Research group

Solidification Processes and Complex Structures


Group leader

Assoc. Prof. Dr. Mariana Calin

Phone:  +49 351 4659 613
Email: m.calin(at)ifw-dresden.de

Team

Projects

Publications


 

Ti-matrix composites


Mechanical behavior of porous commercially pure Ti and Ti-TiB composite materials manufactured by selective laser melting

Introduction of porosity into titanium and its alloys is a very effective method for further reducing the Young’s moduli of titanium and its alloys. Porous commercially pure Ti and Ti-TiB composite materials with three different porosity levels (i.e. 10%, 17% and 37%) were produced by selective laser melting (SLM). Their structure and mechanical behavior were systematically characterized.

H. Attar, L. Loeber, A. Funk, M. Calin, L.C. Zhang, K.G. Prashanth, S. Scudino, Y.S. Zhang, J. Eckert, Mater. Sci. Eng. A 625 (2015), 350-356 URL

Selective laser melting of in situ titanium–titanium boride composites: processing, microstructure and mechanical properties

This study presents results of selective laser melting (SLM) processing of in situ Ti–TiB composites from optimally milled Ti–TiB2 powder. Optimized tuning of the SLM manufacturing parameters was applied to obtain almost fully dense (>99.5%) Ti–TiB composites.

H. Attar, M. Bönisch, M. Calin, L.-C. Zhang, S. Scudino, J. Eckert, Acta Materialia (2014), 76, 13-22, URL

Comparative study of microstructures and mechanical properties of in situ Ti–TiB composites produced by selective laser melting, powder metallurgy, and casting technologies

This study discusses and compares the microstructures and mechanical properties of in situ Ti–TiB composites produced by the three different methods. In the present work, Ti–TiB composites were fabricated from milled Ti–5 wt.% TiB2 powders using SLM, casting, and PM techniques. The reaction temperature between starting powders, resultant microstructures, and phase constitutions were studied. Compressive strength, microhardness, and Young’s modulus of the samples were investigated as the objective of this work. This study shows that all processing routes yield Ti–TiB composites that have high potential to be further developed for medical applications.

H. Attar, M. Bönisch, M. Calin, L.-C. Zhang, K. Zhuravleva, A. Funk, S. Scudino, C. Yang, J. Eckert, J. Mater. Res., Vol. 29, No. 17, (2014), 1941-1950, URL