Sr、Mg及热处理对Al-Si铝合金焊丝堆焊层耐磨性的影响
Effects of Strontium, Magnesium and Heat Treatment on the Wear Resistance of Surfacing Layer of Al-Si Aluminum Welding Wires
查看参考文献19篇
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文摘
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为了提高4043铝合金焊丝堆焊层的耐磨性,在传统4043铝合金焊丝成分基础上,添加Mg与变质剂Sr,对Al-Si-Mg-Sr合金焊丝焊后堆焊层进行热处理,研究了 Mg、Sr以及热处理工艺对焊丝焊后堆焊层耐磨性的影响。结果表明,在4043铝合金焊丝中添加变质剂Sr可以改变堆焊层组织中共晶硅颗粒的形态;Mg可以为堆焊组织增加强化相Mg_2Si;合理的热处理工艺可以球化共晶硅颗粒,增强共晶硅颗粒与基体的结合能力;三者的共同作用可以显著提高焊丝堆焊层的耐磨性。 |
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其他语种文摘
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In order to improve the wear resistance of surfacing layer of 4043 aluminum welding wires, Mg and Sr were added based on the chemical composition of traditional 4043 aluminum welding wires and the surfacing layer from obtained Al-Si-Mg-Sr welding wires were heat treated. The effects of Mg, Sr and heat treatment on the wear resistance of the surfacing layer were studied. The results show that the morphology of eutectic silicon particles could be changed by Sr and the strengthening phase Mg_2Si appears with the addition of Mg. Meanwhile eutectic silicon particles are spheroidized and their binding ability with the matrix is intensified after the reasonable heat treatment. Therefore, Sr, Mg and heat treatment improve significantly the wear resistance of the surfacing layer together. |
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来源
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稀有金属材料与工程
,2015,44(5):1264-1268 【核心库】
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关键词
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铝合金焊丝
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堆焊
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显微组织
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耐磨性
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焊后热处理
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地址
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1.
东北大学, 材料电磁过程研究教育部重点实验室, 辽宁, 沈阳, 110819
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华晨汽车集团控股有限公司, 辽宁, 沈阳, 110044
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1002-185X |
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学科
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金属学与金属工艺 |
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基金
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中央高校基本科研业务费专项资金
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文献收藏号
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CSCD:5418941
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