Abstract
The laser metal deposition (LMD) technology with co-axial powder injection was used to fabricate a complex titanium aluminide structure of Ti based alloy reinforced by Al2O3 ceramic of micron and nano size particles. The aim of the study was to demonstrate the possibility of producing TixAly intermetallic phases in remelting powder mixtures with strain-hardening ceramic inclusions in the course of the single-step LMD process. Besides, relationships between the main laser cladding parameters and the intermetallic phase structures of the built-up objects were studied. In our research we applied optical microscopy, X-ray analysis, microhardness measurement and SEM with EDX analysis of the laser-fabricated intermetallics.
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The study was supported by the grant of the Russian Foundation of Basis Researches (RFBR No. 14-29-10193 ofi-m).
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This article is part of the Topical Collection on Fundamentals of Laser Assisted Micro- & Nanotechnologies.
Guest edited by Eugene Avrutin, Vadim Veiko, Tigran Vartanyan and Andrey Belikov.
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Shishkovsky, I., Volyanski, I. & Missemer, F. Solidification behavior and dendrite structure refinement after LMD in Ti based alloy reinforced by micron- and nano- alumina. Opt Quant Electron 48, 447 (2016). https://doi.org/10.1007/s11082-016-0703-y
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DOI: https://doi.org/10.1007/s11082-016-0703-y