About this Abstract |
Meeting |
Advances in Welding and Additive Manufacturing Research 2022
|
Symposium
|
Advances in Welding and Additive Manufacturing Research 2022
|
Presentation Title |
Effect of Hot-wire Assisted Wire Arc Additive Manufacturing on Microstructure and Mechanical Properties |
Author(s) |
xiuhuai sun |
On-Site Speaker (Planned) |
xiuhuai sun |
Abstract Scope |
Wire arc additive manufacturing (WAAM) has attracted extensive attention because it can rapidly manufacture parts. The present study investigates martensitic stainless steel fabricated using hot-wire assisted tungsten inert gas (TIG) WAAM. The results illustrated that the microstructure of the manufactured components by the WAAM method takes martensite + ferrite as the matrix structure. Affected by the subsequent depositing layer, the microstructure of the previous depositing layer degenerates from lath martensite to polygon. The addition of hot wire reduces the micro-hardness difference of manufactured components along the building direction. At the same time, with the increase of hot wire current, the difference of tensile properties of manufactured components in two different orientations of deposition direction and building direction decreases. When the main arc current decreases to 135A and the hot wire current increases to 45A, the two orientations show similar tensile properties and elongation. |
Proceedings Inclusion? |
Undecided |