Influence of Tool Rotational Speed on the Mechanical Properties of Friction Stir Welded Al-Cu-Li Alloy
| Autor: | Kyung Ju Min, Ye Rim Lee, Ho Sung Lee |
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| Rok vydání: | 2016 |
| Předmět: |
Heat-affected zone
Materials science Mechanical Engineering Alloy Metallurgy Welding engineering.material Condensed Matter Physics Electric resistance welding law.invention Fusion welding Fracture toughness Mechanics of Materials law engineering Friction stir welding General Materials Science Friction welding Composite material |
| Zdroj: | Materials Science Forum. 857:228-231 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.857.228 |
| Popis: | Aluminum-Lithium alloys have been found to exhibit superior mechanical properties as compared to the conventional aerospace aluminum alloys in terms of high strength, high modulus, low density, good corrosion resistance and fracture toughness at cryogenic temperatures. Even though they do not form low-melting eutectics during fusion welding, there are still problems like porosity, solidification cracking, and loss of lithium. This is why solid state friction stir welding is important in this alloy. It is known that using Al-Cu-Li alloy and friction stir welding to super lightweight external tank for space shuttle, significant weight reduction has been achieved. The objective of this paper is to investigate the effect of friction stir tool rotation speed on mechanical and microstructural properties of Al-Cu-Li alloy. The plates were joined with friction stir welding process using different tool rotation speeds (300-800 rpm) and welding speeds (120-420 mm/min), which are the two prime welding parameters in this process. |
| Databáze: | OpenAIRE |
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