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Si含量及熱處理對Al-Si-Mg鋁合金焊絲堆焊層耐磨性的影響
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遼寧省沈陽市東北大學材料電磁過程教育部重點實驗室

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Fundamental Research Funds for the Central Universities (No. N120309002) and (No. N130709001)


Effects of Si content and aging temperature on the wear resistance property of the surfacing layers welded with 4043 aluminum
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The Key Laboratory of the Ministry of Education of China for Electromagnetic Processing of Materials, Northeastern University

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the National Natural Science Foundation of China (51172147, 50702034); the Shenzhen Science and Technology Research(JC201005280437A)

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    摘要:

    4043鋁合金焊絲熔化后流動性良好，焊后不易產(chǎn)生結(jié)晶裂紋，廣泛適用于6000系鋁合金的焊接。使用4043鋁合金焊絲在材料表面堆焊，可以修復部分材料表面出現(xiàn)劃傷與磨損。本研究中，使用4043鋁合金焊絲，配合鎢極惰性氣體保護焊進行表面堆焊實驗，使用金相顯微鏡，掃描電鏡，硬度測試及耐磨性測試等分析檢測手段研究了Si含量及熱處理工藝對焊后堆焊層耐磨性的影響。結(jié)果表明，提高焊絲中Si含量可以增加共晶硅顆粒的數(shù)量。而熱處理可以有效球化共晶硅顆粒，顯著提高堆焊層的耐磨性。

    Abstract:

    4043 aluminum welding wire has been extensively used for welding 6000 series aluminum alloys due to the good flow ability of the fusion state and low cracking tendency during welding process. Some scratches and wear on the surface of aluminum structural components can be repaired by surface welding with the 4043 aluminum welding wires. In the present study, the influence of Si content and aging temperature on the wear resistance property of the surfacing layers welded by tungsten inert gas (TIG) welding using the 4043 aluminum welding wires has been analyzed by optical microscopy, scanning electron microscopy, hardness testing and abrasive wear testing. The results showed that increase in Si content increased the fraction of eutectic Si particles. The heat treatment spheroidized eutectic Si particles and further improved the wear resistance property of the surfacing layers.

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徐振,趙志浩,韓東月,陳慶強,崔建忠. Si含量及熱處理對Al-Si-Mg鋁合金焊絲堆焊層耐磨性的影響[J].稀有金屬材料與工程,2016,45(1):71~74.[Xu Zhen, Zhao Zhihao, Han Dongyue, Chen Qingqiang, Cui Jianzhong. Effects of Si content and aging temperature on the wear resistance property of the surfacing layers welded with 4043 aluminum[J]. Rare Metal Materials and Engineering,2016,45(1):71~74.]
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  • 收稿日期:2014-06-20
  • 最后修改日期:2014-07-04
  • 錄用日期:2014-08-12
  • 在線發(fā)布日期: 2019-01-04
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