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材料工程  2016, Vol. 44 Issue (3): 15-20    DOI: 10.11868/j.issn.1001-4381.2016.03.003
  材料与工艺 本期目录 | 过刊浏览 | 高级检索 |
表面纳米化-微弧氧化复合涂层对铝合金拉伸性能影响机制研究
文磊1, 王亚明2, 金莹1
1. 北京科技大学国家材料服役安全科学中心, 北京 100083;
2. 哈尔滨工业大学特种陶瓷研究所, 哈尔滨 150080
Influence of SNC-MAO Composite Coating on Tensile Properties of Aluminum Alloy
WEN Lei1, WANG Ya-ming2, JIN Ying1
1. National Center for Materials Service Safety, University of Science and Technology Beijing, Beijing 100083, China;
2. Institute of Advanced Ceramics, Harbin Institute of Technology, Harbin 150080, China
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摘要 通过表面机械研磨处理(SMAT)在LY12CZ铝合金表面制备表面纳米化(SNC)过渡层,再采用微弧氧化(MAO)技术对纳米晶过渡层进行微结构重构,设计制备出纳米化-微弧氧化(SNC-MAO)复合涂层,并对比研究了表面纳米化、微弧氧化及纳米化-微弧氧化复合处理对基体铝合金拉伸性能的影响。结果表明,微弧氧化处理使基体铝合金的屈服强度和抗拉强度减小,而纳米化-微弧氧化复合处理则增加了基体铝合金的屈服强度和抗拉强度。在拉伸伸长率8%的条件下,相同厚度的纳米化-微弧氧化复合涂层比微弧氧化涂层具有更好的抗拉伸破坏能力,表现出更好的膜基结合性能。
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文磊
王亚明
金莹
关键词 铝合金表面纳米化表面机械研磨处理微弧氧化拉伸性能    
Abstract:A duplex process was designed to modify the alloy surface using surface mechanical attrition treatment (SMAT) prior to microarc oxidation (MAO). A surface nanocrystalline (SNC) layer was formed on the surface of Al alloy by SMAT,on which a ceramic coating grew by MAO,finally the SNC-MAO composite coating are fabricated. The tensile properties of the SMATed alloy,MAO coating and SNC-MAO composite coating were comparatively evaluated. Experimental results show that the yield strength and tensile strength of the substrate Al alloy are reduced after MAO treatment,while those of SNC-MAO treated samples are improved due to the introduction of SMAT pre-treatment. When the elongation is 8%,SNC-MAO coating shows better tensile and adhesion properties compared with MAO coating with the same thickness.
Key wordsaluminum alloy    surface nanocrystallization    surface mechanical attrition treatment    microarc oxidation    tensile property
收稿日期: 2015-04-24      出版日期: 2016-03-22
中图分类号:  TG561  
通讯作者: 文磊(1982-),男,助理研究员,博士,研究方向为表面工程,联系地址:北京市海淀区学院路30号北京科技大学项目建设指挥部(100083),E-mail:wenlei@ustb.edu.cn     E-mail: wenlei@ustb.edu.cn
引用本文:   
文磊, 王亚明, 金莹. 表面纳米化-微弧氧化复合涂层对铝合金拉伸性能影响机制研究[J]. 材料工程, 2016, 44(3): 15-20.
WEN Lei, WANG Ya-ming, JIN Ying. Influence of SNC-MAO Composite Coating on Tensile Properties of Aluminum Alloy. Journal of Materials Engineering, 2016, 44(3): 15-20.
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http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.03.003      或      http://jme.biam.ac.cn/CN/Y2016/V44/I3/15
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