High temperature investigation on EDM process of Al 2618 alloy reinforced with Si3N4, ALN and ZrB2 in-situ composites
High temperature investigation on EDM process of Al 2618 alloy reinforced with Si3N4, ALN and ZrB2 in-situ composites
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DOI：
10.1016/j.jallcom.2015.12.175
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发表时间：
2016-04-05
影响因子：
6.2
通讯作者：
Kumaraswamidhas, L. A.
中科院分区：
文献类型：
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作者：
Kumar, N. Mathan;Kumaran, S. Senthil;Kumaraswamidhas, L. A.
在这项研究中，铝基复合材料(AMC)也牵涉其中。以2618铝合金为母材，配以氮化硅(Si3N4)、氮化铝(AlN)、硼化锆(Zrb(2))等增强相颗粒。它与不同重量百分比的Al 2618合金混合良好。%=0，2，4，6，8)。随着Wt的增加，Al2618复合材料的硬度、拉伸强度、压缩强度等力学性能均有所提高。钢筋的百分比。对高温电火花加工的材料去除速率(MRR)、刀具磨损率(TWR)和加工深度(Mm)进行了优化。加工的输入工艺参数为温度(摄氏度)、脉冲开启(穆S)、脉冲关(穆S)和电流(安培)。利用田口L-25正交表确定了最优工艺参数为MRR、TWR和Depth。用方差分析(ANOVA)计算各参数的贡献率。利用遗传算法(GA)对输入和输出参数进行了精确的检验。(C)2015爱思唯尔B.V.保留所有权利。
In this investigation, Aluminium Matrix Composite (AMC) has implicated in this paper. The Aluminium 2618 alloy is taken as the Matrix material along with Reinforcement particles such as Silicon Nitride (Si3N4), Aluminium Nitride (ALN) and Zirconium Boride (Zrb(2)). It is well mixed with Al 2618 alloy in various weight percentages (Wt. % = 0,2,4,6,8) by stir casting method. The Mechanical properties like hardness, tensile strength, compressive Strength for Al 2618 composites were increased along with increasing Wt. % of reinforcement. A new attempt has been tried to optimize the parameters to obtain minimum value in Material Removal Rate (MRR), Tool Wear Rate (TWR) and Depth (mm) through Electrical Discharge machining process (EDM) at elevated temperatures. The input process parameters are taken for the machining is Temperature (degrees C), Pulse ON (mu S), Pulse OFF (mu S) and Current (Amps). Taguchi L-25 orthogonal array was used to identify the optimize parameter is MRR, TWR and Depth. Each parameters contribution in percentage was calculated by the Analysis of Variance (ANOVA). The exact input and output parameters were examined with help of Genetic Algorithm (GA). (C) 2015 Elsevier B.V. All rights reserved.