The research of deformation field analysis in dual non-equal channel lateral extrusion (DNECLE) processes. To improve the representation of material flow dynamics and texture evolution during deformation, a novel flow line function is introduced. The research focuses on the following key aspects: 1. Flow Line Function Enhancement: We introduce a novel flow line function designed to capture material flow dynamics more accurately. Parameters affecting flow line equations are exhaustively analyzed to ensure effectiveness. The proposed function is integrated into the DNECLE process. 2. Strain Distribution Analysis: investigate strain distribution across the deformed material. Experimental data on Von Mises strain for Aluminum 1100 are collected. Results: 1. Enhanced Descriptive Ability: The new flow function surpasses previous models in describing material flow dynamics. It accurately represents the entire path of material points across the plastic deformation zone. Emerging textures are identified, aiding process control. 2. Uniformity and Localization: Strain distribution analysis reveals uniformity or localization patterns. Experimental results provide insights into material behavior. Practical Implications: Optimizing processing parameters based on accurate flow modeling can tailor material properties. High strength, improved fatigue resistance, and superior formability and achieved. Future Directions: The proposed flow function has broader applications beyond DNECLE. Opportunities exist for related processes, such as chip formation during manufacturing. In summary, this research contributes to understanding material behavior during DNECLE and provides valuable insights for optimizing metal processing technique
