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Showing 1 to 12 of 12 for “"Fusion welding"”.
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Butt fusion welding of polyethylene pipes
The butt fusion process is extensively used in the joining of polyethylene (PE) pipes by the water and gas industries. This welding process although deceptively simple, is rather poorly understood, with much of the initial developments being of a rather empirical nature. The Water Research centre …
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Fusion welding of diboride-carbide ceramic composites
<p>"Plasma and pulsed plasma arc welding (PAW and PPAW) processes were used to fusion weld ZrB<sub>2</sub> containing 20 vol% ZrC. Varying welding parameters resulted in changes in weld pool shape and size, and the size of ZrB<sub>2</sub> grains within the fusion zone. For PAW processes that …
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JOINING OF ULTRA-HIGH TEMPERATURE CERAMICS TO THE SAME AND REFRACTORY METALS VIA FUSION WELDING
… themselves or refractory metals/alloys via fusion welding and the mechanical strength of produced joints. The ceramics studied consisted of compositions within a diboride-carbide-carbide ternary system while metals studied consisted of molybdenum and a molybdenum alloy. SiC-ZrB2-ZrC ceramics …
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Characterisation of metallurgical and mechanical properties of friction stir welded low alloy steels for marine applications
Friction stir welding of steel presents numerous advantages across many industrial sectors compared to conventional fusion welding techniques. However, the fundamental knowledge of the process on steel remains relatively limited, hence industrial uptake of friction stir welding is practically …
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Transient Liquid Phase Diffusion Bonding of Magnesium Alloy (Mg-AZ31) to Titanium Alloy (Ti-6Al-4V)
… thermal expansion hinder the use of traditional fusion welding techniques. Transient liquid phase (TLP) bonding of magnesium alloy Mg-AZ31 and titanium alloy Ti-6Al- 4V was performed and different interlayer types and configurations were used to facilitate joint formation. The joining of these …
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Effects of Welding Parameters On Mechanical Properties of Aa7050 Fsw Joints
<p> Friction Stir Welding (FSW) is a solid state joining process invented in 1991 by The Welding Institute (TWI, Cambridge, UK). The performance of the resultant welded joint in high strength aluminum alloys sets FSW apart from traditional fusion welding. Rapid process development of FSW joints for …
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The mechanical behaviour of polyethylene pipe systems
… injection moulded fittings which are joined by a fusion welding technique and are very often subjected to internal pressures of a fluctuating nature. Several makes of PE pipe systems were therefore obtained and work was undertaken to fully characterise mechanical performance in terms of internal …
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Caracterización del proceso de soldadura por puntos por fricción agitación empleando el análisis de señales vibroacústicas
Welding plays an important role in industrial processes, among the most important of which are electronic arc welding with consumable and non-consumable electrode; solid phase welding (cold welding, by friction, by explosion, by ultrasound, by diffusion, among others); gas welding, etc. Towards the …
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Microstructure and properties of laser beam and gas tungsten arc welded zirconium-2.5niobium
… process applied during manufacturing. Welding causes microstructural changes which can result in unfavorable changes of properties. The aim of the current study is to understand the transformation behavior of zirconium-2.5niobium during welding, the resulting microstructure and the …
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Modelling of friction stir spot welding
Friction stir spot welding (FSSW) is a solid-state welding process which is especially useful for joining precipitation-hardened aluminium alloys that undergo adverse property changes during fusion welding. It also has potential as an effective method for solid-state joining of dissimilar alloys. …
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Transient Liquid Phase Bonding of Titanium-, Iron- and Nickel- Based Alloys
… lifecycle costs. Unfortunately, conventional fusion welding is not very attractive, because Ti reacts very easily with oxygen and nitrogen at high temperatures, Ni-based superalloys show heat affected zone (HAZ) cracking, and stainless steels show intergranular corrosion and knife-line attack. …