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 paper, the authors introduced the process of friction stir welding (FSW), the microstructure in FSW alloys and the factors influencing weld quality, and the complex factors affecting the properties.
Abstract: Friction stir welding (FSW), a new solid-state welding technology invited in the early 1990s, enables us weld aluminum alloys and titanium alloys etc. The processing of FSW, the microstructure in FSW alloys and the factors influencing weld quality are introduced. The complex factors affecting the properties are researched.
108 citations
TL;DR: In this paper, the microstructure and mechanical properties of AISI 347 austenitic stainless steel/ASTM A335 low alloy steel dissimilar joint were investigated and two filler metals including ER309L and ERNiCr-3 were selected to be used during the gas tungsten arc welding process.
107 citations
Patent•
30 Apr 1998
TL;DR: In this article, an in-process method to repair voids in an aluminum alloy, particularly a friction stir weld in an aluminium alloy, was proposed, which includes the steps of fabricating filler material of the same composition or compatible with the parent material into a plug form to be fitted into the void, positioning the plug in the void and friction stir welding over and through the plug.
Abstract: The present invention provides an in-process method to repair voids in an aluminum alloy, particularly a friction stir weld in an aluminum alloy. For repairing a circular void or an in-process exit hole in a weld, the method includes the steps of fabricating filler material of the same composition or compatible with the parent material into a plug form to be fitted into the void, positioning the plug in the void, and friction stir welding over and through the plug. For repairing a longitudinal void (30), the method includes machining the void area to provide a trough (34) that subsumes the void, fabricating filler metal into a strip form (36) to be fitted into the trough, positioning the strip in the trough, and rewelding the void area by traversing a friction stir welding tool longitudinally through the strip. The method is also applicable for repairing welds made by a fusing welding process or voids in aluminum alloy workpieces themselves.
107 citations