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首页> 外文期刊>Journal of Materials Engineering and Performance >The Effect of Premixed Al-Cu Powder on the Stir Zone in Friction Stir Welding of AA3003-H18
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The Effect of Premixed Al-Cu Powder on the Stir Zone in Friction Stir Welding of AA3003-H18

机译：预混铝铜粉对AA3003-H18摩擦搅拌焊接搅拌区的影响

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摘要

In this research, 3-mm-thick AA3003-H18 non-heat-treatable aluminum alloy plates were joined by friction stir welding (FSW). It was performed by adding pure Cu and premixed Cu-Al powders at various rotational speeds of 800, 1000, and 1200 rpm and constant traveling speeds of 100 mm/min. At first, the powder was filled into the gap (0.2 or 0.4 mm) between two aluminum alloy plates, and then the FSW process was performed in two passes. The microstructure, mechanical properties, and formation of intermetallic compounds were investigated in both cases of using pure Cu and premixed Al-Cu powders. The results of using pure Cu and premixed Al-Cu powders were compared in the stir zone at various rotational speeds. The copper particle distribution and formation of Al-Cu intermetallic compounds (Al2Cu and AlCu) in the stir zone were desirable using premixed Al-Cu powder into the gap. The hardness values were significantly increased by formation of Al-Cu intermetallic compounds in the stir zone and it was uniform throughout the stir zone when premixed Al-Cu powder was used. Also, longitudinal tensile strength from the stir zone was higher when premixed Al-Cu powder was used instead of pure Cu powder.
机译：在这项研究中，通过搅拌摩擦焊（FSW）连接了3毫米厚的AA3003-H18不可热处理铝合金板。通过以800、1000和1200 rpm的各种旋转速度和100 mm / min的恒定行进速度添加纯Cu和预混合的Cu-Al粉进行。首先，将粉末填充到两个铝合金板之间的间隙（0.2或0.4 mm）中，然后分两步进行FSW工艺。在使用纯铜和预混合Al-Cu粉末的两种情况下，均研究了显微组织，力学性能和金属间化合物的形成。在不同转速下，在搅拌区比较了使用纯Cu和预混合Al-Cu粉末的结果。使用预混合的Al-Cu粉末到间隙中，在搅拌区中铜颗粒的分布和Al-Cu金属间化合物（Al2Cu和AlCu）的形成是理想的。通过在搅拌区形成Al-Cu金属间化合物，硬度值显着增加，当使用预混合的Al-Cu粉末时，硬度值在整个搅拌区均匀。另外，当使用预混合的Al-Cu粉末代替纯Cu粉末时，来自搅拌区域的纵向拉伸强度更高。

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