渗铝管合金层组织及性能研究  

Research on Microstructure and Properties of Alloy Layer in Permeated Aluminum Tube

作　　者：岳崇锋[1,2] 江社明[1] 刘秋元[1,3] 杨莹[1] 张启富[1] 

机构地区：[1]钢铁研究总院先进金属材料涂镀国家工程实验室,北京100081 [2]北京科技大学材料科学与工程学院,北京100083 [3]内蒙古科技大学材料与冶金学院,内蒙古包头014010

出　　处：《热加工工艺》2014年第20期115-117,共3页Hot Working Technology

基　　金：国家"十二五"科技支撑计划资助项目(2012BAJ13B03)

摘　　要：为研究渗铝管合金层的组织及性能,利用扫描电镜(SEM)及其配备的能谱仪(EDS),分别对渗铝管合金层的表面、截面组织进行了分析,利用显微硬度测试仪对合金层及基体硬度进行了测试。结果表明:渗铝管内外合金层表面主要为铝、铁以及少量碳元素,呈颗粒状外观;渗铝管合金层与基体之间存在呈锯齿状的分界线,合金层中Al、Fe含量分布较均匀;渗铝管合金层中存在数量较多、尺寸较大的疏松孔洞,尤其是接近表面处,孔洞中Al、Fe元素含量无异常;渗铝管中合金层硬度远大于基体硬度。In order to study the microstructure and properties of alloy layer in permeated aluminum tube, the microstructure of the surface and section of the alloy layer was analyzed with stereo microscope, SEM equipped with EDS analyzer, the hardness of the alloy layer and the substrate was tested by mierohardness tester. The results indicate that inner and outer surfaces of the tubes show a appearance of massive particles, the main surface of the alloy layer containing aluminum, iron and small amounts of carbon; there is existence jagged boundary between the alloy layer and the substrate, the distribution of A1, Fe is uniform in the alloy layer; there is existence of large number of pores in the alloy layer; the hardness of the alloy layer is much greater than the substrate＇s.

关 键 词：渗铝管 合金层 组织 性能 

分 类 号：TG174.443[金属学及工艺—金属表面处理] TG156.8[金属学及工艺—金属学]