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Influence of the Friction Stir Welding-Traveling Speed on the Corrosion Properties of Mg-5Al Alloy

机译:摩擦搅拌焊接速度对Mg-5Al合金腐蚀性能的影响

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摘要

A Mg-5Al alloy was processed using the friction stir welding (FSW) technique with traveling speeds ranging from 0 to 80 mm/min. The influence of the FSW-traveling speed on the prepared Mg-5Al alloy was examined using electrochemical and surface analysis techniques. The electrochemical tests revealed that an increasing FSW-traveling speed results in a significant improvement of the corrosion resistance, as characterized by the higher pitting potential and film and charge transfer resistances. The increased corrosion resistance was attributed to the enhanced refinement of the precipitates, grain refinement and increased homogeneity of the microstructure obtained with an increasing FSW-traveling speed.
机译:使用摩擦搅拌焊接(FSW)技术处理Mg-5Al合金,其行驶速度范围为0至80mm / min。 使用电化学和表面分析技术检查FSW-行进速度对制备的Mg-5AL合金的影响。 电化学测试表明,增加的FSW行进速度导致耐腐蚀性的显着改善,其特征在于较高的蚀势和胶片和电荷转移电阻。 提高的耐腐蚀性归因于增强的沉淀物细化,晶粒细化和随着FSW行驶速度的增加而获得的微观结构的均匀性增加。

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