چکیده مقاله
Austenitic stainless steel 316L is extensively employed in industrial applications owing to its superior corrosion resistance and favorable mechanical properties On the other hand, wire and arc additive manufacturing WAAM has emerged as a promising technique for the efficient fabrication of metallic components, particularly medium to large scale parts, due to its high deposition rates and cost effectiveness The fabrication strategy and torch motion pattern play a decisive role in determining the resulting microstructure and mechanical performance This study investigates the fabrication strategy, microstructural evolution, and mechanical properties of 316L thin walls produced via WAAM The walls were manufactured using ER316L welding wire through the inter pulse gas metal arc welding IP GMAW process, employing two distinct strategies with reciprocating torch motion patterns Optimization of welding parameters and modification of the fabrication strategy enabled the successful production of a 25 layer thin steel wall Optical microscopy OM revealed that the microstructure consisted of austenite with ferrite, characterized by skeletal and worm shaped dendrites The dendritic morphology, formed during solidification, was influenced by the chromium to nickel equivalent ratio Creq/Nieq and cooling rate Mechanical characterization was conducted through tensile and microhardness testing The horizontal specimen exhibited higher ductility and tensile strength 446 MPa compared to the vertical specimen 431 MPa The average hardness of the wall was measured at 234 Vickers
کلیدواژهها
نویسندگان
Vahid Ziaei Laleh
PhD student, Sahand University of Technology, Tabriz, Iran
Habib Hamed Zargari
Assistant Professor, Sahand University of Technology, Tabriz, Iran
Jamal Sartibi
Master of Materials Engineering, Sahand University of Technology, Tabriz, Iran
شیوه ارجاع
Ziaei Laleh, Vahid and Zargari, Habib Hamed and Sartibi, Jamal,1404,Investigation of the microstructure and mechanical properties of thin-walled austenitic stainless steel 316L produced via wire arc additive manufacturing,8th International Conference on Welding and Non Destructive Testing & 26th National Conference on Welding & Inspection & 15th National Conference on NDT & 4th National Conference on Additive Manufacturing,Tehran
ارائهشده در
مجموعه مقالات هشتمین کنفرانس بین المللی جوشکاری و آزمایش های غیرمخرب، بیست و ششمین کنفرانس ملی جوش و بازرسی، پانزدهمین کنفرانس ملی آزمایش های غیرمخرب و چهارمین کنفرانس ملی ساخت افزایشی20 بهمن 1404 · تهران