• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Arabian Journal for Science and Engineering. Section A, Sciences >Electro-discharge Machining Performance of Ti-6Al-4V Alloy: Studies on Parametric Effect and Phenomenon of Electrode Wear
【24h】

Electro-discharge Machining Performance of Ti-6Al-4V Alloy: Studies on Parametric Effect and Phenomenon of Electrode Wear

机译：Ti-6Al-4V合金的放电加工性能：电极磨损的参数效应和现象研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In the present work, machinability of titanium alloy (Ti-6Al-4V) is examined during electro-discharge machining (EDM). Experiments are conducted by varying peak discharge current and pulse-on duration; the EDM performance is assessed in terms of material removal efficiency, and rate of tool wear. Surface integrity of the machined specimen is evaluated in purview of surface morphology and topographical features including surface roughness, surface crack density, white layer thickness, material migration, phase transformation, residual stress, and microindentation hardness. Effects of input parameters on EDM performance of Ti-6Al-4V are discussed. Phenomenon of tool wear during EDM operation is interpreted with carbide formation at the bottom surface of the tool electrode. Maximum material removal rate (approximate to 2.71) is obtained at (Ip=25A, Ton=200s). Surface roughness of the EDMed specimen varies from 2.26 to 4.08m. The lowest energy input (Ip=6A, Ton=50s) achieves minimum surface roughness (Ra approximate to 2.26m). Microhardness values are found falling in the rage from 355.66 to 418.66 HV which is relatively more than as-received' parent material. White layers obtained in different parametric settings vary from 15.63 to 150m). Higher energy input promotes formation of thicker white layer. Variation of surface crack density is observed within rage 0.000642 to 0.003369m/m2. Significant amount of C, Cu, and O immigration is detected through EDS analysis of the machined surface. EDMed surface along with bottom surface of worn out tool electrode are enriched with hard carbide layers.
机译：在当前的工作中，在放电加工（EDM）期间检查了钛合金（Ti-6Al-4V）的可加工性。通过改变峰值放电电流和脉冲持续时间来进行实验；根据材料去除效率和工具磨损率评估EDM性能。在表面形态和形貌特征的范围内评估了机加工样品的表面完整性，包括表面粗糙度，表面裂纹密度，白层厚度，材料迁移，相变，残余应力和微压痕硬度。讨论了输入参数对Ti-6Al-4V EDM性能的影响。 EDM操作过程中的工具磨损现象可以通过在工具电极底表面形成碳化物来解释。在（Ip = 25A，Ton = 200s）时可获得最大材料去除率（约2.71）。电火花加工样品的表面粗糙度在2.26至4.08m之间变化。最低的能量输入（Ip = 6A，Ton = 50s）实现了最小的表面粗糙度（Ra约为2.26m）。发现显微硬度值从355.66 HV下降到418.66 HV，相对于所接受的母体材料而言要高得多。在不同的参数设置下获得的白色层在15.63至150m之间变化。较高的能量输入促进形成较厚的白色层。观察到的表面裂纹密度在0.000642至0.003369m / m2的范围内变化。通过对加工表面进行EDS分析可以检测到大量的C，Cu和O迁移。 EDM加工的表面以及磨损的工具电极的底面都富含硬质碳化物层。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号