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Brazeability of the 6061-T6 aluminum alloy with Al-Si-20Cu-based filler metals

机译:6061-T6铝合金与Al-Si-20Cu基钎料的钎焊性能

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摘要

The bond strength of the 6061-T6 aluminum alloy brazed with Al-12Si, Al-9.6Si-20Cu, and Al-7Si-20Cu-2Sn filler metals at a low temperature of 550℃ is evaluated. The fractography of these brazements after tensile tests was observed using scanning electron microscopy (SEM). It was found that joints with good integrity can be produced with Al-7Si-20Cu-2Sn filler metal because it can be used in a temperature range of 504 to 526℃, about 70℃ lower than the traditional Al-12Si filler metal. It was shown that joints of 6061-T6 aluminum alloy as the base metal, when brazed at 550℃ for 60 min using this new filler metal and ward, and after being subjected to a T6 treatment, possessed a high bonding strength of about 121 MPa.
机译:评价了在550℃的低温下钎焊Al-12Si,Al-9.6Si-20Cu和Al-7Si-20Cu-2Sn钎料的6061-T6铝合金的结合强度。使用扫描电子显微镜(SEM)观察了拉伸试验后这些钎焊的断口形貌。研究发现,Al-7Si-20Cu-2Sn填充金属可以生产出具有良好整体性的接头,因为它的使用温度范围为504至526℃,比传统的Al-12Si填充金属低约70℃。结果表明,使用该新型填充金属和病区在550℃钎焊60分钟后,以6061-T6铝合金为母材的接头在经过T6处理后,具有约121 MPa的高结合强度。 。

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