Stabilization of Ti5Al11 at Room Temperature in Ternary Ti-Al-Me (Me = Au, Pd, Mn, Pt) Systems | Sciact - CRIS-system of Boreskov Institute of Catalysis

Stabilization of Ti5Al11 at Room Temperature in Ternary Ti-Al-Me (Me = Au, Pd, Mn, Pt) Systems Full article

Journal

Journal of Alloys and Compounds
ISSN: 0925-8388 , E-ISSN: 1873-4669

Output data

Year: 2023, Volume: 944, Article number : 169244, Pages count : 13 DOI: 10.1016/j.jallcom.2023.169244

Tags

Titanium aluminides; X-ray synchrotron radiation diffraction; DFT calculations; Phase stability; Alloying

Authors

Lazurenko D.V. ¹ , Dovzhenko G.D. ^1,2 , Lozanov V.V. ³ , Petrov I.Y. ⁴ , Ogneva T.S. ¹ , Emurlaev K.I. ¹ , Bataev I.A. ¹

Affiliations

1	Novosibirsk State Technical University, Karl Marks av. 20, 630073 Novosibirsk, Russia
2	Synchrotron Radiation Facility SKIF, Boreskov Institute of Catalysis SB RAS, Nikol’sky av., 1, 630559 Kol’tsovo, Russia
3	Institute of Solid State Chemistry and Mechanochemistry SB RAS, Kutateladze 18, 630128 Novosibirsk, Russia
4	Novosibirsk State University, Pirogova str., 1, 630090 Novosibirsk, Russia

Ti5Al11 is known as a high-temperature phase in binary Ti-Al alloys. However, its existence at low temperatures was previously observed in ternary Ti-Al-based systems alloyed with some transition metals. In this study, we systematically evaluated Ti-Al-Me ternary systems (Me = Au, Pd, Mn, or Pt) to determine the influence of transition elements on low-temperature stabilization of Ti5Al11 phase. The temperature ranges in which Ti5Al11 existed in Ti-Al-Me systems were experimentally found using in situ synchrotron X-ray diffraction (SXRD). It was established that addition of Mn and Pt retains Ti5Al11 at room temperature. The obtained data were compared with predictions of density functional theory (DFT). The total energy, volume, and bond length are especially significantly reduced by addition of Mn and Pt. Ti5Al11 compound containing both of these elements is less prone to saturation with Ti upon preserving the lattice tetragonality and suppressing Ti5Al11 → TiAl transformation. These factors finally contribute to the retention of this phase at room temperature.

Lazurenko D.V. , Dovzhenko G.D. , Lozanov V.V. , Petrov I.Y. , Ogneva T.S. , Emurlaev K.I. , Bataev I.A.
Stabilization of Ti5Al11 at Room Temperature in Ternary Ti-Al-Me (Me = Au, Pd, Mn, Pt) Systems
Journal of Alloys and Compounds. 2023. V.944. 169244 :1-13. DOI: 10.1016/j.jallcom.2023.169244 WOS Scopus РИНЦ ANCAN OpenAlex publication_identifier_short.sciact_skif_identifier_type

Submitted:	Dec 1, 2022
Accepted:	Feb 9, 2023
Published online:	Feb 10, 2023
Published print:	May 23, 2023

Web of science:	WOS:000991999700001
Scopus:	2-s2.0-85147911805
Elibrary:	54943726
Chemical Abstracts:	2023:327973
Chemical Abstracts (print):	182:40344
OpenAlex:	W4319939168
publication_identifier.sciact_skif_identifier_type:	1604

DB	Citing
Scopus	2
OpenAlex	2
Elibrary	2
Web of science	2