17Al12相,未添加稀土Y元素的AZ91堆焊合金的耐磨性能較差；通過添加稀土Y元素,可以減少粗大β相的尺寸和數(shù)量,減小亞表層變形層的厚度以及堆焊合金發(fā)生剝層磨損的程度,提高堆焊合金的耐磨性；稀土Y元素會導致堆焊合金的硬度降低；AZ91堆焊合金的主要磨損機制有三種：磨粒磨損、氧化磨損和剝層磨損"/>

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Y含量對Mg-Al-Zn堆焊合金摩擦磨損性能的影響
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東北大學材料電磁過程研究教育部重點實驗室,東北大學材料科學與工程學院,東北大學材料電磁過程研究教育部重點實驗室,東北大學材料電磁過程研究教育部重點實驗室,東北大學材料電磁過程研究教育部重點實驗室,東北大學材料電磁過程研究教育部重點實驗室

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TG146.2+2

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國家自然科學基金資助(51204053)，教育部項目基本科研業(yè)務費項目國家項目培育種子基金(N150904002)，省科技項目重點實驗室(LZ2015040)


Effects of Yttrium Addition on the Wear Resistance of Surfacing Welding Mg-Al-Zn Alloy
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Key Laboratory of Electromagnetic Processing of Materials,Ministry of Education,Northeastern University,School of Materials Science Engineering,Northeastern University,Key Laboratory of Electromagnetic Processing of Materials,Ministry of Education,Northeastern University,Key Laboratory of Electromagnetic Processing of Materials,Ministry of Education,Northeastern University,Key Laboratory of Electromagnetic Processing of Materials,Ministry of Education,Northeastern University,Key Laboratory of Electromagnetic Processing of Materials,Ministry of Education,Northeastern University

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    摘要:

    堆焊作為一種傳統(tǒng)的表面修復技術(shù),可對鎂合金構(gòu)件表面出現(xiàn)的局部損傷進行有效地修復,提高其性能及使用壽命。研究了Y元素添加及其含量對AZ91焊絲堆焊合金常溫下干滑動摩擦磨損性能及磨損機制的影響。結(jié)果表明：由于存在粗大β-Mg17Al12相,未添加稀土Y元素的AZ91堆焊合金的耐磨性能較差；通過添加稀土Y元素,可以減少粗大β相的尺寸和數(shù)量,減小亞表層變形層的厚度以及堆焊合金發(fā)生剝層磨損的程度,提高堆焊合金的耐磨性；稀土Y元素會導致堆焊合金的硬度降低；AZ91堆焊合金的主要磨損機制有三種：磨粒磨損、氧化磨損和剝層磨損

    Abstract:

    The surfacing welding is the common repairing technology and an effective way for the repair of local damage occurs at the magnesium equipment surfaces. The effects of varying contents of the yttrium on the dry sliding wear behavior of surfacing AZ91 magnesium alloys were investigated in this work. The results demonstrated that the surfacing AZ91 alloy without yttrium addition exhibited poor wear resistance, due to the massive intermetallic β- Mg17Al12 phases. With the addition of yttrium, wear resistance was improved resulting from the decrease of size and quantity of the β phase, which reduced the alloy hardness and decreased the subsurface metal deformation degree caused by friction. Three primary wear mechanisms were observed: abrasion, oxidation and delamination.

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陳慶強,趙志浩,王高松,朱慶豐,陶凱,朱成. Y含量對Mg-Al-Zn堆焊合金摩擦磨損性能的影響[J].稀有金屬材料與工程,2018,47(6):1812~1817.[Chen Qingqiang, Zhao Zhihao, Wang Gaosong, Zhu Qingfeng, Tao Kai, Zhu Cheng. Effects of Yttrium Addition on the Wear Resistance of Surfacing Welding Mg-Al-Zn Alloy[J]. Rare Metal Materials and Engineering,2018,47(6):1812~1817.]
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  • 收稿日期:2017-08-04
  • 最后修改日期:2017-10-25
  • 錄用日期:2017-11-08
  • 在線發(fā)布日期: 2018-09-06
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