|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Additive Manufacturing: Nano/Micro-mechanics and Length-scale Phenomena
||Quasi-static Mechanical Properties of As-printed Thin Wall Inconel 718 Manufactured with Laser Powder Bed Fusion: Effects of Thickness and Hot Isostatic Pressing
||Paul Paradise, Nikki Van Handel, Samuel Temes, Anushree Saxena, Dhruv Bhate
|On-Site Speaker (Planned)
Applications such as heat exchangers rely on thin metal walls as crucial constituent elements of the structure. The design freedom enabled by additive manufacturing has led to an interest in exploiting this technology to further the performance of these components. However, there is limited data on how and why mechanical properties vary by wall thickness. This work focuses on elucidating the quasistatic tensile properties of as-printed, thin-wall Inconel 718 fabricated using laser powder bed fusion with wall thicknesses ranging from 0.3 – 2.0 mm to help aid in making the necessary design decisions of printing thin-walled structures. Special emphasis is placed on valid estimation of a section area for accurate stress calculations. Statistical analysis is conducted to identify the significance of Hot Isostatic Pressing, porosity, and surface roughness on the size dependency of tensile properties. Comparisons are made to sheet metal specimens to isolate process and microstructure contributions from geometry.
||Additive Manufacturing, Mechanical Properties, Characterization