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Surface alloying using tungsten disulphide powder mixed in dielectric in micro-EDM on Ti6Al4V
| Content Provider | Scilit |
|---|---|
| Author | Mohanty, Shalini Kumar, Vishnu Tyagi, Rashi Kumar, Shakti Bhushan, Brij Das, Alok Kumar Dixit, Amit Rai |
| Copyright Year | 2018 |
| Description | Journal: Iop Conference Series: Materials Science and Engineering Surface alloying has been popular in recent days for the surface modification of machining components. The present involves the practical application of micro electrical discharge machining (μ-EDM) process with powders mixed in the dielectric fluid for surface alloying applications. The experiments were carried out on Ti6Al4V sheets using tungsten tool with the use of tungsten disulphide $(WS_{2}$) powders suspended in the de-ionised water as the dielectric medium. Sparks occur in between the tool electrode and the work piece gap on the local region, such that melting takes place. It results in the disassociating the dielectric fluid and the powders mixed within it and hence undergo the process of alloying. Design of experiments was used for carrying out the experiments using Taguchi method where the process parameters were taken in L9 array. The desired parametrical settings adopted was voltage, duty factor and concentration of the powder particles. The EDM alloyed samples undergo field emission scanning electron microscope (FESEM) self-equipped with EDS analysis. In addition to that the surface roughness, material removal rate and micro-hardness was measured. The work relates to the use of lubricating powders in the dielectric fluid such that the alloy formed can give some self-lubricating properties. Results showed formation of recast layer (RL) containing traces of $WS_{2}$ substrate over the Ti6Al4V work piece surface hence improving the lubrication characteristics of the alloyed material. |
| Related Links | https://iopscience.iop.org/article/10.1088/1757-899X/377/1/012040/pdf http://iopscience.iop.org/article/10.1088/1757-899X/377/1/012040/pdf |
| ISSN | 17578981 |
| e-ISSN | 1757899X |
| DOI | 10.1088/1757-899x/377/1/012040 |
| Journal | Iop Conference Series: Materials Science and Engineering |
| Issue Number | 1 |
| Volume Number | 377 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2018-06-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Iop Conference Series: Materials Science and Engineering Automotive Engineering Surface Roughness Dielectric Fluid Work Piece Experiments Were Carried |
| Content Type | Text |
| Resource Type | Article |
