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The chief objective of the purposed project is to study heat treatment process for metal components of turbocharger with To study industrial stress relieving process for metal components (Shaft & Wheel assembly) , To study induction hardening process for metal components (Shaft & Wheel assembly), Testing for strength, Hardness & hardening depth after stress relieve and induction hardening respectively. Research Work concludes- Using Friction Welding dissimilar metal (inconel & Low Alloy Carbon Steel in present case) can be joined within in few seconds without any filler or shielding gasses. Joint with forged quality can be obtained. Stress introduced during friction welding, results in low value of tensile strength of weld joint than required. For present case (Inconel 718 & Low Alloy Carbon Steel), Heat Treatment at about 5500c for 90 minutes is sufficient to retain the tensile strength 350 N/mm2, acceptable for working of turbocharger. Hardening by induction method impart hard surface to the component, whilst improving its fatigue strength. Induction Hardening causes an increase in amount of martensite in steel.