel were analyzed numerically and experimentally. Fatigue strength was then assessed in the air. Based on results of welding residual stress analysis and...

Abstract Deep rolling is an industrially widely established mechanical surface treatment process for the modification of roughness and fatigue resistance. However, has not been considered as a potential method post welded joints yet. Even, deep increasing strength comparably well-known in case non-welded components. Therefore, effect (hydrostatic mounted tool) diamond burnishing (mechanical to ...

Because of the promising corrosion resistance and load-bearing capacity, titanium-clad (TC) bimetallic steel has gained increasing attention in ocean/coastal civil structural engineering. Due to double-layer nature TC steel, characteristics member’s geometry weld details are considerably different from that conventional members. Even though previous studies have conducted systematical clarifica...

Friction Stir Welding (FSW) is an efficient and effective welding method with good-quality welds. Aluminum Alloy (AA) has been widely used for various automotive needs, including in vehicle manufacturing. AA series 5XXX a type of material manufacturing because it good strength properties even after the joining process. A similar butt joint using FSW was carried out on 5052 5083. The results wer...

During contact flash welding of rails, the metal is heated and continuously cooled in zone thermal influence. Accelerated heating subsequent intensive cooling, implemented by pulsed flashing-off method, lead to formation quenching structures. Subsequently, during operation rails welded joint, this leads cracks brittle destruction. We have investigated possibilities using after avoid structures ...

In welded tubular joints, when the fatigue crack depth is less than 20% of chord wall thickness, the crack growing process is highly affected by weld geometry.&#10 Hence, T-butt solution and weld magnification factor (Mk) are applicable tools for evaluating the crack growth rate in this domain. In this research, the capability of Artificial Neural Network (ANN) for estimating the Mk of weld toe...