@misc{PengEbelPyczaketal., author = {Peng, Xu and Ebel, Thomas and Pyczak, Florian and Willumeit-R{\"o}mer, Regine and Sen, Yu}, title = {Influence of defects on damage tolerance of Metal-Injection-Molded β titanium alloys under static and dynamic loading}, series = {Powder Metallurgy}, volume = {65}, journal = {Powder Metallurgy}, number = {5}, issn = {1743-2901}, doi = {10.1080/00325899.2022.2069077}, pages = {354 -- 364}, abstract = {The β titanium alloys are key materials in lightweight and biomedical applications, due to the combination of excellent biocompatibility and mechanical properties. However, the Binder-based Powder Technologies such as Metal-Injection-Molding (MIM), Binder-Jetting and Fused-Filament-Fabrication, normally introduce three major processing-related defects in the as-sintered Ti-parts: (i) residual porosity, (ii) high impurity level and (iii) coarse-grained structure. The previous studies revealed that these processing defects invariably tend to be even more severe in β titanium alloys than in α/β Ti-6Al-4V alloy, all fabricated by powder metallurgical route. In this work, these processing defects and their likely origins in MIM β titanium alloys are analysed. Furthermore, the influence of these defects on damage tolerance and fracture mechanisms of MIM β titanium alloys under either static or dynamic loading is investigated. Based on the studies, strategic technical improvements in the processing to improve the reliability of MIM β titanium alloys products are proposed.}, language = {en} }