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材料工程  2015 

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, PP. 77-83

Keywords: 热浸镀,扩散退火,Al-Mn系合金,磨粒磨损

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Abstract:

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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