Topic
Filler metal
About: Filler metal is a research topic. Over the lifetime, 11152 publications have been published within this topic receiving 86590 citations.
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TL;DR: In this article, the influence of welding heat input on the morphology, interface bonding, mechanical properties and fracture modes of welded joints was systematically analyzed, and it was shown that laser-gas tungsten arc welding with filling wire can be used to combine high-performance joints and Mg/steel dissimilar metals during butt assembly.
25 citations
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ARCO1
TL;DR: The use of a larger diameter filler rod for the cover passes with a 300° F. temperature limit between passes and segment welds in intermediate and cover passes of 180° reduces time to complete circumferential girth welds for duplex stainless steel pipe by more than 50 percent.
Abstract: Duplex stainless steel having about 25% chrome, 7% nickel and 3.5% molybdenum content included in its chemical composition is gas tungsten arc welded by a manual procedure wherein a continuous or segmented root pass weld is made with a filler metal rod of a first diameter and plural cover passes are made in segments or continuously using a filler metal rod of a larger diameter. The weld may be cooled by demineralized water between passes to limit the interpass temperature of the weld to about 300° F. or less. The use of a larger diameter filler rod for the cover passes with a 300° F. temperature limit between passes and segment welds in intermediate and cover passes of 180° reduces time to complete circumferential girth welds for duplex stainless steel pipe by more than 50 percent.
25 citations
TL;DR: In this paper, dissimilar 2-mm thickness AA6000 and Ti6Al4V butt joints were produced by shifting an Yb fiber laser beam on the upper surface of the Ti sheet.
25 citations
TL;DR: In this article, the effects of welding speed, weld current and electrode gap on the weld shape and the weld arc voltage in AC TIG welding with oxide fluxes were investigated on an AZ31B magnesium alloy substrate.
Abstract: Magnesium-based alloys are finding extensive applications foreground in aerospace and automotive applications. Weldability of magnesium alloys has recently been investigated with a variety of processes. In this article, the activating flux TIG (ATIG) welding of magnesium alloys with three single-component fluxes (TiO2, Cr2O3 and SiO2) under alternating current (AC) mode was studied. The effects of welding speed, weld current and electrode gap on the weld shape and the weld arc voltage in AC TIG welding with oxide fluxes were investigated on an AZ31B magnesium alloy substrate. The mechanisms of oxide fluxes on the arc shape and the arc voltage on the weld shape are discussed. The result showed that the TiO2 and Cr2O3 increase the weld penetration of AC TIG welding of magnesium with good bead cosmetics. The SiO2 increased the weld penetration with very poor formation of the weld surface. However, the arc voltage decreased with the used of TiO2 flux, and increased with the used of Cr2O3 flux. The mechanism of TiO2 and Cr2O3 fluxes increasing penetration should not accord with the “arc constriction”. It would comply with some potential effects of the flux interacting with the liquid metal of fusion zone.
25 citations
TL;DR: In this article, a multivariate alloying design of a welding joint is used in the Mg to Al welding process, where a Zn−29.5Al−0.5Ti alloy is added as filler metal in gas tungsten arc welding of Mg and Al alloy joint.
25 citations