Oxidation mechanism of a near β-Ti alloy

Wei Chen; Qifeng Li; Libo Zhou; Wei Qiu; Yanjie Ren; Cong Li; Jian Chen; Yongcheng Lin; Kechao Zhou

Materials & Design (Nov 2022)

Oxidation mechanism of a near β-Ti alloy

Wei Chen,
Qifeng Li,
Libo Zhou,
Wei Qiu,
Yanjie Ren,
Cong Li,
Jian Chen,
Yongcheng Lin,
Kechao Zhou

Affiliations

Wei Chen: School of Energy and Power Engineering, Changsha University of Science & Technology, Changsha, Hunan 410114, China; Key Laboratory of Energy Efficiency and Clean Utilization, The Education Department of Hunan Province, Changsha University of Science & Technology, Changsha, Hunan 410114, China; State Key Laboratory of Powder Metallurgy, Central South University, Lu Mountain South Road, Hunan, Changsha 410083, China; Corresponding author at: School of Energy and Power Engineering, Changsha University of Science & Technology, Changsha, Hunan 410114, China.
Qifeng Li: School of Energy and Power Engineering, Changsha University of Science & Technology, Changsha, Hunan 410114, China; Key Laboratory of Energy Efficiency and Clean Utilization, The Education Department of Hunan Province, Changsha University of Science & Technology, Changsha, Hunan 410114, China
Libo Zhou: School of Energy and Power Engineering, Changsha University of Science & Technology, Changsha, Hunan 410114, China; Key Laboratory of Energy Efficiency and Clean Utilization, The Education Department of Hunan Province, Changsha University of Science & Technology, Changsha, Hunan 410114, China
Wei Qiu: School of Energy and Power Engineering, Changsha University of Science & Technology, Changsha, Hunan 410114, China; Key Laboratory of Energy Efficiency and Clean Utilization, The Education Department of Hunan Province, Changsha University of Science & Technology, Changsha, Hunan 410114, China
Yanjie Ren: School of Energy and Power Engineering, Changsha University of Science & Technology, Changsha, Hunan 410114, China; Key Laboratory of Energy Efficiency and Clean Utilization, The Education Department of Hunan Province, Changsha University of Science & Technology, Changsha, Hunan 410114, China
Cong Li: School of Energy and Power Engineering, Changsha University of Science & Technology, Changsha, Hunan 410114, China; Key Laboratory of Energy Efficiency and Clean Utilization, The Education Department of Hunan Province, Changsha University of Science & Technology, Changsha, Hunan 410114, China
Jian Chen: School of Energy and Power Engineering, Changsha University of Science & Technology, Changsha, Hunan 410114, China; Key Laboratory of Energy Efficiency and Clean Utilization, The Education Department of Hunan Province, Changsha University of Science & Technology, Changsha, Hunan 410114, China
Yongcheng Lin: School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
Kechao Zhou: State Key Laboratory of Powder Metallurgy, Central South University, Lu Mountain South Road, Hunan, Changsha 410083, China

Journal volume & issue: Vol. 223
p. 111144

Abstract

Read online

Near β-Ti alloys, a perfect candidate material for numerous applications in the aerospace, are expected to exhibit high temperature endurability. Here, in order to evaluate the high temperature oxidation mechanism of the near β-Ti alloy, detailed microstructural characterization was performed on a near β-Ti alloy, Ti-55511 alloy after isothermal heat treatment at 600 °C in a tube furnace. Parabolic oxidation kinetics was observed. The oxide layer consisted of Al2O3, TiO2, VO2, and Magnéli phases. Polymorphic phase transformations and Magnéli phases played critical roles in the oxide layer thickening. The formation of defects was highly correlated with the incorporation of oxygen into Al2O3 and VO2, which resulted in lattice distortion of the oxides. Continuous oxidation led to the formation of the higher-valence oxide V2O5 in VO2 particles.

Published in Materials & Design

ISSN: 0264-1275 (Print); 1873-4197 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.journals.elsevier.com/materials-and-design

About the journal

Abstract

Keywords