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首页> 外文期刊>Arabian Journal for Science and Engineering. Section A, Sciences >Optimization of CNC-WEDM Parameters for AA2024/ZrB2 in situ Stir Cast Composites Using Response Surface Methodology with Desirability Function Technique
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Optimization of CNC-WEDM Parameters for AA2024/ZrB2 in situ Stir Cast Composites Using Response Surface Methodology with Desirability Function Technique

机译：利用响应函数技术，优化AA2024 / ZRB2对原位搅拌铸造复合材料的CNC-WEDM参数

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摘要

In recent years, application of aluminum materials in aircraft structures with output responses likemaximummaterial removal rate and minimal surface roughness is at great necessity. This performance is attained during the wire cut electrical discharge machining and is influenced by the extent of ceramic inclusions in the aluminum matrix. The current research focuses on improving the machining performance of as-prepared aluminum zirconium diboride AA2024-ZrB_2 prepared at different weight ratios of ZrB_2 particles as 0, 2.5, 5, 7.5 and 10 wt%. The as-prepared samples are investigated for different characterizations like phase identification using X-ray diffraction technique; microstructure analysis using both optical microscope and field emission scanning electron microscope; and analysis of mechanical properties using tensile strength and micro-hardness tests. During the machining process, four input parameters like pulse on time T_(on) (μs), pulse off time T_(off) (μs), gap voltage GV (Ⅴ) and ZrB_2 wt% are considered for optimization and obtains 23 μs, 41 μs and GV 100 V at 2.5 wt% ZrB_2. During machining, multi-response optimization, using response surface methodology with desirability function is performed. The output responses as of maximum material removal rate (MRR) of 0.0765 g/min and minimum surface roughness (SR) of 3.618 μm are obtained. The addition of different wt% ZrB_2 in the base matrix has greatly influenced the output response like MRR and SR in the aluminum matrix.
机译：近年来，在航空器结构中使用输出响应的飞机结构的应用似乎XIMUMMUMMUMMUMMUMMENTIAL去除率和最小的表面粗糙度是很好的。在线切割电气放电加工过程中实现了这种性能，受铝基质中陶瓷夹杂物的程度影响。目前的研究侧重于改善在Zrb_2颗粒的不同重量比为0,2.5,5,7.5和10wt％的不同重量比制备的制备铝锆二硼化铝AA2024-ZrB_2的加工性能。使用X射线衍射技术研究了与相位识别相似的不同表征的制备样品;使用光学显微镜和场发射扫描电子显微镜的微观结构分析;利用拉伸强度和微硬度试验分析力学性能。在加工过程中，在时间t_（上）（μs），脉冲关闭时间t_（μs），间隙电压gv（ⅴ）和zrb_2wt％时，四个输入参数，认为优化并获得23μs，在2.5wt％zrb_2的41μs和gv 100v。在加工期间，使用与期望函数的响应表面方法进行多响应优化。获得的输出响应为0.0765g / min，最低表面粗糙度（sr）的最大材料去除率（mRr）为3.618μm。在基础矩阵中添加不同的WT％ZrB_2，极大地影响了铝基中的MRR和Sr等输出响应。

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