Comparing Microstructure and Properties of Ti and Ti-10Mo Alloys Prepared by Selective Laser Melting

Authors:

Maziyar Azadbeh (1); Samira Eslami (1); Mahsa Golchinfard (1); Faezeh Gaffari (1); Herbert Danninger (2); Christian Gierl Mayer (2)

1- Faculty of Materials Engineering, Sahand University of Technology, P.O. Box 51335-1996, Tabriz, Iran

2- Institute of Chemical Technologies and Analytics, Technische Universität Wien, Getreidemarkt 9/164, A-1060 Wien/Vienna, Austria

Abstract:

This study focuses on the influence of adding Molybdenum to Ti on properties, microstructure and presumably formation of beta phase. For this purpose, specimens from plain Ti powder and Ti-10Mo mixed elemental powders, respectively, were fabricated by selective laser melting (SLM) under the same parameters in argon atmosphere. The laser power, scanning speed and hatch distance were 95 W, 600 mm.s-1 and 0.088 mm, respectively. Ti-10Mo alloy was prepared successfully by SLM of elemental powder mix, a few undissolved but uniformly distributed Mo particles remaining. The molten pools are clearly visible in the micrographs of Ti-10Mo, but surprisingly not in Ti. In the as-built state, the UTS of Ti was 637 MPa, and Mo addition caused an increase to approx. 945 MPa and of the hardness to 464 HV30, whereas the elongation of Ti was considerably higher than that of Ti-10Mo, which failed in a brittle manner.

DOI:

https://doi.org/10.59499/EP235765041