Comparative Ways and Means for Production of Nondendritic Microstructures
N. K. Kund

N. K. Kund, Department of Production Engineering, Veer Surendra Sai University of Technology, Burla, Sambalpur (Odisha), India.
Manuscript received on 07 March 2019 | Revised Manuscript received on 20 March 2019 | Manuscript published on 30 March 2019 | PP: 534-537 | Volume-8 Issue-5, March 2019 | Retrieval Number: D3178028419/19©BEIESP
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Abstract: For best casting practices, dendritic microstructure is not preferred as it results in poor mechanical properties. The practices like mechanical stirring, electromagnetic stirring (EM stirring) and cooling slope method (CS method), have demonstrated to be effective in generating nondendritic microstructures. But, the current studies include the micrographs of the samples observed from the semisolid cast billets molded through both EM stirring and CS method. It also encompasses the relative microstructural characteristics like grain size and shape factor of the samples relating to both EM stirring and CS method. It is perceived that the grain size varies from 60 μm to 70 μm, while, the shape factor varies from 0.7 to 0.8. Hence, it is pretty flawless to say that the microstructural characteristics like grain size and shape factor are very much comparable with each other. However, the CS method is the most ideal one on account of simplicity, low equipment together with running/maintenance costs and ease of control/handling, besides, the near net shape components production, and so bears the maximum potential for commercialization in a wide range.
Keyword: EM Stirring, CS Method, Nondendritic Microstructures, Mechanical Stirring.
Scope of the Article: Production Engineering