EFFECT OF PROCESS PARAMETERS ON THE PERFORMANCE OF POWDER MIXED EDM OF Ni-BASED SUPERALLOYS: A REVIEW

Md Piyar Uddin, John Deb Barma () and Arindam Majumder ()
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Md Piyar Uddin: Mechanical Engineering Department, National Institute of Technology Agartala, Barjala, Jirania 799046, Tripura (W), India
John Deb Barma: Mechanical Engineering Department, National Institute of Technology Agartala, Barjala, Jirania 799046, Tripura (W), India
Arindam Majumder: Mechanical Engineering Department, National Institute of Technology Agartala, Barjala, Jirania 799046, Tripura (W), India

Surface Review and Letters (SRL), 2023, vol. 30, issue 11, 1-17

Abstract: Ni-based superalloys fall under the category of difficulty in machining type material owing to their poor thermal conductivity and high strength at extreme temperatures. Machining such materials using the traditional approach is a tremendously difficult task. On the other hand, EDM, one of the most sophisticated electro-thermal manufacturing processes, is used to machine such materials. It is a well-known non-traditional machining process for generating parts that require accuracy, have complex shapes, and are small in size. However, the use of EDM in Ni-based superalloys has some disadvantages like poor surface finish and low material removal rate. So, to alleviate these disadvantages, researchers introduced powder mixed dielectric fluid in the EDM process. Further, the performance of this technique has been enhanced by studying the effect of various nano/micro-size particles and their concentrations in the dielectric medium. In this paper, the authors have reviewed the impact of non-electrical and electrical process parameters on the output responses when machining Ni-based superalloys using powder mixed EDM. The challenges faced during the conventional machining of Ni-based superalloys and the mechanism proposed for powder mixed EDM, especially under the influence of suspended powders into the dielectric medium have also been presented in this paper. Finally, future research areas of powder mixed EDM of Ni-based Superalloys, such as (i) its modelling and simulation and (ii) the effect of tool motion and powder properties on its performance, are discussed in brief.

Keywords: Non-traditional machining; nickel superalloy; PMEDM; MRR; TWR; Ra (search for similar items in EconPapers)
Date: 2023
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DOI: 10.1142/S0218625X23300113

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