Authors:
Vania Rodriguez (Technical University of Denmark, Denmark)
Naiqi Shang (Politecnico di Milano, Italy)
Thomas Dahmen (Asgaard Metals ApS, Denmark)
Venkata Nadimpalli (Technical University of Denmark, Denmark)
Abstract:
Binder jetting (BJ) is an emerging additive manufacturing (AM) technique offering a cost-effective route for producing complex metal parts. Compared to other AM processes, BJ does not involve rapid melting and solidification, minimizing defects and residual stresses. This makes BJ an attractive alternative for AM alloys with low-weldability such as high-carbon steels. This work explores the effect of sintering parameters on the microstructure of D2 cold work tool steel produced via BJ. Overspray powder as a bi-product from the Spray Forming process (SF) was used as a resource efficient alternative feedstock. The effects of sintering parameters on densification, linear shrinkage and microstructural evolution regarding grain size and phase composition were studied. After sintering, a density of 98% and a hardness of 680 HV were obtained. The study also discusses the potential influences of the sintered microstructure on the properties of the steel addressing opportunities for future
DOI:
https://doi.org/10.59499/EP256779530
