铝/钢连续驱动摩擦焊接头力学性能及金属间化合物形态特征

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英文篇名：Mechanical Properties and Morphology Features of Intermetallic Compounds in Aluminum/Steel Continuous Drive Friction Welded Joints 作者：张昌青 ; 王维杰 ; 刘雄波 ; 金鑫 ; 秦卓 ; 荣琛 英文作者：ZHANG Changqing;WANG Weijie;LIU Xiongbo;JIN Xin;QIN Zhuo;RONG Chen;State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metal, Lanzhou University of Technology; 关键词：连续驱动摩擦焊 ; 异种金属 ; 金属间化合物 ; 低碳钢 ; 铝 英文关键词：continuous drive friction welding;;dissimilar metal;;intermetallic compounds;;low carbon steel;;aluminum 中文刊名：CLDB 英文刊名：Materials Reports 机构：兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室; 出版日期：2019-02-01 11:06 出版单位：材料导报 年：2019 期：v.33 语种：中文; 页：CLDB201916022 页数：6 CN：16 ISSN：50-1078/TB 分类号：113-118

摘要

采用连续驱动摩擦焊对1050工业纯铝和Q235低碳钢进行焊接,分别对接头的拉伸性能、室温冲击强度和弯曲试验进行分析论证,通过SEM、EDS、XRD分析接头界面金属间化合物(IMCs)的形态特征及组成。结果表明:焊接过程中焊接界面不同区域加热功率的差异导致了Fe、Al界面扩散行为的不同,最终导致界面IMCs形态的差异;界面中心区域的IMCs为细小针片状的Fe_3Al,距界面中心1/2R处为棒状的FeAl,距界面中心2/3R处为方棒状的FeAl_3;界面中存在的Fe_3Al和FeAl与其他富铝的IMCs相比具有更好的延展性。
        1050 industrial pure aluminum and Q235 low carbon steel were welded by continuous drive friction welding. The tensile properties of the joints, room temperature impact strength and bending tests were analyzed and demonstrated. The morphology features and composition of IMCs were analyzed by SEM, EDS and XRD. The differences in heating power between different regions of the welding interface during welding led to the differences in the diffusion behavior of Fe and Al at the interface, which led to the differences in the morphology features of IMCs at the interface. The IMCs in central region of the interface are small-needle-shaped Fe_3Al. The IMCs at a distance of 1/2R from the center are rod-shaped FeAl. The IMCs at a distance of 2/3R from the center are square-stick-shaped FeAl_3. Fe_3Al and FeAl in the interface have better ductility than other Al-rich IMCs.

引文

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