45钢表面高能微弧火花数控化沉积AlCoCrFeNi高熵合金  

Numerical control deposition of AlC oC rF eN i high-entropy alloy on 45 steel by high energy micro arc spark

作　　者：王小荣[1,2] 王朝琴[3] 何鹏[2] 林铁松[2] 

机构地区：[1]兰州交通大学机电工程学院,兰州730070 [2]哈尔滨工业大学先进焊接与连接国家重点实验室,哈尔滨150001 [3]兰州交通大学铁道技术学院,兰州730010

出　　处：《焊接学报》2016年第10期73-76,133,共4页Transactions of The China Welding Institution

基　　金：国家自然科学基金资助项目(51465030;51275135)

摘　　要：采用参数化等间距点焊式沉积策略,以高能微弧火花数控化沉积工艺在45钢上制备出了Al Co Cr Fe Ni高熵合金多层涂层.通过SEM和XRD研究了Al Co Cr Fe Ni高熵合金涂层表面形貌及相组成.以层数为变量,研究了电极长度消耗规律和电极/工件质量过渡规律,并通过Bézier曲线拟合出电极长度消耗曲线、阳极质量损失曲线、和阴极质量增加曲线.电极长度消耗规律和质量过渡规律为实现多层连续不间断沉积和涂层显微结构的精确控制奠定基础.高能微弧火花数控化沉积工艺为功能涂层的制备提供了新方法.The AlC oC rF eN i high-entropy alloy coatings( HEAC) were prepared on 45 steel substrate by numerical control high energy micro arc spark deposition process with parametric equidistance spot-welding pattern deposition strategy. The surface morphology and phase composition of the coating were investigated by SEM and XRD. By taking layer number as variable,the consumption law of electrode length and the mass transfer of electrode/substrate were studied. The consumption curve,anode mass loss curve,and cathode mass gain were fitted using Bézier curve. The electrode length consumption law and mass transfer law lay foundations for the continuous deposition and the precise control of the microstructure of multi-layer AlC oC rF eN i HEAC. The numerical control high energy micro arc spark deposition process provides a new coating preparation method for functional coatings.

关 键 词：高能微弧火花数控化沉积 高熵合金 质量过渡 电极消耗 

分 类 号：TG661[金属学及工艺—金属切削加工及机床]