锰对扩散退火后热浸镀Al-Mn镀层抗磨粒磨损性能的影响

doi:10.11868/j.issn.1001-4381.2015.11.013

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摘要采用SEM,EDS,XRD等方法分析经扩散退火后Al-Mn镀层的组织结构、元素成分及表面形貌。采用动载磨粒磨损试验机研究Al-Mn镀层的抗磨粒磨损性能,并探讨其磨损机理。结果表明:纯铝镀层主要是由Fe₄Al₁₃相和FeAl相组成,铝锰合金镀层表面主要是由MnAl₆,Mn₃Al₁₀,Fe₄Al₁₃相组成;Mn含量接近共晶点的Al-2%(质量分数,下同)Mn试样抗磨粒磨损性能最好;纯Al、Al-2%Mn镀层的磨粒磨损是微观断裂(剥落)机理占主导地位,Al-9%Mn,Al-13%Mn镀层的磨料磨损主要是多次塑变(微观犁皱)引起的。

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	舒冠华
	李新梅
	王攀

关键词 ：热浸镀, 扩散退火, Al-Mn系合金, 磨粒磨损

Abstract：The microstructure, elemental composition and surface morphology of Al-Mn coatings were analyzed by SEM, EDS and XRD after diffusion annealing. Anti-abrasion performance of alloy coating was studied by using dynamic abrasion tester, and then wear mechanism was discussed. The results show that pure aluminum coating is dominated by Fe₄Al₁₃ and FeAl phases. Aluminum-manganese alloy coating surface is dominated by phases including MnAl₆, Mn₃Al₁₀ and Fe₄Al₁₃. The anti-abrasion performance of Al-2%(mass fraction, same as below) Mn sample which manganese content close to the eutectic point is the best. The abrasive wear of pure Al and Al-2%Mn sample is dominated mainly by microscopic fracture mechanism(spalling), the abrasive wear of Al-9%Mn and Al-13%Mn sample is mainly caused by repeated plastic deformation(micro-plow).

Key words： hot-dipping diffusion annealing Al-Mn alloy abrasive wear

收稿日期: 2014-05-18 出版日期: 2015-11-26

中图分类号:

TG174

通讯作者: 李新梅(1971-),女,博士,教授,硕士生导师,主要从事金属材料表面改性技术的研究与应用,联系地址:新疆乌鲁木齐市新疆大学机械工程学院(830047),lxmxj2009@126.com E-mail: lxmxj2009@126.com

引用本文:

舒冠华, 李新梅, 王攀. 锰对扩散退火后热浸镀Al-Mn镀层抗磨粒磨损性能的影响[J]. 材料工程, 2015, 43(11): 77-83.
SHU Guan-hua, LI Xin-mei, WANG Pan. Effect of Manganese on Anti-abrasion Performance of Al-Mn Coating Prepared by Hot-dip-aluminizing and Diffusion Annealing. Journal of Materials Engineering, 2015, 43(11): 77-83.

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http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2015.11.013 或 http://jme.biam.ac.cn/CN/Y2015/V43/I11/77

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