The aluminium composites are being used for various number of applications like automobiles, aerospace, marine, construction, etc. Manufacturing industries keenly focus on improving their product quality by means of strength with reduction in cost. The hybrid metal matrix composites paved way for achieving those objectives through reinforcement of existing traditional materials. This work is also a novel approach of examining the suitability of aluminium alloy for aerospace and automobile application, by reinforcing with various proportions of Silicon Carbide (SiC) and Graphite (Gr). 5, 10 & 15% of SiC in combination with graphite of 1 & 2% by weight basis. Further the casted composite was explored for its machinability in Wire cut electrical discharge machining (WEDM) process. Voltage and current are the two control parameters chosen for the study with responses material removal rate and Kerf. The MRR is proportional to the production time and Kerf is proportional to dimensional accuracy. A hybrid Taguchi-GRA optimization technique was utilized for identifying optimal parameters for achieving the objective functions. Improved machining performance was shown by the composite containing 15% SiC and 1% Gr over the operating range of 65V and 3A in WEDM process. Finally, the optimized values were justified by using SEM imaging. The agglomeration occurs at 15% SiC addition to base aluminium metal.

中文翻译：

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铝杂化金属基复合材料的电火花加工性能分析与表征

铝复合材料被用于各种应用，例如汽车，航空航天，船舶，建筑等。制造行业热衷于通过提高强度和降低成本来提高产品质量。杂化金属基复合材料为通过加强现有传统材料实现这些目标铺平了道路。通过添加各种比例的碳化硅（SiC）和石墨（Gr）来增强强度，这项工作也是检验铝合金在航空航天和汽车应用中的适用性的一种新颖方法。5、10和15％的SiC，以及1和2％重量比的石墨。进一步研究了铸造复合材料在线切割放电加工（WEDM）过程中的可加工性。电压和电流是为研究选择的两个控制参数，它们与材料去除率和刻尔夫响应有关。MRR与生产时间成正比，Kerf与尺寸精度成正比。混合Taguchi-GRA优化技术用于确定实现目标功能的最佳参数。在WEDM工艺中，在65V和3A的工作范围内，含有15％SiC和1％Gr的复合材料显示出改善的加工性能。最后，通过使用SEM成像证明了最佳值。当向基础铝金属添加15％的SiC时会发生团聚。混合Taguchi-GRA优化技术用于确定实现目标功能的最佳参数。在WEDM工艺中，在65V和3A的工作范围内，含有15％SiC和1％Gr的复合材料显示出改善的加工性能。最后，通过使用SEM成像证明了最佳值。当向基础铝金属添加15％的SiC时会发生团聚。混合Taguchi-GRA优化技术用于确定实现目标功能的最佳参数。在WEDM工艺中，在65V和3A的工作范围内，含有15％SiC和1％Gr的复合材料显示出改善的加工性能。最后，通过使用SEM成像证明了最佳值。当向基础铝金属添加15％的SiC时会发生团聚。