Topic
Shielding gas
About: Shielding gas is a research topic. Over the lifetime, 6697 publications have been published within this topic receiving 58668 citations.
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TL;DR: In this paper, the porosity formation was attributed to the phenomena that the pre-existing pores in the base material were swelled to form bubbles during welding and these bubbles had few chances to escape from the weld molten pool because of the vigorous melt flows and the rapid solidification associated with high welding speeds.
44 citations
TL;DR: In this paper, the characteristics of temperature field have been studied numerically and experimentally for a titanium alloy sheet when welded with an improved gas tungsten arc welding method, in which a trailing spot heat sink is introduced to control the welding stress and distortion.
44 citations
TL;DR: In this article, the authors investigated the welding sequence effect on induced angular distortion using FEM and experiments, and established that the results showed good agreement with experimental results and that welding sequence "from outside to inside" induced less angular distortion compared to "from inside to outside".
44 citations
44 citations
TL;DR: In this paper, the authors present experimental results for CO-sub 2} laser welding of AZ91 for the automotive industry and WE43 for the aerospace industry, and they show that the laser beam may be a favorable machining tool for this material.
Abstract: Magnesium alloys have interesting specific characteristics including the best strength/weight ratio of all commercial alloys and makes it especially interesting for the automobile and aerospace industry. The machining of magnesium alloys requires processes with high energy density and shielding gases that effectively protect the metal from the action of oxygen. Therefore, the laser beam may be a favorable machining tool for this material. In this communication, the authors present experimental results for CO{sub 2} laser welding of AZ91 for the automotive industry and WE43 for the aerospace industry. (orig.)
44 citations