Results 1 to 10 of about 67,495 (355)
Weld Formation in Laser Hot-Wire Welding of 7075 Aluminum Alloy [PDF]
Metals, 2018 The laser hot-wire welding process was adopted to weld 7075 high-strength aluminum alloy. The influence laws of parameters on the weld formation were analyzed during laser hot-wire welding, and the microstructure characteristics and mechanical properties
Shichun Li, Wei Xu, Gang Xiao, Bing Chen
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Fused Deposition Modeling of Polyamides: Crystallization and Weld Formation. [PDF]
Polymers (Basel), 2020 International newspapers and experts have called 3D printing the industrial revolution of this century. Among all its available variants, the fused deposition modeling (FDM) technique is of greater interest since its application is possible using simple desktop printers.
Costanzo A +4 more
europepmc +6 more sources
Laser arc weak coupling achieves porosity free welding and stable droplet transfer for high nitrogen steel [PDF]
Scientific ReportsTo address the challenge of porosity suppression in laser-arc hybrid welding of high-nitrogen steel, a weakly coupled laser-arc welding method suitable for high-nitrogen steel is proposed.
Fengde Liu, Kai Ning, Xiaojun Liu
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Applied Sciences, 2023 The basic principle of ultrasound is to relate the time of flight of a received echo to the location of a reflector, assuming a known and constant velocity of sound.
Michał K. Kalkowski +5 more
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Nanomodification is an effective methodfor forming the structure of the weld metal. Part II. [PDF]
Нанотехнологии в строительстве, 2020 The short-term existence of the melt in the weld pool and its overheating, a large temperature gradient near the interface and two-dimensional crystallization centers, in the form of fused grains at the weld pool boundary, reduce the probability and rate
Sizintsev Sergey Valerievich +3 more
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Modeling of chemical composition in the melt pool during laser welding of Aluminum / Magnesium alloys [PDF]
E3S Web of Conferences, 2021 Joining dissimilar metals is very difficult due to the formation of brittle intermetallic phases which may be detrimental to mechanical properties. The present work aims to investigate the transport phenomenon in the weld bead and to understand the ...
Ben Halim Sabrine +2 more
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Fault welding by pseudotachylyte formation [PDF]
Geology, 2016 Abstract During earthquakes, melt produced by frictional heating can accumulate on slip surfaces and dramatically weaken faults by melt lubrication. Once seismic slip slows and arrests, the melt cools and solidifies to form pseudotachylytes, the presence of which is commonly used by geologists to infer earthquake slip on exhumed ancient ...
Jörg Renner +6 more
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Sensors, 2023 Abnormal formation of girth weld is a major threat to the safe operation of pipelines, which may lead to serious accidents. Therefore, regular inspection and maintenance of girth weld are essential for accident prevention and energy security.
Rui Li +3 more
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Metals, 2021 In the investigation at hand, sheets of ferritic and pearlitic grey cast iron with spheroidal graphite are welded using a fiber-laser. The influence of varying laser power and welding speed on the macroscopic characteristics of the weld seam and crack ...
Niklas Sommer +3 more
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Interface Formation during Collision Welding of Aluminum [PDF]
Metals, 2020 Collision welding is a high-speed joining technology based on the plastic deformation of at least one of the joining partners. During the process, several phenomena like the formation of a so-called jet and a cloud of particles occur and enable bond formation.
Benedikt Niessen +10 more
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