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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Joining 6061 aluminum alloy with Al-Si-Cu filler metals
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Joining 6061 aluminum alloy with Al-Si-Cu filler metals

机译：将6061铝合金与Al-Si-Cu填充金属连接

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In this study, brazing of 6061 aluminum alloy was carried out with Al-10.8Si-10Cu and Al-9.6Si-20Cu filler metals at 560 deg C. The addition of 10wt. percent copper into the Al-12Si filler metal lowered the solidus temperature from 586 deg C to 522 deg C, and the liquidus temperature from 592 deg C to 570 deg C. With the addition of 20 wt. percent copper into the Al-12Si filler metal, the liquidus temperature of the filler metals decreased from 592 deg C to 535 deg C. The main microstructures of the two Al-Si-Cu filler metals in the study consisted of Al solid solution, fine silicon particles, and Al_2Cu intermetallic compounds. The shear strengths of the 6061 alloy brazed with Al-12Si at 600 deg C decreased as brazing time increased. The average shear strengths fell from 39 MPa for 10 min to 23 MPa for 60 min of brazing. Joint strengths of the 6061 alloy brazed with Al-10.8Si-10Cu filler metal increased as brazing time increased and reached about 67 MPa at the brazing time of 60 min. Shear strengths of about 40 MPa for the 6061 aluminum joint with Al-9.6Si-20Cu filler metal were obtained irrespective of the brazing periods. The high hardness value of the 6061 aluminum alloy subtract near the butt joint interface after brazing with Al-Si-Cu filler metal could be attributed to the fact that the copper penetrated and formed Al_2Cu intermetallic compounds.
机译：在这项研究中，在560摄氏度下用Al-10.8Si-10Cu和Al-9.6Si-20Cu钎料对6061铝合金进行钎焊。添加10wt。添加到铝12Si填充金属中的铜百分比降低了固相线温度从586℃降低到522℃，液相线温度从592℃降低到570℃。百分比的铜进入Al-12Si填充金属中，填充金属的液相线温度从592℃降低到535℃。研究中的两种Al-Si-Cu填充金属的主要微观结构由精细的Al固溶体组成硅颗粒和Al_2Cu金属间化合物。随着钎焊时间的增加，在600℃下用Al-12Si钎焊的6061合金的剪切强度降低。钎焊的平均剪切强度从10分钟的39 MPa降至60分钟的23 MPa。用Al-10.8Si-10Cu钎料钎焊的6061合金的接头强度随钎焊时间的增加而增加，并在60分钟的钎焊时间达到约67 MPa。与钎焊时间无关，对于6061与Al-9.6Si-20Cu填充金属的铝接头，其抗剪强度约为40 MPa。 6061铝合金的高硬度值在用Al-Si-Cu钎料钎焊后在对接接头界面处减少，这可能是由于铜渗透并形成了Al_2Cu金属间化合物。

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