Phase transformation and equation of state in Ti-45Al alloy under high pressure

被引：0

作者：

Li, Xi ^{[1
]}

Zhu, Ruixiang ^{[1
]}

Xin, Jinghua ^{[2
]}

Luo, Minsi ^{[1
]}

Shang, Shun -Li ^{[3
]}

Liu, Zi-Kui ^{[3
]}

Yin, Chongshan ^{[1
]}

Funakoshi, Ken-Ichi ^{[4
]}

Dippenaar, Rian Johannes ^{[5
]}

Higo, Yuji ^{[6
]}

Shiro, Ayumi ^{[7
,8
]}

Reid, Mark ^{[5
]}

Shobu, Takahisa ^{[7
]}

Akita, Koichi ^{[9
]}

Zhang, Wei -Bing ^{[1
]}

Liss, Klaus -Dieter ^{[5
]}

机构：

[1] Changsha Univ Sci & Technol, Hunan Prov Key Lab Flexible Elect Mat Genome Engn, Changsha 410004, Peoples R China

[2] MOT, Tianjin Res Inst Water Transport Engn, Safety Energy Conservat & Emergency Technol Res Ct, Tianjin 300000, Peoples R China

[3] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA

[4] Comprehens Res Org Sci & Soc, Neutron Sci & Technol Ctr, Tokai, Ibaraki 3191106, Japan

[5] Univ Wollongong, Sch Mech Mat Mechatron & Biomed Engn, Northfields Ave, Wollongong, NSW 2522, Australia

[6] Japan Synchrotron Radiat Res Inst, SPring 8, Kouto, Hyogo 6795198, Japan

[7] Japan Atom Energy Agcy, Mat Sci Res Ctr, Tokai, Ibaraki 3191195, Japan

[8] Natl Inst Quantum Sci & Technol, Synchrotron Radiat Res Ctr, Sayo, Hyogo 6795148, Japan

[9] Tokyo City Univ, Fac Sci & Engn, Dept Mech Syst Engn, Tokyo, Tokyo 1588557, Japan

来源：

CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY | 2024年 / 84卷

基金：

中国国家自然科学基金;

关键词：

Equation of state; Ti-Al alloys; High-pressure; Synchrotron radiation; GENERALIZED GRADIENT APPROXIMATION; 1ST-PRINCIPLES; TRANSITION; TI;

D O I：

10.1016/j.calphad.2023.102641

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The phase transformations and pressure -volume dependencies of the Ti-45Al alloy with respect to pressure have been investigated by means of in -situ observation using multi anvil -type high-pressure devices and synchrotron radiation. Under hydrostatic compression from 0 to 10.1 GPa, about 2.3 vol % of gamma transforms continuously to alpha 2. Lattice parameters as well as volume fractions of these two phases have been determined as functions of pressure. Bulk moduli estimated using Birch-Murnaghan's equation of state are 146.2 GPa for the gamma phase, 136.7 GPa for the alpha 2 phase, and 145.6 GPa for their two-phase mixture of Ti-45Al alloy. First -principles have also applied to investigate bulk moduli of two single phases, and the deviation between calculations and measurements is discussed and attributed to mainly phase transformation. The present study provides useful insights into thermodynamics of alpha 2 and gamma phases under high pressure.

引用

页数：6

共 24 条

[1]

Appel F, 2011, GAMMA TITANIUM ALUMINIDE ALLOYS: SCIENCE AND TECHNOLOGY, P1, DOI 10.1002/9783527636204

[2] 1ST-PRINCIPLES STUDY OF PHASE-STABILITY OF TI-AL INTERMETALLIC COMPOUNDS [J].

ASTA, M ;

DEFONTAINE, D ;

VANSCHILFGAARDE, M .

JOURNAL OF MATERIALS RESEARCH, 1993, 8 (10) :2554-2568

[3] TiAl alloys in commercial aircraft engines [J].

Bewlay, B. P. ;

Nag, S. ;

Suzuki, A. ;

Weimer, M. J. .

MATERIALS AT HIGH TEMPERATURES, 2016, 33 (4-5) :549-559

[4] ELASTICITY AND CONSTITUTION OF THE EARTH INTERIOR [J].

BIRCH, F .

JOURNAL OF GEOPHYSICAL RESEARCH, 1952, 57 (02) :227-286

[5] Shock Hugoniot and Mie-Gruneisen EOS of TiAl alloy: A molecular dynamics approach [J].

Chen, Jinsong ;

Chen, Wenjun ;

Chen, Shouan ;

Zhou, Guiyu ;

Zhang, Tong .

COMPUTATIONAL MATERIALS SCIENCE, 2020, 174

[6] Phase transformations in high niobium and carbon containing γ-TiAl based alloys [J].

Chladil, H. F. ;

Clemens, H. ;

Leitner, H. ;

Bartels, A. ;

Gerling, R. ;

Schimansky, F. -P. ;

Kremmer, S. .

INTERMETALLICS, 2006, 14 (10-11) :1194-1198

[7]

Dubrovinskaia N.A., 2000, Phys. Rev. B, V63

[8]

Dwivedi A., 2010, Mechanical Response of Titanium Aluminide (TiAl3)

[9] First-principles calculation of structural energetics of Al-TM (TM = Ti, Zr, Hf) intermetallics [J].

Ghosh, G ;

Asta, M .

ACTA MATERIALIA, 2005, 53 (11) :3225-3252

[10] A large-volume high-pressure and high-temperature apparatus for in situ X-ray observation, 'SPEED-Mk.II' [J].

Katsura, T ;

Funakoshi, K ;

Kubo, A ;

Nishiyama, N ;

Tange, Y ;

Sueda, Y ;

Kubo, T ;

Utsumi, W .

PHYSICS OF THE EARTH AND PLANETARY INTERIORS, 2004, 143 :497-506

← 1 2 3 →