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Effect of grain refinement on the performance of AZ80 Mg alloys during wear and corrosion
Naik, Gajanan M,Gote, Gopal D.,Narendranath, S,Kumar, S.S. Satheesh Techno-Press 2018 Advances in materials research Vol.7 No.2
Magnesium and its alloys are attracted towards all engineering applications like automotive, marine, aerospace etc. due to its inherent high strength to weight ratio. But, extensive use of Mg alloys is limited to the current scenario because of low wear and corrosion resistance behavior. However, equal channel angular press is one of the severe plastic deformation technique which has been effective method to improve the wear and corrosion resistance by achieving fine grain structure. In this study, the effect of grain refinement on wear and corrosion resistance of AZ80 Mg alloys were investigated. The wear behavior of the coarse and fine-grained Mg alloys was examined through $L_9$ orthogonal array experiments in order to comprehend the wear behavior under varies control parameters. It was shown that ECAPed alloy increased the wear and corrosion resistance of the Mg alloy through the formation of fine grain and uniform distribution of secondary ${\beta}-phase$. Also, the performance of AZ80 Mg alloy for these changeswas discussed through SEM morphology.
Comparative Study of Rapid Ice Investment Casting Vs Rapid Casting Processes of Aluminium Alloy
Rajendra Hodgir,Yash Gopal Mittal,Pushkar Kamble,Gopal Gote,Yogesh Patil,Ashik Kumar Patel,K. P. Karunakaran 한국정밀공학회 2023 International Journal of Precision Engineering and Vol.24 No.5
Rapid casting (RC) is a phrase that refers to a specific casting process technique that reduces total production lead time. The technique for achieving it is Additive Manufacturing (AM) or Rapid Prototyping (RP). AM techniques were employed for RC to create complex shapes and sand a 3D mould from a CAD model. This article aimed to examine the performance of Rapid Ice Investment Casting (RIIC) compared with other RC processes such as Direct Wax Investment Casting (Direct Wax IC), Lost Foam Casting (LFC), Lost PLA Casting (LPC), and Rapid Sand Casting (RSC). This investigation examines the part which has various geometric features. Each casting route's procedure is described in detail; pattern development, slurry preparation and mould making. Comparison of RIIC with other RC processes is studied based on the cast specimen's dimensional accuracy and surface finish. According to the findings, RIIC is preferable in terms of smooth surface finish, whereas Direct Wax IC and LFC are superior in dimensional accuracy. The article also addresses, the shortcomings of RIIC are discussed in this article, as well as proposed methods to overcome them.