Advanced high strength steel sheet (AHSS) is widely used in the automotive body for weight reduction and improvement of crash performance. In general, weldability formability tends to decline as increases. Hot stamping a technique that achieves both sheet, TS1500MPa class hot stamped applied many vehicle models. On other hand, since joint characteristics spot weld are dominated by melt-solidifi...

J. Cárcel-Carrasco; M. Pascual; M. Pérez-Puig; F. Segovia. ITM-Universitat Politècnica de València (Spain). Camino de vera s/n, 46022 Valencia (Spain). Corresponding author, Email: [email protected] This work compares the weldability of ductile iron when: (I) a root weld is applied with a tungsten inert gas (TIG) process using an Inconel 625 source rod and filler welds are subsequently applie...

Austenite formation and its decomposition control the final microstructure and performance of steel welds. This paper presents an in-situ characterization of austenite formation and its decomposition in both the fusion zone (FZ) and heat-affected zone (HAZ) of an Fe-C-Al-Mn steel using time-resolved X-ray diffraction (TRXRD) with synchrotron radiation. Measurement of X-ray diffraction spectra a...

Friction Stir Welding (FSW) is a relatively new welding technique where metals are joined through mechanical stirring. Due to its numerous advantages over older welding methods, it has been implemented in an increasing number of industries. However, there are remaining challenges to be overcome in FSW. One of the most serious is its reliance on accurate weld parameters. Additionally, faults or ...

The extruded AZ61A magnesium alloy plates of 6 mm thickness were butt welded using friction stir welding (FSW) process. The corrosion behavior of the welds was evaluated by conducting immersion test in NaCl solution at different pH value, immersion time and chloride ion concentrations. An empirical relationship was established incorporating pH value, immersion time and chloride ion concentratio...

Al/Cu dissimilar joining is a key technology for reducing the weight and cost of electrical components. In this study, friction stir lap welding (FSLW) Ni-containing Al alloy to pure Cu was performed, effects addition Ni on weld strength interfacial microstructure were examined. A thin intermetallic compound (IMC) layer observed at interface produced by FSLW. The 3 at.% effectively improved str...

Underwater wet welding is one of the most common repair measures for corroded offshore steel structures. Few studies have been carried out systematically concerned with mechanical properties of such welds, thus current design provisions rely heavily on limited experimental data on welds made underwater and design properties for corresponding welds made in air. This paper presents a series of ex...

The single lap shear test is widely used to measure the strength of dissimilar welds even though such a brings limited understanding intrinsic weld toughness. present study proposes numerical finite element (FE) analysis and experimental characterization joints presenting various microstructures (thickness intermetallic layer (IML) hardness profile). For this purpose, Friction Melt Bonding (FMB...

As the need for duplex stainless steel (DSS) increases, it is necessary to evaluate hydrogen stress cracking (HSC) in dissimilar welded joints (WJs) of DSS and carbon steel. This study aims investigate effect weld microstructure on HSC behaviour gas-tungsten arc welds In situ slow-strain rate testing (SSRT) with charging was conducted transverse WJs, which fractured softened heat-affected zone ...