Complementary thermodynamic and dilatometric assessment of phase transformation pathway in new β-stabilized TiAl intermetallics

Microstructural and Mechanical Properties of Binary Ti-Rich Fe–Ti, Al-Rich Fe–Al, and Ti–Al Alloys

“…In this case, we also did not note the presence of oxides, pores, or cracks in our samples. The characteristic temperatures of predicted phase transitions only agreed well with the experimentally observed ones at high temperatures [48]. In this study, it was highlighted that the total substitution of Fe by Ti strongly affects the density of the studied alloys.…”

“…Alloy composition and content result in microstructural adjustment and, therefore, improvement of the mechanical properties. Yield and ultimate strengths, Young’s modulus, and creep resistance are drastically enhanced, and the high-temperature limit is also expanded [48]. In this study, we focused on the microstructure and Young’s modulus.…”

Effect of growth rate on microstructure and microhardness of directionally solidified Ti-44Al-5Nb-1.5Cr-1.5Zr-1Mo-0.1B alloy

“…As previously mentioned, Ti-44Al-5Nb-3Cr-1.5Zr alloy prepared by Kartavyk et al [17][18][19][20] using directional solidification exhibits good mechanical properties but has a coarse microstructure and poor high-temperature mechanical properties. Thus, in this study, authors try to refine the microstructure and improve the high-temperature mechanical properties of the Ti-44Al-5Nb-3Cr-1.5Zr alloy by adding Mo, B and adjusting Cr content.…”

“…Additionally, Ti-45Al-8Nb single crystals exhibit excellent high temperature performances: a yield strength of 637 MPa and an elongation of 8.1% at 900 °C. Kartavyk et al [17][18][19][20] has studied the microstructures and mechanical properties of β-stabilized γ-TiAl alloy Ti-44Al-5Nb-3Cr-1.5Zr by directional solidification technique. Results showed the microstructure of the β-stabilized TiAl alloys was refined after directionally solidified and B2 phase that homogeneously distributed between lamellae was decreased in volume.…”

“…Results showed the microstructure of the β-stabilized TiAl alloys was refined after directionally solidified and B2 phase that homogeneously distributed between lamellae was decreased in volume. These improves the mechanical properties of TiAl (Nb, Cr, Zr) alloys and increases their service temperature from 750-800 °C of as-cast one to 900-950 °C of the alloy directionally solidified [17][18][19][20] .…”