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- Title
Tensile Deformation Behavior and Dynamic Recrystallization of TA15 Alloy over a Wide Temperature Range.
- Authors
Shao, Bin; Su, Heng; Tang, Wei; Wan, Shengxiang; Wang, Wenke; Liu, Jiabin; Wang, Jiwei; Zong, Yingying; Shan, Debin
- Abstract
TA15 is a near‐α titanium alloy that is used extensively in the manufacturing of high‐temperature structural components and has important applications in the aerospace field. Herein, the tensile deformation behavior of a TA15 alloy with equiaxed α grains is investigated over a wide temperature range of 25–900 °C. Based on the microstructural observations and tensile testing results, the deformation behavior of the TA15 alloy is classified into four stages: 1) deformation strengthening stage at 25–550 °C; 2) α‐phase softening stage at 600–650 °C; 3) phase transition softening stage at 700–800 °C; and 4) dynamic recrystallization stage at 850–900 °C. The α→β phase transition occurs predominantly between equiaxed α grains, and the increase in β‐phase content results in further enhancement of alloy plasticity. Dynamic recrystallization occurs first at the edge of the equiaxed α grains and gradually extends into the grain interior. The size of the dimples on the fracture surface increases gradually as the temperature increases, and a large shearing and splitting area is observed at 600 °C due to α‐phase softening.
- Subjects
RECRYSTALLIZATION (Metallurgy); PHASE transitions; DEFORMATIONS (Mechanics); ALLOYS; TENSILE tests; TITANIUM alloys
- Publication
Advanced Engineering Materials, 2022, Vol 24, Issue 12, p1
- ISSN
1438-1656
- Publication type
Article
- DOI
10.1002/adem.202200675