摘要
采用激光合金化工艺在6061铝合金表面制备Al-Fe-Mn-Zn-Si合金化层,以期望提高铝合金表面性能。用扫描电镜(SEM)、X射线衍射仪(XRD)、电子显微硬度计、HSR-2M磨损试验机等材料表征手段分析了合金化层的组织结构与性能,研究结果表明:合金化层的晶相组织由结合区附近的柱状晶向表面的等轴晶过渡,且晶粒大小较基体明显细化,含有金属间化合物AlFe4Si、Al9Si、Mn5Si2以及面心立方的α-Al;激光合金化使铝合金表面硬度由104HV左右提高到了390HV左右;磨损试验结果表明,合金化层提高了铝合金表面的耐磨性。
Laser Al-Fe-Mn-Zn-Si alloying of 6061 Al alloy with laser remelting technology for improvement of its suferace perfomances was investigated. The phase, element distribution, microhardness and the mechanical properties of the alloying layer have been analyzed with the X-ray diffractometer（XRD）, scanning electronic microscope（SEM）, microhardness measurements and the HSR-2M wear tests. The results show that：, the phases of alloyed layer transition from the columnar grains near the area of combination to equiaxed in the surface and the size was significantly refined over the base, the alloying layer consistes of phases of AlFe4 Si,Al9Si,Mn5Si2 and Face-centered cubicα-Al. The microhardness is increased from about 104 HV to about 390 HV; The wear results confirmed that the wear resistance was enhanced.
出处
《激光杂志》
CAS
CSCD
北大核心
2014年第10期124-126,共3页
Laser Journal
基金
重庆市基础与前沿研究计划项目(cstc2013jcyjA50016)
青年科学基金项目(51401039)
关键词
铝合金
激光合金化
组织
性能
Aluminum alloy
Laser alloying
Microstructure
Properties
