313 7075アルミニウム合金FSW継手の腐食に関する研究(関東支部茨城講演会)

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Friction Stir Welding (FSW) is a relatively new technique developed by the Welding Institute (TWI) in U.K. This technique is effective for welding 7xxx aluminum alloys which cannot be welded by a conventional method. The FSW has been widely used in aircraft and railway industries in the last decade. However, the recent researches were mainly focused on the mechanical properties of FSW. As far as we know, there were few reports involving corrosion studies on FSWed aluminum alloys. The purpose of the present study is to evaluate the corrosion properties in a friction stir welded 7075-T6 and 7075-O aluminum alloys through 48 and 1000 hours cyclic corrosion tests. The result indicated that the degree of the corrosion was small in the S.Z zone and B.M, while the advancing side and retreating side of the stir zone was corroded significantly, especially in the shoulder portion.
2005-09-08

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