AZ91D镁合金高速铣削表面完整性研究  

Surface integrity of AZ91D magnesium alloy in high speed milling

作　　者：张宏基 葛媛媛[1] 

机构地区：[1]榆林学院现代设计与先进制造技术研究中心,陕西榆林719000 [2]西北工业大学机电学院,陕西西安710072

出　　处：《兵器材料科学与工程》2017年第5期29-35,共7页Ordnance Material Science and Engineering

基　　金：陕西省工业科技攻关项目(2016GY-027)

摘　　要：为研究AZ91D镁合金的高速铣削加工工艺对其表面完整性的影响,采用正交实验设计方法对AZ91D镁合金进行高速铣削实验,通过对4种不同的表面粗糙度参数进行评估,综合分析铣削参数对表面形貌的影响规律;利用X射线衍射仪分析表层残余应力,并对热-力耦合作用下的镁合金表面完整性机理进行探究,获得提升AZ91D镁合金加工表面完整性及表面形貌控制的工艺方法。为开展镁合金抗疲劳性能及耐腐蚀、抗氧化性能的研究提供理论指导和实验依据。In order to study the effect of high speed milling technology on the surface integrity of AZ91D magnesium alloy, the orthogonal experimental design method was used in high speed milling experiment for AZ91D magnesium alloy. Through evaluation of the four kinds of different parameters of the surface roughness, the influence of milling parameters on surface topography was analyzed. The surface residual stress was analyzed by using X-ray diffraction, and the magnesium alloy surface integrity mechanism under thermal mechanical coupling was explored. The process which can promote the surface integrity and surface morphology was obtained. The results provide theoretical guidance and experimental basis for the study of fatigue resistance, corrosion resistance and oxidation resistance of magnesium alloys.

关 键 词：AZ91D镁合金 高速铣削 表面完整性 表面形貌 残余应力 

分 类 号：TH162[机械工程—机械制造及自动化]