KSHITIJ PANDEY
@armiet.in
ASSISTANT PROFESSOR
ALAMURI RATNAMALA INSTITUTE OF ENGINEERING AND TECHNOLOGY
Scopus Publications
Scopus Publications
Kshitij Pandey and Saurav Datta
Elsevier BV
SARTHAK PRASAD SAHOO, KSHITIJ PANDEY, and SAURAV DATTA
Springer Science and Business Media LLC
Kshitij Pandey, Saurav Datta, and Tarapada Roy
Springer Science and Business Media LLC
Kshitij Pandey and Saurav Datta
IGI Global
The present work investigates application feasibility of PVD TiN/TiCN/TiN coated cermet and CVD Al2O3/TiCN coated SiAlON for dry machining of Inconel 825 superalloy. Machining performance is interpreted through cutting force magnitude, tool-tip temperature, and mechanisms of tool wear. Results are compared to that of CVD multi-layer TiN/TiCN/Al2O3/TiN coated WC-Co tool. It is evidenced that SiAlON tool generates lower cutting force but experiences higher tool-tip temperature than other two counterparts. Apart from abrasion and adhesion, carbide tool witnesses coating peeling and ploughing. In contrast, SiAlON tool suffers from inexorable chipping and notching. Wear pattern of cermet tool seems less severe than carbide and SiAlON. Chip's underside surface morphology appears relatively better in case of cermet tool.
Kshitij Pandey, Sarthak Prasad Sahoo, and Saurav Datta
Elsevier BV
Kshitij Pandey and Saurav Datta
Elsevier BV
Kshitij Pandey, Lebbar Md. Abdul Rahman, and Saurav Datta
Elsevier BV
Rashi Tyagi, Kshitij Pandey, Alok Kumar Das, and Amitava Mandal
Informa UK Limited
ABSTRACT In the current investigation, solid-lubricant surfaces were prepared onto the mild steel work piece by means of electrical discharge coating process in electrical discharge machine (EDM). Hexagonal boron nitride (hBN) and copper (Cu) powder-based green compact electrodes, prepared in hot mounting press were used as an EDM tool. The loosely bonded material particles from the compact tool were transported to the mild steel surface. With the change of process parameters (powder mixture ratio, duty factor, and peak current), the variation in surface morphology, micro-hardness and tribological properties of hBN-Cu coating layer has been discussed. Following the investigation, field emission scanning electron microscopic (FESEM) images of coating indicated fewer gaps and pores for the powder lubricant mixing ratio of hBN: Cu/50:50, peak current value of 10 A and duty factor value of 70%. X-ray diffraction plot composed of prominent peaks of BN, Cu, along with Fe2O3 (intermetallic compound). Micro-hardness value of lubricant surfaces drastically reduced to the minimum of 75.76 HV (coating layer) from 180 HV (substrate). Moreover, pin on disk tribological test indicated the lubrication effect of hBN particles by revealing a major drop in wear value from 95.75 µm (work piece) to 1.52 µm (coating) and friction coefficient from 0.9 (work piece) to 0.1 (coating).
Rashi Tyagi, Kshitij Pandey, Shalini Mohanty, Shakti Kumar, Alok Kumar Das, and Amitava Mandal
Springer Singapore