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Fracture resistance of flash welded and laser welded butt joints in a microalloyed HSLA steel
(2017-01-01)
High-strength, low-alloy (HSLA) steels are widely used in the automotive and oil industries due to their good mechanical properties and weldability. The selection of the welding process depends on several factors, including ...
Fatigue Crack Growth Investigation on a Maintenance Welding Repair Applied on a High Responsibility Airframe
(Elsevier B.V., 2014-01-01)
Fatigue crack usually initiates at welded joints of structural elements. For a high-responsibility aeronautic component, called Motor-Cradle - critical to the flight safety -, successive weld repairs are carried out toward ...
Pulsed Nd:YAG laser welding of UNS S 32205 duplex stainless steel
(2016-01-01)
This paper reports an experimental study of laser welding on duplex stainless steel UNS S32205 employed in the oil and natural gas industries. A pulsed Nd:YAG laser was used to weld the specimens. Bead on plate condition ...
Effects of laser beam energy on the pulsed Nd:YAG laser welding of thin sheet corrosion resistant materials
(Trans Tech Publications Ltd, 2014-01-01)
The aim of this study was to value the possibility to join, for pulsed Nd:YAG laser welding, thin foils lap joints for sealing components in corrosive environment. Experimental investigations were carried out using a pulsed ...
Comparison between autogenous welding and with addition of nickel on nd:yag pulsed laser welded UNS s32750 duplex stainless steel
(2019-01-01)
Duplex stainless steels (DSS) have a biphasic microstructure with equal proportions of austenite and ferrite, which gives them excellent mechanical strength and corrosion resistance compared to austenitic stainless steels. ...
Comparison of Mechanical and Microstructural Characteristics in Maraging 300 Steel Welded by three Different Processes: LASER, PLASMA and TIG
(2015-01-01)
The maraging steel are considered ultra high strength due to its yield strength greater than 1400 MPa and are part of a set of advanced materials of interest for technological development, mainly for aeronautics and aerospace ...
Effect of post-weld heat treatment on hardness in superduplex stainless steel astm a890/a890m-grade 6a
(2020-01-01)
Superduplex stainless steel alloy exhibit high mechanical and corrosion resistance, which main industrial application is in the petrochemical industry. The manufacture and maintenance of such equipment usually involve ...
Desenvolvimento do processo de soldagem laser pulsado Nd:YAG para lâminas de 100 μm de espessura de AISI 316L
(2010-12-01)
Experimental investigations were carried out using a pulsed neodymium: yttrium aluminum garnet laser welding to examine the influence of the pulse energy in the AISI 316L thin foil welding with 100 μm thickness, employed ...
Effect of corrosion of stainless steel welded within lithium chloride
(2016-01-01)
The difficulties experienced in welding processes of martensitic stainless steel led to development of a new class of them, known as stainless mild martensitic steels. Also, due to the current high demand for energy and ...