Hardness, Wear and Corrosion Properties of Co-Cr-W Alloy Deposited with Laser Engineered Net Shaping in Medical Applications
Ganzi Suresh1, K L Narayana2, M. Kedar Mallik3
1Ganzi Suresh, Department of Mechanical Engineering, Koneru Lakshmaiah Education Foundation, Guntur, India.
2K L Narayana, Department of Mechanical Engineering, Koneru Lakshmaiah Education Foundation, Guntur, India.
3M. Kedar Mallik, Vasireddy Venkatadri Institute of Technology, Namburu, Guntur, India.
Manuscript received on 30 May 2019 | Revised Manuscript received on 07 June 2019 | Manuscript published on 30 June 2019 | PP: 1951-1955 | Volume-8 Issue-8, June 2019 | Retrieval Number: G5717058719/19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Laser Engineered Net Shaping (LENS) is promising metal additive manufacturing process used to build near net shape and functionally graded materials. Co-Cr-W alloy samples are fabricated in order to identify the best suitable process parameters for best performing hardness, wear and corrosion resistance to the LENS deposited samples as per the Taguchi L-9 orthogonal array and analysis is carried through the ANOVA and Grey Relational Grade Analysis (GRGA) method. From the experiments, it is identified that the performance of the samples with reference to the above properties is highly influenced by the process parameters. High laser power (350W), moderate powder feed rate (7.5g/min) and high scan speed (20mm/sec) are the optimized process parameters for best performing samples for all the three properties. Further, it draws from the analysis that the influence of the process parameters for laser power (66%), powder feed rate (22%) and scan speed (6%) on best suitable samples for medical applications.
Keywords: Additive Manufacturing, Laser Engineered Net Shaping (LENS), Co-Cr-W alloy, Medical Implants.
Scope of the Article: Properties and Mechanics of Concrete