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首页> 外文期刊>Journal of Materials Engineering and Performance >Combination Effects of Nocolok Flux with Ni Powder on Properties and Microstructures of Aluminum-Stainless Steel TIG Welding-Brazing Joint
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Combination Effects of Nocolok Flux with Ni Powder on Properties and Microstructures of Aluminum-Stainless Steel TIG Welding-Brazing Joint

机译：Nocolok助熔剂与Ni粉末的结合对铝-不锈钢TIG焊接-钎焊接头的性能和组织的影响

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摘要

A flux consisting of Nocolok and nickel powder was first applied for TIG welding-brazing of aluminum-stainless steel. Results of tensile and impact tests illustrated that a significant improvement in mechanical properties of the butt joint was obtained with the flux, tensile strength increased from 116 to 158 MPa, and impact energy increased from 3.2 to 6.7 J. Investigation results on microstructures of interfaces and seams suggested that Ni addition significantly decreased the thickness of intermetallic compound (IMC) layer on the interfaces, but did not change the phase structure of Al_(13)Fe_4. Furthermore, precipitate phase in the welded seams changed from Al_6Fe to Al_9FeNi, and the quantity of precipitate phases decreased from 12 to 9% approximately. Finally, effect of Ni powder's addition on the joint was analyzed and discussed. The reduction in the thickness of IMC and quantity of precipitate phases are beneficial to joint properties.
机译：首先，将由Nocolok和镍粉组成的焊剂用于铝不锈钢的TIG钎焊。拉伸和冲击试验的结果表明，随着通量的增加，对接接头的机械性能得到了显着改善，抗拉强度从116 MPa增加到158 MPa，冲击能量从3.2 J增加到6.7J。接缝表明，添加Ni可以显着减小界面上的金属间化合物（IMC）层的厚度，但不会改变Al_（13）Fe_4的相结构。此外，焊缝中的析出相从Al_6Fe变为Al_9FeNi，析出相的量从12％降低至约9％。最后，分析和讨论了添加镍粉对接头的影响。 IMC厚度的减少和沉淀相的数量有利于接头性能。

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