Solidification behavior and dendrite structure refinement after LMD in Ti based alloy reinforced by micron- and nano- alumina

Igor Shishkovsky, Igor Volyanski, Florent Missemer

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

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.

Original languageEnglish
Article number447
JournalOptical and Quantum Electronics
Volume48
Issue number9
DOIs
Publication statusPublished - 1 Sep 2016
Externally publishedYes

Keywords

  • Alumina reinforced titanium matrix composite (ARTMC)
  • Laser metal deposition (LMD)
  • Titanium aluminide

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