Enhancing Tool Life of Hot Isostatically Pressed Silicon Nitride Inserts in Machining Inconel 718 with Different Susceptors through Hybrid Microwave Post Sintering
Journal Title: International Journal of engineering Research and Applications - Year 2018, Vol 8, Issue 12
Abstract
Hybrid Microwave sintering has become a growing interest for heating and synthesizing ceramic materials due to its capabilities in successfully enhancing densification and improving mechanical and structural properties. Silicon Nitride (Si3N4) based cutting inserts have outstanding properties for machining hard materials such as cast iron, hard steel and nickel based super alloys. This research aims to analyze the effect of different susceptors on the tool life of various Si3N4 inserts (90Si3N4 4Y2O3 2.5MgO 2Al2O3 1.5SiO) that have been synthesized in machining Inconel 718. The Si3N4 inserts have been synthesized by means of Hot Isostatic Pressing (HIP) at 1800°C and followed by Hybrid Microwave (HMW) post-sintering at 200°C for 10 minutes with the aid of three different susceptors; Silicon Carbide (SiC), Graphite (G) and mixture of (SiC + G) powders. Density, hardness, micro structural properties and tool wear were analyzed. HMW post sintering for only 10 minutes using SiC, G and SiC+G susceptors enhanced the density (97-98%TD) and hardness (27-58%) significantly. Finer uniform grains and less porosities were produced particularly for Si3N4 inserts produced by HMW (SiC+G) when compared with HMW (SiC) and HMW (G). Tool life for the Si3N4 inserts were improved by 10-17% HMW(SiC), 20-53 % HMW(G) and 32-88% HMW(SiC+G) for the cutting speeds of 100, 125 and 160 m/min. Hence, the mixture of SiC +G powders as susceptors produced the best outcome for Si3N4 inserts with enhanced densification, hardness, wear resistance, and longer tool life (88% increment at 100 m/min) when compared with the commercial tool (RNGN 6060) in machining Inconel 718.
Authors and Affiliations
Tasnim Firdaus Ariff, Farah Farhana Zolkapli, Farah Ahmad Sapuan, Ahmad Zahirani Ahmad Azhar, Rubina Bahar, A. N. Mustafizul Karim, A. K. M. Nurul Amin
Keywords
Related Articles
- EP ID EP431467
- DOI 10.9790/9622-0812015156.
- Views 161
- Downloads 0
Simmulation of Rough Rock Joints under Shear Stress
nature that comprises intact rock units separated by discontinuities, e.g. joints, faults and bedding planes. The characteristics of rock joints have major influences on the rock mass behavior and the consequent failure...
Performance Test on Mixed Refrigerant in Domestic Refrigerator
Refrigerator is a household appliance used to preserve the foods, vegetables, beverages at low temperature. Refrigerant is the blood of the refrigerator and it changes its phase to transfer heat for giving cooling effect...
Study of Yamuna River Water and Its Nearby Drinking Water Sources in North Delhi
The Condition of River Yamuna is getting poor day by day in Delhi. Abandoned dhobi Ghats, their Tubs and Kilns Assemble on the boundary of the river and causes major amount of River Pollution. This Study is about Quality...
IOT Patient Health Monitoring System
Monitoring and Recording of various medical parameters of patient outside hospitals has become Widespread phenomenon. The Reason behind this project is to design a system for monitoring the patient’s body at any time usi...
An Interval-Valued Method For Solving Fuzzy Multi-LevelMultiObjective Integer Fractional Programming Problem
This paper presents an interval-valued method to solve fuzzy multi-level multi-objective integer fractional programming problem (F-MMIFP). The problem under consideration involves fuzzy parameters in the objective functi...