About
Shahrzad Sajjadivand
Postgraduate Researcher
UCD
Shahrzad Sajjadivand is a PhD researcher at I-Form UCD, investigating the relationship between microstructural evolution and final part performance in metal additive manufacturing processes. She is part of the EPSRC-SFI Centre for Doctoral Training in Advanced Metallic Systems programme, which pools metallurgical expertise and resources from universities and research institutes in Dublin, Sheffield, and Manchester to train the next generation of leaders in metallurgy. Shahrzad obtained her BSc in Materials Engineering (Metallurgy) from the University of Tabriz (Iran) in 2018. She received her master's in Materials Science and Nanoengineering at Sabanci University (Turkey) in 2022. Her research interests include advanced manufacturing and metallurgy.
Technical Summary
18Ni(300) maraging steels belong to an exclusive class of ultra-high-strength low-carbon steels. Because of their high strength, toughness, and weldability, they are widely used in the tool/die industry. Using laser-based powder bed fusion additive manufacturing (PBF-LB) instead of conventional processes for producing maraging steel components has become more important due to its ability to produce complex and precise geometries in one step and reduce production costs, waste material, and time. Currently, there are several studies on PBF-LB18Ni(300) maraging steel focused on improving mechanical properties to be in similar levels to conventional ones by optimizing the post-processing heat treatment. There is an optimised post-processing heat treatment for conventionally produced maraging steels, however according to recent studies there is considerable scattering in published data concerning the post-processing heat treatment recommended for PBF-LB 18Ni maraging steel due to the variation in processing conditions. Therefore, developing a novel heat treatment methodology for PBF-LB 18Ni(300) maraging steel is crucial.