采用搅拌摩擦技术制备AA6061/SiC纳米复合材料,并用实验设计方法来确定影响AA6061/SiC复合材料极限拉伸强度的重要因素,包括4种因素,即旋转速度、横向速度、切削深度、搅拌头形状.运用Taguchi方法,得到优化的工艺参数.方差分析表明,旋转速度是最主要的影响因素.统计分析结果表明,采用带螺纹的搅拌头得到的复合材料的极限拉伸强度比采用方型搅拌头的高.搅拌头的旋转速度越快、横向速度越慢,则复合材料的极限拉伸强度越高.
Design of experiment (DOE) was applied to determining the most important factors which influence ultimate tensile strength (UTS) of AA6061/SiC nanocomposites produced by friction stir processing (FSP).Effect of four factors,including rotational speed,transverse speed,tool penetration depth and pin profile,on UTS,was investigated.By Taguchi method,the optimum of process parameters were determined.Analysis of variance shows that the rotational speed is the most influential parameter.The statistical results depict that UTS for threaded pin is larger than that for square pin.Also,the higher the rotational speed and the lower the transverse speed,the higher the UTS.
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