Tensile tests at elevated temperatures were performed on the Ti-22Al-24Nb-0.5Mo alloy using an MTS universal testing machine to investigate its hot deformation behavior. The experiments were conducted at temperatures ranging from 875 to 950 ℃ and strain rates of 0.001 to 0.55 s⁻¹. Flow stress-strain curves of the alloy were obtained under these conditions, and the effects of deformation temperature and strain rate on flow stress were analyzed. A fifth-order polynomial was used to model the relationship between strain and various material parameters, achieving a correlation coefficient (R) greater than 0.99. An Arrhenius type constitutive model with strain compensation was established. The calculated results demonstrated a correlation coefficient of 0.994 between the predicted and experimental flow stress values, with an average relative error of 4.24%. This confirms the model’s high accuracy, making it suitable for numerical simulations.

Liye Xie, Xueyan Jiao. Study on Arrhenius Constitutive Model of Ti-22Al-24Nb-0.5Mo Alloy Based on Strain Compensation. Academic Journal of Materials & Chemistry (2025), Vol. 6, Issue 3: 71-78. https://doi.org/10.25236/AJMC.2025.060310.

[1] Li Baoyong. High temperature forming technology and equipment for lightweight structure of Ti-22Al-24Nb-0.5Mo alloy[D]. Harbin Institute of Technology, 2021.

[2] Liu Shishuang, Cao Jingxia, Zhou Yi, et al. Research and prospect of Ti2AlNb alloy[J]. The Chinese Journal of Nonferrous Metals, 2021, 31(11): 3106-3126.

[3] Yang Jianlei, Zeng Ting, Wang Guofeng, et al. High Temperature Deformation Constitutive Equation for Ti-22Al-25Nb Alloy Fabricated by Powder Metallurgy[J]. Hot Working Technology, 2019, 48(04): 43-47.

[4] Du Gang, Cui Linlin, Lei Qiang, et al. Research and Development of Orthorhombic Titanium Aluminide[J]. Materials China, 2018, 37(01): 68-73.

[5] Lin P, He Z, Yuan S, et al. Tensile deformation behavior of Ti-22Al-25Nb alloy at elevated temperatures[J]. Materials Science & amp; Engineering A, 2012, 556617-556624.

[6] Liu Q, Wang Z, Yang H, et al. Hot Deformation Behavior and Processing Maps of Ti-6554 Alloy for Aviation Key Structural Parts[J]. Metals, 2020, 10(6): 828.

[7] Paturi R M U, Narala R K S. Constitutive flow stress formulation for aeronautic aluminum alloy AA7075-T6 at elevated temperature and model validation using finite element simulation[J]. Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications, 2016, 230(6): 994-1004.

[8] Lin Y, Chen X. A critical review of experimental results and constitutive descriptions for metals and alloys in hot working[J]. Materials & amp; Design, 2011, 32(4): 1733-1759.

[9] Li Jingdan, Li Rongbin, Liang Hongyu. Modification of Constitutive Model of SA508-3 Steel Based on Strain Compensation[J]. Hot Working Technology, 2024, 53(11): 134-137.

[10] Wu Y, Wang D, Liu Z, et al. A unified internal state variable material model for Ti2AlNb-alloy and its applications in hot gas forming[J]. International Journal of Mechanical Sciences, 2019.

[11] Shi Wenpeng, Sun Cenhua, Li Jiajun, et al, 9310 Steel Constitutive Model Optimization Based on Artificial Neural Network Intelligent Algorithm[J]. Journal of Netshape Forming Engineering, 2024, 16(03): 171-180.

[12] Sellars C M, Mctegart W J. On the mechanism of hot deformation[J]. Acta Metallurgica, 1966, 14(9): 1136-1138.

[13] Rare Metals; Reports Outline Rare Metals Study Findings from Central South University (Hot Compression Deformation Behavior of Biomedical Ni-ti Alloy)[J]. Mining & amp; Minerals, 2019,

[14] Xia Yufeng, Jiang Wei, Cheng Qian, et al. Hot deformation behavior of Ti-6Al-4V-0.1Ru alloy during isothermal compression[J]. Transactions of Nonferrous Metals Society of China, 2020, 30 (01): 134-146.

[15] Li H, Mengwei L, Laixin S, et al. Study on hot deformation behavior of homogenized Mg-8.5Gd-4.5Y-0.8Zn-0.4Zr alloy using a combination of strain-compensated Arrhenius constitutive model and finite element simulation method[J]. Journal of Magnesium and Alloys, 2023, 11(3): 1016-1028.

[16] Lu Yupeng, Meng Lingjian, Yin Hongliang, et al. Constitutive Models for Tensile Deformation Behavior of Ti-22Al-25Nb Alloy Sheet at Elevated Temperatures[J]. Rare Metal Materials and Engineering, 2023, 52(03): 785-790.

[17] Zhou Feng, Wang Kelu, Lu Shiqiang, et al. Flow behavior and BP neural network high temperature constitutive model of Ti-22Al-24Nb-0.5Y alloy[J]. Journal of Materials Engineering, 2019, 47(08): 141-146.

[18] He Z, Wang Z, Lin P. A Comparative Study on Arrhenius and Johnson-Cook Constitutive Models for High-Temperature Deformation of Ti2AlNb-Based Alloys[J]. Metals, 2019, 9(2): 13.

[19] Zener C, Hollomon J H. Effect of Strain Rate Upon Plastic Flow of Steel[J]. Journal of Applied Physics, 1944, 15(1): 22-32.

[20] J. D, W. L C, Y. B C, et al. Arrhenius constitutive model of FV520B steel[J]. Metalurgija, 2024, 63(1): 93-96.