Selective laser melting of low-alloyed titanium based alloy with a large solidification range
V.A. Bautin,
V. Yu Zadorozhnyy,
A.A. Korol,
V.E. Bazhenov,
A.S. Shinkarev,
S.V. Chernyshikhin,
D.O. Moskovskikh,
M.E. Samoshina,
A. Khort
Affiliations
V.A. Bautin
National University of Science and Technology MISIS, 119049, Moscow, Russian Federation
V. Yu Zadorozhnyy
National University of Science and Technology MISIS, 119049, Moscow, Russian Federation; Corresponding author. National University of Science and Technology «MISIS», Leninsky Prospect, 4, 119049, Moscow, Russian Federation.
A.A. Korol
National University of Science and Technology MISIS, 119049, Moscow, Russian Federation
V.E. Bazhenov
National University of Science and Technology MISIS, 119049, Moscow, Russian Federation
A.S. Shinkarev
National University of Science and Technology MISIS, 119049, Moscow, Russian Federation
S.V. Chernyshikhin
National University of Science and Technology MISIS, 119049, Moscow, Russian Federation
D.O. Moskovskikh
National University of Science and Technology MISIS, 119049, Moscow, Russian Federation
M.E. Samoshina
National University of Science and Technology MISIS, 119049, Moscow, Russian Federation
A. Khort
KTH Royal Institute of Technology, SE-100 44, Stockholm, Sweden; Corresponding author.
In this work, thermodynamic calculations for α + β Type Ti–Fe–Cu–Sn alloy were carried out by the Thermo-Calc software. Powders from this alloy were obtained by plasma sputtering and used for subsequent 3D printing of experimental samples. The effect of various selective laser melting (SLM) parameters on porosity and hot cracking susceptibility as well as the electrochemical characteristics of the alloy have been studied. The optimal technological regime for the manufacture of samples by the SLM method was determined. It has been established that to obtain relatively dense samples without cracks, regimes with volumetric energy density Ev = 250–300 J/mm3 are required. It has been established that a change in the electrochemical behavior of the Ti94Fe1Cu1Sn4 alloy is related to the formation of a nonequilibrium Ti2Cu phase. Based on the findings we recomended directions for further research.
