Cold Forging and Annealing of Wire Arc Additively Manufactured AISI 308LSi Stainless Steel

Abstract:

Wire arc additive manufacturing (WAAM) has gained significant attention in recent years as a cost-effective and efficient method for fabricating complex geometries. This study investigates the effects of cold forging and annealing on mechanical properties of AISI 308LSi wall fabricated using an automatically controlled gas metal arc welding on a CNC machine. The multilayer WAAM wall manufactured at an optimized parameters was first machined to a fairly smooth surface. Thereafter, the wall samples were differently subjected to annealing at 930°C and cold forging processes to improve the mechanical properties. Microstructural characterization of the post-processed and as-deposited samples were performed using optical and scanning electron microscopy while the tensile and hardness properties were investigated using Instron universal testing machine and Vickers hardness tester respectively. Annealing process was found to improve the tensile properties while the cold forging improved hardness of the deposited WAAM wall. These findings offer valuable insights into optimizing post-processing techniques for WAAM parts, especially 308LSi stainless steel and contribute to the advancement of this technology for industrial applications.

• Periodical: Advances in Science and Technology (Volume 154)
• Pages: 41-47
• DOI: https://doi.org/10.4028/p-PYf2ef
• Online since: July 2024
• Authors: Bankong Daniel Bankong*, Oluwafemi Joshua Ogundipe, Taiwo Ebenezer Abioye, Tunde Isaac Ogedengbe, Hussaini Zuhailawati, Taiwo Mike Adamolekun, Amos Babatunde Osasona, Muhammad Hafiz Hassan
• Keywords: Annealing, Forging, Post-Processing

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