Friction stir welding has become important in many areas of production and is increasingly used for joining aluminum components. For long seams, conventional tools with only one pin reach their technical limitations due to low gap bridgeability. When aluminum, the stirred surface layers, such as oxides, lead a decrease static dynamic strength since linear accumulations are formed seam. The aim ...

The intergranular corrosion susceptibility of ferritic stainless-steel weldments is strongly dependent on chromium carbide precipitation phenomena. Hence, stabilization widely used to mitigate the aforementioned precipitation. In contrast, has proved ineffective fully prevent due segregation unreacted during solid-state heat-treatments. To analyze behavior 17 wt.-% stainless steels laser weldin...

Abstract In this paper, the effect of autogenous diode laser beam welding (LBW) and influence post weld heat treatment (PWHT) on microstructural changes mechanical properties dual phase DP1400 high strength steel (HSS) butt welded joint are studied presented. LBW PWHT were performed 1 mm sheet thickness using 3 5 kW systems, respectively. The technology ensures quality joints in HSS facilitate ...

The dissimilar combination of 2.25Cr-1Mo (P22) and modified 9Cr-1Mo (P91) obtained using Gas Tungsten Arc Welding (GTAW) process employing the Ni-based superalloy filler ERNiCr-3 (IN82) ERNiCrMo-3 (IN625) have been investigated for microstructure evolution mechanical properties. butt weld joint was produced single bevel groove geometry. structural integrity welded measured in respect tensile st...

In recent years, ultra-high-strength structural (UHSS) steel in quenched and tempered (Q+T) conditions, for example, S960QL has been found wider application areas such as structures, cranes, trucks due to its extraordinary material properties acceptable weldability. The motivation of the study is investigate unique capabilities electron beam welding (EBW) compared conventional gas metal arc (GM...

Commercially pure titanium Ti Grade 2, 2 mm in thickness, was welded to thick nickel alloy 201 with electron beam welding. Various welding parameters were used create the butt-welded joints. The innovation herein consists of two dissimilar metals that are declared non-weldable. current for 40–70 mA and speeds 20–50 mm/s. In this experiment, we tested offsets beam, which 100–300 μm side 200 side...

This thesis presents a collection of theoretical and experimental investigations into various geometrical aspects of hybrid laser-MIG welding. The work is divided up into four parts; 1. A review of the hybrid laser-MIG welding technique with brief summaries of the three papers which make up the remainder of the thesis. 2. A paper entitled “Fundamental analysis of hybrid laser-MIG welding”. This...

OBJECTIVE To determine the relationship between margin preparation design and resin-composite type on microleakage with or without re-application of surface-penetrating sealant. METHODS Class-I resin-composite restorations were completed for 128 extracted human molars. Half of the margins were beveled, the other half, butt-joint. Half of each group was restored with Filtek-Supreme (FS), the o...

 In this study, high-carbon, chromium alloy steel (100Cr6) having the initial spheroidized microstructure was welded using the rotary friction welding method. The effects of process parameters such as friction time and friction force were experimentally investigated. The friction welded joints were produced of two 100Cr6 steel rods. In order to examine the microstructure and mechanical properti...