By: Bangshidhar Goswami
Ex-Assistant Professor, Department of Metallurgical Engineering, Ran Vijay Singh College of Engineering and Technology, Jamshedpur, East-Singhbhum, Jharkhand, India.
Equal Channel Angular Pressing (ECAP) is a pivotal technique within Severe Plastic Deformation (SPD), widely recognized for its exceptional capability to refine grain structures in metals and alloys down to the micro- and nanometer scales. This review offers an in-depth examination of the ECAP process, highlighting its effectiveness in generating ultra-fine grain microstructures that significantly enhance the mechanical properties of materials, such as strength, hardness, and ductility. We provide a detailed analysis of the critical parameters that influence the outcomes of ECAP, including die geometry, processing temperature, and the number of passes. Each of these factors plays a crucial role in determining the resultant microstructure and overall material performance. The review further delves into recent advancements and innovations in ECAP, such as modifications aimed at improving process efficiency and making the technique more scalable for industrial applications. Despite the notable progress achieved in the field, several challenges persist in transitioning ECAP from laboratory settings to large-scale production environments. These challenges include maintaining process consistency, scaling up without compromising quality, and addressing technical limitations inherent in current methods. This article offers valuable insights into contemporary trends in ECAP technology, evaluates the effectiveness of various processing routes, and explores potential future directions for advancing the development and application of ECAP in metallurgy and materials science. By addressing both the achievements and ongoing issues, this review contributes to a comprehensive understanding of ECAP and its role in the advancement of material processing techniques.
Citation:
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