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论文类型：期刊论文

发表时间：2013-08-15

发表刊物：8th Asian-European International Conference on Plasma Surface Engineering (AEPSE)

收录刊物：SCIE、EI、CPCI-S、Scopus

卷号：228

期号：SUPPL.1

页面范围：S460-S465

ISSN号：0257-8972

关键字：Micromachining; EDM; Microstructure of alloy; Thermal property; Heat conduction

摘要：Electrical discharge machining (EDM) is an electro-thermal process. When a micro feature is of the same size order as microstructure of alloy, the machining performance of micro EDM varies due to the difference between the thermal properties of the crystal grain and that of the granular boundary, resulting in undesired dimensions and unstable machining process. To improve the machining accuracy and efficiency of micro EDM, it is necessary to understand the influence of microstructure of alloy on the machining performance of micro EDM. In this study, micro holes were drilled in titanium alloy with equiaxed crystals, copper, nickel, nickel-copper alloy and stainless steel with enlarged grains. Different average values and distribution ranges of material removal rates and discharge gaps indicate that the machining performance of micro EDM is influenced by the microstructure of alloy. (C) 2012 Elsevier B.V. All rights reserved.